./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:53:40,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:53:40,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:53:40,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:53:40,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:53:40,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:53:40,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:53:40,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:53:40,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:53:40,381 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:53:40,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:53:40,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:53:40,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:53:40,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:53:40,384 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:53:40,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:53:40,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:53:40,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:53:40,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:53:40,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:53:40,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:53:40,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:53:40,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:53:40,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:53:40,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:53:40,387 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:53:40,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:53:40,388 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:53:40,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:53:40,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:53:40,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:53:40,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:53:40,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:53:40,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:53:40,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:53:40,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:53:40,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:53:40,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:53:40,391 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:53:40,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:53:40,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:53:40,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:53:40,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:53:40,392 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:53:40,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:53:40,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:53:40,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:53:40,670 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:53:40,672 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:53:40,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.yml/witness.yml [2024-06-14 11:53:40,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:53:40,803 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:53:40,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-14 11:53:41,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:53:42,141 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:53:42,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-14 11:53:42,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd940a1c0/30c74e607ba1460391a56a1e72679123/FLAG9af319783 [2024-06-14 11:53:42,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd940a1c0/30c74e607ba1460391a56a1e72679123 [2024-06-14 11:53:42,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:53:42,185 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:53:42,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:53:42,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:53:42,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:53:42,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:40" (1/2) ... [2024-06-14 11:53:42,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73005fb3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:53:42, skipping insertion in model container [2024-06-14 11:53:42,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:40" (1/2) ... [2024-06-14 11:53:42,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2929ed25 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:53:42, skipping insertion in model container [2024-06-14 11:53:42,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:53:42" (2/2) ... [2024-06-14 11:53:42,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73005fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42, skipping insertion in model container [2024-06-14 11:53:42,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:53:42" (2/2) ... [2024-06-14 11:53:42,199 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:53:42,270 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:53:42,272 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-06-14 11:53:42,272 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-06-14 11:53:42,272 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:53:42,273 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-14 11:53:42,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:53:42,677 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:53:42,686 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:53:42,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:53:42,860 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:53:42,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42 WrapperNode [2024-06-14 11:53:42,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:53:42,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:53:42,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:53:42,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:53:42,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,926 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-14 11:53:42,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:53:42,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:53:42,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:53:42,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:53:42,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,973 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:53:42,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:42,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:43,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:43,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:43,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:43,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:53:43,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:53:43,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:53:43,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:53:43,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (1/1) ... [2024-06-14 11:53:43,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:53:43,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:53:43,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 11:53:43,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 11:53:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:53:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:53:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:53:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:53:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:53:43,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:53:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:53:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:53:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:53:43,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:53:43,183 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:53:43,339 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:53:43,341 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:53:43,681 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:53:43,681 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:53:43,829 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:53:43,830 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:53:43,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:53:43 BoogieIcfgContainer [2024-06-14 11:53:43,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:53:43,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:53:43,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:53:43,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:53:43,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:40" (1/4) ... [2024-06-14 11:53:43,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465f90b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:53:43, skipping insertion in model container [2024-06-14 11:53:43,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:53:42" (2/4) ... [2024-06-14 11:53:43,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465f90b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:53:43, skipping insertion in model container [2024-06-14 11:53:43,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:42" (3/4) ... [2024-06-14 11:53:43,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465f90b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:53:43, skipping insertion in model container [2024-06-14 11:53:43,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:53:43" (4/4) ... [2024-06-14 11:53:43,838 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-14 11:53:43,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:53:43,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:53:43,854 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:53:43,908 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:53:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:53:43,985 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 11:53:43,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:53:43,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:53:43,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:53:43,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 11:53:44,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:53:44,022 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69680b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:53:44,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:53:44,027 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:53:44,027 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:53:44,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:53:44,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:44,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:53:44,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:44,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1828167494, now seen corresponding path program 1 times [2024-06-14 11:53:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72963844] [2024-06-14 11:53:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:45,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72963844] [2024-06-14 11:53:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72963844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:53:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114604973] [2024-06-14 11:53:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:53:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:53:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:53:45,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 11:53:45,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:45,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:45,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 11:53:45,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:45,352 INFO L124 PetriNetUnfolderBase]: 162/315 cut-off events. [2024-06-14 11:53:45,352 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 11:53:45,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 315 events. 162/315 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1246 event pairs, 97 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 614. Up to 288 conditions per place. [2024-06-14 11:53:45,359 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 11:53:45,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 123 flow [2024-06-14 11:53:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:53:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:53:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-14 11:53:45,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-06-14 11:53:45,372 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 58 transitions. [2024-06-14 11:53:45,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 123 flow [2024-06-14 11:53:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:45,376 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 11:53:45,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 11:53:45,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 11:53:45,381 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 11:53:45,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:45,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:45,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:53:45,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:45,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 228048693, now seen corresponding path program 1 times [2024-06-14 11:53:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:45,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266897764] [2024-06-14 11:53:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:46,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:46,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266897764] [2024-06-14 11:53:46,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266897764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:46,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:46,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:53:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459900648] [2024-06-14 11:53:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:53:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:53:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:53:46,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 11:53:46,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 11:53:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:46,231 INFO L124 PetriNetUnfolderBase]: 159/310 cut-off events. [2024-06-14 11:53:46,231 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-14 11:53:46,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 310 events. 159/310 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1214 event pairs, 79 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 685. Up to 274 conditions per place. [2024-06-14 11:53:46,237 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 27 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-14 11:53:46,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 165 flow [2024-06-14 11:53:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:53:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:53:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-14 11:53:46,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-14 11:53:46,241 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 74 transitions. [2024-06-14 11:53:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 165 flow [2024-06-14 11:53:46,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:53:46,246 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 11:53:46,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 11:53:46,247 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 11:53:46,248 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 11:53:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:46,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:46,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:53:46,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1541873971, now seen corresponding path program 1 times [2024-06-14 11:53:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82533191] [2024-06-14 11:53:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:46,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82533191] [2024-06-14 11:53:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82533191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:53:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139995289] [2024-06-14 11:53:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:46,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:53:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:46,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:53:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:53:47,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 11:53:47,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:47,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:47,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 11:53:47,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:47,182 INFO L124 PetriNetUnfolderBase]: 187/360 cut-off events. [2024-06-14 11:53:47,182 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-14 11:53:47,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 360 events. 187/360 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1392 event pairs, 83 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 878. Up to 313 conditions per place. [2024-06-14 11:53:47,186 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 11:53:47,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 215 flow [2024-06-14 11:53:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-14 11:53:47,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-06-14 11:53:47,191 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 86 transitions. [2024-06-14 11:53:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 215 flow [2024-06-14 11:53:47,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:47,194 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-14 11:53:47,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 11:53:47,196 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 11:53:47,196 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-14 11:53:47,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:47,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:47,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:47,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:53:47,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:47,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash -553452156, now seen corresponding path program 1 times [2024-06-14 11:53:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173844198] [2024-06-14 11:53:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:47,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:47,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173844198] [2024-06-14 11:53:47,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173844198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:47,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:47,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368983666] [2024-06-14 11:53:47,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:47,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:47,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:48,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 11:53:48,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:48,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:48,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 11:53:48,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:48,160 INFO L124 PetriNetUnfolderBase]: 184/357 cut-off events. [2024-06-14 11:53:48,160 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-14 11:53:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 357 events. 184/357 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 65 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 948. Up to 299 conditions per place. [2024-06-14 11:53:48,163 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-14 11:53:48,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 263 flow [2024-06-14 11:53:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-14 11:53:48,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-14 11:53:48,165 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 101 transitions. [2024-06-14 11:53:48,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 263 flow [2024-06-14 11:53:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:48,168 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-14 11:53:48,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-14 11:53:48,169 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-14 11:53:48,169 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-14 11:53:48,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:48,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:48,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:53:48,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:48,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash -190316767, now seen corresponding path program 1 times [2024-06-14 11:53:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855889503] [2024-06-14 11:53:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855889503] [2024-06-14 11:53:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855889503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:48,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160067894] [2024-06-14 11:53:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:48,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:48,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:48,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:48,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:48,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:49,198 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2024-06-14 11:53:49,198 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-14 11:53:49,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 424 events. 230/424 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1588 event pairs, 100 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1230. Up to 402 conditions per place. [2024-06-14 11:53:49,201 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-14 11:53:49,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 237 flow [2024-06-14 11:53:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-14 11:53:49,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 11:53:49,202 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 5 states and 67 transitions. [2024-06-14 11:53:49,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 237 flow [2024-06-14 11:53:49,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 216 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:49,205 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 153 flow [2024-06-14 11:53:49,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-14 11:53:49,205 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-14 11:53:49,205 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 153 flow [2024-06-14 11:53:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:49,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:49,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:49,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:53:49,206 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:49,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 708445859, now seen corresponding path program 1 times [2024-06-14 11:53:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695808607] [2024-06-14 11:53:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:50,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695808607] [2024-06-14 11:53:50,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695808607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:50,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:50,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480461621] [2024-06-14 11:53:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:50,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:50,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:50,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 153 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:50,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:50,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:50,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:50,590 INFO L124 PetriNetUnfolderBase]: 223/415 cut-off events. [2024-06-14 11:53:50,590 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2024-06-14 11:53:50,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 415 events. 223/415 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1547 event pairs, 58 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1259. Up to 338 conditions per place. [2024-06-14 11:53:50,593 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 46 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-14 11:53:50,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 349 flow [2024-06-14 11:53:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:53:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:53:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-14 11:53:50,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-14 11:53:50,595 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 153 flow. Second operand 8 states and 124 transitions. [2024-06-14 11:53:50,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 349 flow [2024-06-14 11:53:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 338 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:50,598 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 202 flow [2024-06-14 11:53:50,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-14 11:53:50,599 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-14 11:53:50,599 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 202 flow [2024-06-14 11:53:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:50,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:50,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:50,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:53:50,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:50,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1623619635, now seen corresponding path program 1 times [2024-06-14 11:53:50,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:50,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023914048] [2024-06-14 11:53:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023914048] [2024-06-14 11:53:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023914048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:51,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:51,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092312507] [2024-06-14 11:53:51,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:51,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:51,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:51,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:51,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:51,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:51,693 INFO L124 PetriNetUnfolderBase]: 220/409 cut-off events. [2024-06-14 11:53:51,693 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-06-14 11:53:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 409 events. 220/409 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1490 event pairs, 58 based on Foata normal form. 3/411 useless extension candidates. Maximal degree in co-relation 1365. Up to 379 conditions per place. [2024-06-14 11:53:51,697 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-14 11:53:51,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 318 flow [2024-06-14 11:53:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-14 11:53:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 11:53:51,698 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 202 flow. Second operand 6 states and 79 transitions. [2024-06-14 11:53:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 318 flow [2024-06-14 11:53:51,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 289 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:53:51,702 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 206 flow [2024-06-14 11:53:51,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-14 11:53:51,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-14 11:53:51,705 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 206 flow [2024-06-14 11:53:51,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:51,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:51,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:53:51,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:51,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2069385460, now seen corresponding path program 1 times [2024-06-14 11:53:51,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630899422] [2024-06-14 11:53:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:52,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:52,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630899422] [2024-06-14 11:53:52,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630899422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:52,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:52,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:52,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120548498] [2024-06-14 11:53:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:52,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:52,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:52,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:52,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:52,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:52,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:52,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:52,804 INFO L124 PetriNetUnfolderBase]: 225/416 cut-off events. [2024-06-14 11:53:52,804 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2024-06-14 11:53:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 416 events. 225/416 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1546 event pairs, 58 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1443. Up to 377 conditions per place. [2024-06-14 11:53:52,807 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-06-14 11:53:52,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 362 flow [2024-06-14 11:53:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-14 11:53:52,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-14 11:53:52,810 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 206 flow. Second operand 6 states and 83 transitions. [2024-06-14 11:53:52,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 362 flow [2024-06-14 11:53:52,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:52,813 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 236 flow [2024-06-14 11:53:52,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-14 11:53:52,816 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-14 11:53:52,816 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 236 flow [2024-06-14 11:53:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:52,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:52,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:52,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:53:52,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:52,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1808870444, now seen corresponding path program 2 times [2024-06-14 11:53:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:52,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230473572] [2024-06-14 11:53:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230473572] [2024-06-14 11:53:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230473572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766566997] [2024-06-14 11:53:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:53,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:53,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:53,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:53,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:53,917 INFO L124 PetriNetUnfolderBase]: 223/413 cut-off events. [2024-06-14 11:53:53,917 INFO L125 PetriNetUnfolderBase]: For 1666/1666 co-relation queries the response was YES. [2024-06-14 11:53:53,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 413 events. 223/413 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1515 event pairs, 57 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1505. Up to 387 conditions per place. [2024-06-14 11:53:53,920 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 39 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-06-14 11:53:53,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 344 flow [2024-06-14 11:53:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 11:53:53,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 11:53:53,921 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 236 flow. Second operand 6 states and 77 transitions. [2024-06-14 11:53:53,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 344 flow [2024-06-14 11:53:53,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 332 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:53,924 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 245 flow [2024-06-14 11:53:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 11:53:53,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-14 11:53:53,925 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 245 flow [2024-06-14 11:53:53,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:53,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:53:53,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:53,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 486985931, now seen corresponding path program 1 times [2024-06-14 11:53:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553167295] [2024-06-14 11:53:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553167295] [2024-06-14 11:53:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553167295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:55,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:53:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923114600] [2024-06-14 11:53:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:55,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:53:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:53:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:53:55,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:55,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 245 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:55,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:55,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:55,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:55,534 INFO L124 PetriNetUnfolderBase]: 217/403 cut-off events. [2024-06-14 11:53:55,535 INFO L125 PetriNetUnfolderBase]: For 2095/2095 co-relation queries the response was YES. [2024-06-14 11:53:55,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 403 events. 217/403 cut-off events. For 2095/2095 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1457 event pairs, 35 based on Foata normal form. 4/406 useless extension candidates. Maximal degree in co-relation 1498. Up to 307 conditions per place. [2024-06-14 11:53:55,538 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-14 11:53:55,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 425 flow [2024-06-14 11:53:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:53:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:53:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-14 11:53:55,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-14 11:53:55,539 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 245 flow. Second operand 9 states and 133 transitions. [2024-06-14 11:53:55,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 425 flow [2024-06-14 11:53:55,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 404 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 11:53:55,543 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 244 flow [2024-06-14 11:53:55,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-06-14 11:53:55,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-14 11:53:55,544 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 244 flow [2024-06-14 11:53:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:55,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:55,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:55,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:53:55,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:55,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1461964812, now seen corresponding path program 1 times [2024-06-14 11:53:55,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:55,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26945671] [2024-06-14 11:53:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:55,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:56,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:56,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26945671] [2024-06-14 11:53:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26945671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:56,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:56,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:56,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617110129] [2024-06-14 11:53:56,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:56,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:56,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:56,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:53:56,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:56,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:56,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:53:56,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:56,621 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-14 11:53:56,622 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-06-14 11:53:56,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 426 events. 238/426 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1507 event pairs, 53 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 1653. Up to 381 conditions per place. [2024-06-14 11:53:56,625 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2024-06-14 11:53:56,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 438 flow [2024-06-14 11:53:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 11:53:56,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-14 11:53:56,626 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 244 flow. Second operand 7 states and 90 transitions. [2024-06-14 11:53:56,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 438 flow [2024-06-14 11:53:56,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 402 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:53:56,630 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 269 flow [2024-06-14 11:53:56,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-14 11:53:56,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-14 11:53:56,631 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 269 flow [2024-06-14 11:53:56,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:56,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:56,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:56,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:53:56,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:56,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1461785074, now seen corresponding path program 1 times [2024-06-14 11:53:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71587846] [2024-06-14 11:53:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:57,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71587846] [2024-06-14 11:53:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71587846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:57,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:57,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111080278] [2024-06-14 11:53:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:57,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:57,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 269 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:57,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:57,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:57,713 INFO L124 PetriNetUnfolderBase]: 243/443 cut-off events. [2024-06-14 11:53:57,714 INFO L125 PetriNetUnfolderBase]: For 3157/3157 co-relation queries the response was YES. [2024-06-14 11:53:57,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 443 events. 243/443 cut-off events. For 3157/3157 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1622 event pairs, 56 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1756. Up to 373 conditions per place. [2024-06-14 11:53:57,717 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-14 11:53:57,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 477 flow [2024-06-14 11:53:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 11:53:57,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:53:57,719 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 269 flow. Second operand 7 states and 98 transitions. [2024-06-14 11:53:57,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 477 flow [2024-06-14 11:53:57,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 456 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:57,725 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 322 flow [2024-06-14 11:53:57,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-14 11:53:57,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-06-14 11:53:57,726 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 322 flow [2024-06-14 11:53:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:57,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:53:57,726 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:57,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1461785322, now seen corresponding path program 2 times [2024-06-14 11:53:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:57,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77853800] [2024-06-14 11:53:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77853800] [2024-06-14 11:53:58,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77853800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:58,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791446114] [2024-06-14 11:53:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:58,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:53:58,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:58,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:58,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:53:58,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:58,792 INFO L124 PetriNetUnfolderBase]: 260/462 cut-off events. [2024-06-14 11:53:58,792 INFO L125 PetriNetUnfolderBase]: For 3665/3665 co-relation queries the response was YES. [2024-06-14 11:53:58,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 462 events. 260/462 cut-off events. For 3665/3665 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1649 event pairs, 55 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 1991. Up to 416 conditions per place. [2024-06-14 11:53:58,797 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2024-06-14 11:53:58,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 514 flow [2024-06-14 11:53:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 11:53:58,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-14 11:53:58,798 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 322 flow. Second operand 7 states and 88 transitions. [2024-06-14 11:53:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 514 flow [2024-06-14 11:53:58,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 503 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:58,804 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 362 flow [2024-06-14 11:53:58,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-14 11:53:58,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-14 11:53:58,805 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 362 flow [2024-06-14 11:53:58,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:58,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:58,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:58,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:53:58,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:58,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:58,806 INFO L85 PathProgramCache]: Analyzing trace with hash 240418462, now seen corresponding path program 2 times [2024-06-14 11:53:58,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:58,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603303746] [2024-06-14 11:53:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603303746] [2024-06-14 11:53:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603303746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798519383] [2024-06-14 11:53:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:59,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:53:59,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:59,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:59,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:53:59,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:59,888 INFO L124 PetriNetUnfolderBase]: 255/463 cut-off events. [2024-06-14 11:53:59,888 INFO L125 PetriNetUnfolderBase]: For 4461/4461 co-relation queries the response was YES. [2024-06-14 11:53:59,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 463 events. 255/463 cut-off events. For 4461/4461 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1707 event pairs, 54 based on Foata normal form. 3/465 useless extension candidates. Maximal degree in co-relation 2049. Up to 422 conditions per place. [2024-06-14 11:53:59,892 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-14 11:53:59,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 518 flow [2024-06-14 11:53:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 11:53:59,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-14 11:53:59,894 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 362 flow. Second operand 7 states and 88 transitions. [2024-06-14 11:53:59,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 518 flow [2024-06-14 11:53:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 491 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:59,899 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 378 flow [2024-06-14 11:53:59,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-14 11:53:59,899 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-14 11:53:59,899 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 378 flow [2024-06-14 11:53:59,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:59,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:59,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:59,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:53:59,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:59,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -369114016, now seen corresponding path program 3 times [2024-06-14 11:53:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438176739] [2024-06-14 11:53:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:00,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:00,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438176739] [2024-06-14 11:54:00,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438176739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:00,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:00,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051107720] [2024-06-14 11:54:00,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:00,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:00,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:00,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:00,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:00,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:00,922 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-14 11:54:00,923 INFO L125 PetriNetUnfolderBase]: For 4877/4877 co-relation queries the response was YES. [2024-06-14 11:54:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 474 events. 267/474 cut-off events. For 4877/4877 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1712 event pairs, 54 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 2147. Up to 456 conditions per place. [2024-06-14 11:54:00,928 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-14 11:54:00,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 520 flow [2024-06-14 11:54:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:00,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 11:54:00,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-14 11:54:00,929 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 378 flow. Second operand 7 states and 80 transitions. [2024-06-14 11:54:00,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 520 flow [2024-06-14 11:54:00,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 493 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:00,935 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 376 flow [2024-06-14 11:54:00,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-14 11:54:00,936 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 11:54:00,936 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 376 flow [2024-06-14 11:54:00,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:00,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:00,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:00,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:54:00,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:00,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash -369113768, now seen corresponding path program 3 times [2024-06-14 11:54:00,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:00,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531801722] [2024-06-14 11:54:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531801722] [2024-06-14 11:54:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531801722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425231658] [2024-06-14 11:54:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:01,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:01,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:01,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:01,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:01,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:02,067 INFO L124 PetriNetUnfolderBase]: 247/451 cut-off events. [2024-06-14 11:54:02,067 INFO L125 PetriNetUnfolderBase]: For 5311/5311 co-relation queries the response was YES. [2024-06-14 11:54:02,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 451 events. 247/451 cut-off events. For 5311/5311 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1663 event pairs, 52 based on Foata normal form. 3/453 useless extension candidates. Maximal degree in co-relation 2034. Up to 399 conditions per place. [2024-06-14 11:54:02,071 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 49 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-14 11:54:02,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 528 flow [2024-06-14 11:54:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 11:54:02,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-14 11:54:02,073 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 376 flow. Second operand 7 states and 92 transitions. [2024-06-14 11:54:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 528 flow [2024-06-14 11:54:02,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 490 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:02,079 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 369 flow [2024-06-14 11:54:02,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-14 11:54:02,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 11:54:02,081 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 369 flow [2024-06-14 11:54:02,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:02,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:54:02,082 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:02,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1923582313, now seen corresponding path program 1 times [2024-06-14 11:54:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:02,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307611590] [2024-06-14 11:54:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307611590] [2024-06-14 11:54:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307611590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:02,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532633833] [2024-06-14 11:54:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:02,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:02,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:03,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:03,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 369 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:03,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:03,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:03,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:03,260 INFO L124 PetriNetUnfolderBase]: 264/470 cut-off events. [2024-06-14 11:54:03,261 INFO L125 PetriNetUnfolderBase]: For 5790/5790 co-relation queries the response was YES. [2024-06-14 11:54:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 470 events. 264/470 cut-off events. For 5790/5790 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1730 event pairs, 52 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2163. Up to 405 conditions per place. [2024-06-14 11:54:03,264 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-14 11:54:03,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 625 flow [2024-06-14 11:54:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:54:03,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-14 11:54:03,266 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 369 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:54:03,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 625 flow [2024-06-14 11:54:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 584 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:03,274 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 407 flow [2024-06-14 11:54:03,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=407, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-14 11:54:03,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 11:54:03,275 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 407 flow [2024-06-14 11:54:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:03,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:03,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:03,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:54:03,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:03,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash -533866750, now seen corresponding path program 1 times [2024-06-14 11:54:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204706910] [2024-06-14 11:54:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:03,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204706910] [2024-06-14 11:54:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204706910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:04,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639004654] [2024-06-14 11:54:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:04,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:04,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:04,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 407 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:04,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:04,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:04,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:04,371 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-14 11:54:04,372 INFO L125 PetriNetUnfolderBase]: For 7041/7041 co-relation queries the response was YES. [2024-06-14 11:54:04,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 501 events. 283/501 cut-off events. For 7041/7041 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1864 event pairs, 57 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2363. Up to 383 conditions per place. [2024-06-14 11:54:04,376 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 60 selfloop transitions, 25 changer transitions 0/87 dead transitions. [2024-06-14 11:54:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 689 flow [2024-06-14 11:54:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 11:54:04,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:54:04,378 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 407 flow. Second operand 8 states and 108 transitions. [2024-06-14 11:54:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 689 flow [2024-06-14 11:54:04,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 652 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:04,410 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 453 flow [2024-06-14 11:54:04,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-14 11:54:04,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-06-14 11:54:04,411 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 453 flow [2024-06-14 11:54:04,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:04,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:04,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:04,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:54:04,411 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1923732043, now seen corresponding path program 2 times [2024-06-14 11:54:04,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:04,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718557171] [2024-06-14 11:54:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:05,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718557171] [2024-06-14 11:54:05,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718557171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:05,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:05,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027902195] [2024-06-14 11:54:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:05,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:05,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:05,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:05,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:05,543 INFO L124 PetriNetUnfolderBase]: 286/506 cut-off events. [2024-06-14 11:54:05,543 INFO L125 PetriNetUnfolderBase]: For 7596/7596 co-relation queries the response was YES. [2024-06-14 11:54:05,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 506 events. 286/506 cut-off events. For 7596/7596 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1874 event pairs, 56 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 2499. Up to 440 conditions per place. [2024-06-14 11:54:05,547 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-14 11:54:05,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 699 flow [2024-06-14 11:54:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 11:54:05,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-14 11:54:05,548 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 453 flow. Second operand 8 states and 101 transitions. [2024-06-14 11:54:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 699 flow [2024-06-14 11:54:05,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 667 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:05,558 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 484 flow [2024-06-14 11:54:05,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=484, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-14 11:54:05,558 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-14 11:54:05,558 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 484 flow [2024-06-14 11:54:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:05,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:05,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:05,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:54:05,559 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:05,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -109539285, now seen corresponding path program 3 times [2024-06-14 11:54:05,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:05,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262483284] [2024-06-14 11:54:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262483284] [2024-06-14 11:54:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262483284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:06,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:06,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531542932] [2024-06-14 11:54:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:06,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:06,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 484 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:06,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:06,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:06,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:06,563 INFO L124 PetriNetUnfolderBase]: 289/511 cut-off events. [2024-06-14 11:54:06,563 INFO L125 PetriNetUnfolderBase]: For 8325/8325 co-relation queries the response was YES. [2024-06-14 11:54:06,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 511 events. 289/511 cut-off events. For 8325/8325 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1904 event pairs, 60 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 2591. Up to 444 conditions per place. [2024-06-14 11:54:06,567 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 56 selfloop transitions, 24 changer transitions 0/82 dead transitions. [2024-06-14 11:54:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 726 flow [2024-06-14 11:54:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:54:06,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:54:06,569 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 484 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:54:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 726 flow [2024-06-14 11:54:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 687 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:06,578 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 514 flow [2024-06-14 11:54:06,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-06-14 11:54:06,579 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2024-06-14 11:54:06,579 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 514 flow [2024-06-14 11:54:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:06,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:06,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:06,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:54:06,580 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:06,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1929303890, now seen corresponding path program 2 times [2024-06-14 11:54:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:06,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643017755] [2024-06-14 11:54:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643017755] [2024-06-14 11:54:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643017755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381474026] [2024-06-14 11:54:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:07,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:07,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:07,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:07,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:07,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:07,609 INFO L124 PetriNetUnfolderBase]: 313/550 cut-off events. [2024-06-14 11:54:07,609 INFO L125 PetriNetUnfolderBase]: For 10281/10281 co-relation queries the response was YES. [2024-06-14 11:54:07,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 550 events. 313/550 cut-off events. For 10281/10281 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2093 event pairs, 63 based on Foata normal form. 3/552 useless extension candidates. Maximal degree in co-relation 2838. Up to 413 conditions per place. [2024-06-14 11:54:07,614 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2024-06-14 11:54:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 852 flow [2024-06-14 11:54:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 11:54:07,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-14 11:54:07,615 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 514 flow. Second operand 8 states and 107 transitions. [2024-06-14 11:54:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 852 flow [2024-06-14 11:54:07,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 813 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:07,625 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 562 flow [2024-06-14 11:54:07,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-14 11:54:07,626 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-14 11:54:07,626 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 562 flow [2024-06-14 11:54:07,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:07,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:07,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:54:07,627 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1929296450, now seen corresponding path program 3 times [2024-06-14 11:54:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2189443] [2024-06-14 11:54:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:08,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2189443] [2024-06-14 11:54:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2189443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:08,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:08,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202620999] [2024-06-14 11:54:08,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:08,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:08,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:08,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:08,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 562 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:08,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:08,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:08,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:08,770 INFO L124 PetriNetUnfolderBase]: 307/541 cut-off events. [2024-06-14 11:54:08,771 INFO L125 PetriNetUnfolderBase]: For 10743/10743 co-relation queries the response was YES. [2024-06-14 11:54:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2876 conditions, 541 events. 307/541 cut-off events. For 10743/10743 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2060 event pairs, 61 based on Foata normal form. 3/543 useless extension candidates. Maximal degree in co-relation 2832. Up to 409 conditions per place. [2024-06-14 11:54:08,777 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-14 11:54:08,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 840 flow [2024-06-14 11:54:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 11:54:08,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-14 11:54:08,779 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 562 flow. Second operand 8 states and 109 transitions. [2024-06-14 11:54:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 840 flow [2024-06-14 11:54:08,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 797 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:08,795 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 576 flow [2024-06-14 11:54:08,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2024-06-14 11:54:08,796 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 11:54:08,796 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 576 flow [2024-06-14 11:54:08,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:08,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:08,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:08,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:54:08,796 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:08,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1137220812, now seen corresponding path program 4 times [2024-06-14 11:54:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785392847] [2024-06-14 11:54:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785392847] [2024-06-14 11:54:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785392847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:09,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:09,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064589972] [2024-06-14 11:54:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:09,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:09,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:09,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:09,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:09,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:09,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:09,865 INFO L124 PetriNetUnfolderBase]: 331/580 cut-off events. [2024-06-14 11:54:09,865 INFO L125 PetriNetUnfolderBase]: For 12685/12685 co-relation queries the response was YES. [2024-06-14 11:54:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 580 events. 331/580 cut-off events. For 12685/12685 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2251 event pairs, 65 based on Foata normal form. 3/582 useless extension candidates. Maximal degree in co-relation 3098. Up to 496 conditions per place. [2024-06-14 11:54:09,870 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-14 11:54:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 928 flow [2024-06-14 11:54:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 11:54:09,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-14 11:54:09,872 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 576 flow. Second operand 8 states and 101 transitions. [2024-06-14 11:54:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 928 flow [2024-06-14 11:54:09,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 862 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:09,888 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 593 flow [2024-06-14 11:54:09,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-14 11:54:09,889 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-14 11:54:09,889 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 593 flow [2024-06-14 11:54:09,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:09,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:09,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:09,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:54:09,890 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:09,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1442368568, now seen corresponding path program 5 times [2024-06-14 11:54:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223503239] [2024-06-14 11:54:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:10,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:10,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223503239] [2024-06-14 11:54:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223503239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:10,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:10,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128061191] [2024-06-14 11:54:10,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:10,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:10,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:10,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:10,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:10,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:10,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:10,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:11,051 INFO L124 PetriNetUnfolderBase]: 325/571 cut-off events. [2024-06-14 11:54:11,051 INFO L125 PetriNetUnfolderBase]: For 12839/12839 co-relation queries the response was YES. [2024-06-14 11:54:11,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 571 events. 325/571 cut-off events. For 12839/12839 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2210 event pairs, 57 based on Foata normal form. 3/573 useless extension candidates. Maximal degree in co-relation 3008. Up to 492 conditions per place. [2024-06-14 11:54:11,059 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 71 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-14 11:54:11,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 859 flow [2024-06-14 11:54:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:54:11,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:54:11,061 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 593 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:54:11,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 859 flow [2024-06-14 11:54:11,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 811 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:11,078 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 590 flow [2024-06-14 11:54:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-06-14 11:54:11,078 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-14 11:54:11,079 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 590 flow [2024-06-14 11:54:11,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:11,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:11,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:11,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:54:11,080 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:11,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash 948045911, now seen corresponding path program 4 times [2024-06-14 11:54:11,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:11,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751022071] [2024-06-14 11:54:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:11,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:11,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751022071] [2024-06-14 11:54:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751022071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:11,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:11,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932907919] [2024-06-14 11:54:11,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:11,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:11,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:11,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:11,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:11,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:11,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:12,095 INFO L124 PetriNetUnfolderBase]: 323/568 cut-off events. [2024-06-14 11:54:12,096 INFO L125 PetriNetUnfolderBase]: For 12942/12942 co-relation queries the response was YES. [2024-06-14 11:54:12,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 568 events. 323/568 cut-off events. For 12942/12942 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2193 event pairs, 67 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3008. Up to 547 conditions per place. [2024-06-14 11:54:12,107 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-14 11:54:12,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 776 flow [2024-06-14 11:54:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 11:54:12,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-14 11:54:12,109 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 590 flow. Second operand 8 states and 89 transitions. [2024-06-14 11:54:12,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 776 flow [2024-06-14 11:54:12,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 720 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:12,125 INFO L231 Difference]: Finished difference. Result has 99 places, 78 transitions, 563 flow [2024-06-14 11:54:12,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=99, PETRI_TRANSITIONS=78} [2024-06-14 11:54:12,126 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-14 11:54:12,126 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 78 transitions, 563 flow [2024-06-14 11:54:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:12,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:12,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:12,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:54:12,127 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:12,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1451572778, now seen corresponding path program 6 times [2024-06-14 11:54:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15831006] [2024-06-14 11:54:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15831006] [2024-06-14 11:54:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15831006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666985347] [2024-06-14 11:54:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:12,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:12,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:12,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 78 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:12,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:12,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:12,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:13,162 INFO L124 PetriNetUnfolderBase]: 317/559 cut-off events. [2024-06-14 11:54:13,162 INFO L125 PetriNetUnfolderBase]: For 13558/13558 co-relation queries the response was YES. [2024-06-14 11:54:13,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 559 events. 317/559 cut-off events. For 13558/13558 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2159 event pairs, 61 based on Foata normal form. 3/561 useless extension candidates. Maximal degree in co-relation 2892. Up to 522 conditions per place. [2024-06-14 11:54:13,166 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 76 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-14 11:54:13,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 769 flow [2024-06-14 11:54:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 11:54:13,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:54:13,168 INFO L175 Difference]: Start difference. First operand has 99 places, 78 transitions, 563 flow. Second operand 8 states and 93 transitions. [2024-06-14 11:54:13,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 769 flow [2024-06-14 11:54:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 705 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:13,183 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 528 flow [2024-06-14 11:54:13,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-06-14 11:54:13,183 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-14 11:54:13,183 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 528 flow [2024-06-14 11:54:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:13,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:13,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:13,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:54:13,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:13,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 948322617, now seen corresponding path program 1 times [2024-06-14 11:54:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638583400] [2024-06-14 11:54:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638583400] [2024-06-14 11:54:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638583400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:14,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028031654] [2024-06-14 11:54:14,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:14,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:14,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:14,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:14,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:14,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:14,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:14,477 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-14 11:54:14,477 INFO L125 PetriNetUnfolderBase]: For 13565/13565 co-relation queries the response was YES. [2024-06-14 11:54:14,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 526 events. 286/526 cut-off events. For 13565/13565 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2095 event pairs, 57 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 2691. Up to 458 conditions per place. [2024-06-14 11:54:14,480 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-14 11:54:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 90 transitions, 720 flow [2024-06-14 11:54:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 11:54:14,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 11:54:14,482 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 528 flow. Second operand 8 states and 98 transitions. [2024-06-14 11:54:14,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 90 transitions, 720 flow [2024-06-14 11:54:14,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 680 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:14,492 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 537 flow [2024-06-14 11:54:14,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-14 11:54:14,492 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-14 11:54:14,492 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 537 flow [2024-06-14 11:54:14,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:14,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:14,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:14,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:54:14,493 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:14,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1451911391, now seen corresponding path program 1 times [2024-06-14 11:54:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:14,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341488245] [2024-06-14 11:54:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:14,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:15,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341488245] [2024-06-14 11:54:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341488245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:15,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:15,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690707204] [2024-06-14 11:54:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:15,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:15,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:15,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:15,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:15,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:15,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:16,299 INFO L124 PetriNetUnfolderBase]: 282/520 cut-off events. [2024-06-14 11:54:16,299 INFO L125 PetriNetUnfolderBase]: For 13745/13745 co-relation queries the response was YES. [2024-06-14 11:54:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 520 events. 282/520 cut-off events. For 13745/13745 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2043 event pairs, 56 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 2666. Up to 455 conditions per place. [2024-06-14 11:54:16,303 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 66 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-06-14 11:54:16,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 90 transitions, 713 flow [2024-06-14 11:54:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:54:16,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:54:16,305 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 537 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:54:16,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 90 transitions, 713 flow [2024-06-14 11:54:16,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 90 transitions, 677 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:16,320 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 527 flow [2024-06-14 11:54:16,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=527, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-06-14 11:54:16,321 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-14 11:54:16,321 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 527 flow [2024-06-14 11:54:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:16,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:16,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:16,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:54:16,322 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:16,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash 721998961, now seen corresponding path program 1 times [2024-06-14 11:54:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:16,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458532096] [2024-06-14 11:54:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458532096] [2024-06-14 11:54:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458532096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:17,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444163999] [2024-06-14 11:54:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:17,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:17,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:17,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:17,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:17,556 INFO L124 PetriNetUnfolderBase]: 313/553 cut-off events. [2024-06-14 11:54:17,557 INFO L125 PetriNetUnfolderBase]: For 14413/14413 co-relation queries the response was YES. [2024-06-14 11:54:17,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 553 events. 313/553 cut-off events. For 14413/14413 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2117 event pairs, 60 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 2846. Up to 505 conditions per place. [2024-06-14 11:54:17,561 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-14 11:54:17,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 795 flow [2024-06-14 11:54:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:54:17,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-14 11:54:17,562 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 527 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:54:17,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 795 flow [2024-06-14 11:54:17,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 769 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:17,581 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 552 flow [2024-06-14 11:54:17,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=552, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-06-14 11:54:17,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-14 11:54:17,582 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 552 flow [2024-06-14 11:54:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:17,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:17,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:17,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:54:17,583 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:17,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 722118931, now seen corresponding path program 2 times [2024-06-14 11:54:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509724214] [2024-06-14 11:54:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509724214] [2024-06-14 11:54:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509724214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413102289] [2024-06-14 11:54:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:18,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:18,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:18,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:18,600 INFO L124 PetriNetUnfolderBase]: 316/558 cut-off events. [2024-06-14 11:54:18,600 INFO L125 PetriNetUnfolderBase]: For 15379/15379 co-relation queries the response was YES. [2024-06-14 11:54:18,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 558 events. 316/558 cut-off events. For 15379/15379 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2151 event pairs, 61 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 2943. Up to 469 conditions per place. [2024-06-14 11:54:18,603 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 72 selfloop transitions, 31 changer transitions 0/105 dead transitions. [2024-06-14 11:54:18,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 898 flow [2024-06-14 11:54:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:54:18,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:54:18,605 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 552 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:54:18,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 898 flow [2024-06-14 11:54:18,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 863 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:18,617 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 624 flow [2024-06-14 11:54:18,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2024-06-14 11:54:18,617 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-14 11:54:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 624 flow [2024-06-14 11:54:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:18,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:18,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:54:18,618 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:18,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 629821403, now seen corresponding path program 1 times [2024-06-14 11:54:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953382541] [2024-06-14 11:54:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:18,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953382541] [2024-06-14 11:54:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953382541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:19,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:19,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139111473] [2024-06-14 11:54:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:19,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:19,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:19,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:19,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:19,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:19,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:19,657 INFO L124 PetriNetUnfolderBase]: 335/589 cut-off events. [2024-06-14 11:54:19,658 INFO L125 PetriNetUnfolderBase]: For 18417/18417 co-relation queries the response was YES. [2024-06-14 11:54:19,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 589 events. 335/589 cut-off events. For 18417/18417 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2328 event pairs, 54 based on Foata normal form. 3/591 useless extension candidates. Maximal degree in co-relation 3187. Up to 364 conditions per place. [2024-06-14 11:54:19,661 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 73 selfloop transitions, 42 changer transitions 0/117 dead transitions. [2024-06-14 11:54:19,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 117 transitions, 1012 flow [2024-06-14 11:54:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 11:54:19,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-14 11:54:19,662 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 624 flow. Second operand 9 states and 124 transitions. [2024-06-14 11:54:19,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 117 transitions, 1012 flow [2024-06-14 11:54:19,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 965 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:19,677 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 698 flow [2024-06-14 11:54:19,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=698, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-14 11:54:19,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-14 11:54:19,677 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 698 flow [2024-06-14 11:54:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:19,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:19,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:19,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:54:19,678 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:19,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 726760747, now seen corresponding path program 2 times [2024-06-14 11:54:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990904907] [2024-06-14 11:54:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:20,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990904907] [2024-06-14 11:54:20,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990904907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:20,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:20,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31889458] [2024-06-14 11:54:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:20,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:20,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:20,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:20,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:20,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:20,799 INFO L124 PetriNetUnfolderBase]: 359/628 cut-off events. [2024-06-14 11:54:20,799 INFO L125 PetriNetUnfolderBase]: For 21219/21219 co-relation queries the response was YES. [2024-06-14 11:54:20,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 628 events. 359/628 cut-off events. For 21219/21219 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2526 event pairs, 54 based on Foata normal form. 3/630 useless extension candidates. Maximal degree in co-relation 3593. Up to 384 conditions per place. [2024-06-14 11:54:20,805 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 80 selfloop transitions, 39 changer transitions 0/121 dead transitions. [2024-06-14 11:54:20,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 1166 flow [2024-06-14 11:54:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 11:54:20,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:54:20,806 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 698 flow. Second operand 9 states and 126 transitions. [2024-06-14 11:54:20,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 1166 flow [2024-06-14 11:54:20,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 121 transitions, 1100 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:20,824 INFO L231 Difference]: Finished difference. Result has 112 places, 94 transitions, 751 flow [2024-06-14 11:54:20,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=751, PETRI_PLACES=112, PETRI_TRANSITIONS=94} [2024-06-14 11:54:20,825 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 80 predicate places. [2024-06-14 11:54:20,825 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 94 transitions, 751 flow [2024-06-14 11:54:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:20,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:20,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:54:20,825 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 630000893, now seen corresponding path program 3 times [2024-06-14 11:54:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495095475] [2024-06-14 11:54:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:21,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495095475] [2024-06-14 11:54:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495095475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404771083] [2024-06-14 11:54:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:21,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:21,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 94 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:21,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:21,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:21,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:21,923 INFO L124 PetriNetUnfolderBase]: 353/619 cut-off events. [2024-06-14 11:54:21,923 INFO L125 PetriNetUnfolderBase]: For 20947/20947 co-relation queries the response was YES. [2024-06-14 11:54:21,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 619 events. 353/619 cut-off events. For 20947/20947 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2479 event pairs, 52 based on Foata normal form. 3/621 useless extension candidates. Maximal degree in co-relation 3568. Up to 380 conditions per place. [2024-06-14 11:54:21,928 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 76 selfloop transitions, 40 changer transitions 0/118 dead transitions. [2024-06-14 11:54:21,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1109 flow [2024-06-14 11:54:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 11:54:21,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-14 11:54:21,930 INFO L175 Difference]: Start difference. First operand has 112 places, 94 transitions, 751 flow. Second operand 9 states and 122 transitions. [2024-06-14 11:54:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1109 flow [2024-06-14 11:54:21,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 118 transitions, 1048 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:21,961 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 775 flow [2024-06-14 11:54:21,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-14 11:54:21,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2024-06-14 11:54:21,962 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 775 flow [2024-06-14 11:54:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:21,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:21,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:21,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:54:21,963 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:21,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash 726760561, now seen corresponding path program 3 times [2024-06-14 11:54:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515316243] [2024-06-14 11:54:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:22,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515316243] [2024-06-14 11:54:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515316243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305368838] [2024-06-14 11:54:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:22,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:22,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:22,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:22,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:22,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:22,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:22,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:23,100 INFO L124 PetriNetUnfolderBase]: 356/624 cut-off events. [2024-06-14 11:54:23,100 INFO L125 PetriNetUnfolderBase]: For 21329/21329 co-relation queries the response was YES. [2024-06-14 11:54:23,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 624 events. 356/624 cut-off events. For 21329/21329 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2483 event pairs, 69 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3662. Up to 534 conditions per place. [2024-06-14 11:54:23,104 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-14 11:54:23,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 112 transitions, 1117 flow [2024-06-14 11:54:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:54:23,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-14 11:54:23,105 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 775 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:54:23,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 112 transitions, 1117 flow [2024-06-14 11:54:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 1032 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:23,127 INFO L231 Difference]: Finished difference. Result has 117 places, 96 transitions, 775 flow [2024-06-14 11:54:23,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=117, PETRI_TRANSITIONS=96} [2024-06-14 11:54:23,128 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-14 11:54:23,128 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 96 transitions, 775 flow [2024-06-14 11:54:23,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:23,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:23,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:23,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:54:23,128 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:23,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash -321357931, now seen corresponding path program 4 times [2024-06-14 11:54:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424205065] [2024-06-14 11:54:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:23,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424205065] [2024-06-14 11:54:23,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424205065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:23,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:23,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:23,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786989573] [2024-06-14 11:54:23,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:23,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:23,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:23,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:24,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:24,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 96 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:24,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:24,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:24,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:24,187 INFO L124 PetriNetUnfolderBase]: 359/629 cut-off events. [2024-06-14 11:54:24,187 INFO L125 PetriNetUnfolderBase]: For 22422/22422 co-relation queries the response was YES. [2024-06-14 11:54:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 629 events. 359/629 cut-off events. For 22422/22422 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2518 event pairs, 73 based on Foata normal form. 1/629 useless extension candidates. Maximal degree in co-relation 3671. Up to 538 conditions per place. [2024-06-14 11:54:24,191 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 77 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-14 11:54:24,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 111 transitions, 1113 flow [2024-06-14 11:54:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:54:24,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-14 11:54:24,198 INFO L175 Difference]: Start difference. First operand has 117 places, 96 transitions, 775 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:54:24,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 111 transitions, 1113 flow [2024-06-14 11:54:24,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 1055 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:24,230 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 808 flow [2024-06-14 11:54:24,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2024-06-14 11:54:24,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-06-14 11:54:24,231 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 808 flow [2024-06-14 11:54:24,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:24,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:24,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:24,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:54:24,232 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:24,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -321351235, now seen corresponding path program 4 times [2024-06-14 11:54:24,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:24,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030988322] [2024-06-14 11:54:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030988322] [2024-06-14 11:54:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030988322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:25,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:25,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76574933] [2024-06-14 11:54:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:25,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:25,381 INFO L124 PetriNetUnfolderBase]: 398/692 cut-off events. [2024-06-14 11:54:25,382 INFO L125 PetriNetUnfolderBase]: For 28752/28752 co-relation queries the response was YES. [2024-06-14 11:54:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4183 conditions, 692 events. 398/692 cut-off events. For 28752/28752 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2868 event pairs, 72 based on Foata normal form. 3/694 useless extension candidates. Maximal degree in co-relation 4124. Up to 422 conditions per place. [2024-06-14 11:54:25,385 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 85 selfloop transitions, 42 changer transitions 0/129 dead transitions. [2024-06-14 11:54:25,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 129 transitions, 1384 flow [2024-06-14 11:54:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 11:54:25,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:54:25,387 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 808 flow. Second operand 9 states and 126 transitions. [2024-06-14 11:54:25,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 129 transitions, 1384 flow [2024-06-14 11:54:25,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 129 transitions, 1325 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:25,413 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 886 flow [2024-06-14 11:54:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-06-14 11:54:25,413 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-14 11:54:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 886 flow [2024-06-14 11:54:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:25,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:54:25,414 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -321357745, now seen corresponding path program 5 times [2024-06-14 11:54:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152617674] [2024-06-14 11:54:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152617674] [2024-06-14 11:54:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152617674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374899704] [2024-06-14 11:54:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:26,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:26,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:26,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:26,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:26,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:26,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:26,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:26,526 INFO L124 PetriNetUnfolderBase]: 392/683 cut-off events. [2024-06-14 11:54:26,526 INFO L125 PetriNetUnfolderBase]: For 28655/28655 co-relation queries the response was YES. [2024-06-14 11:54:26,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 683 events. 392/683 cut-off events. For 28655/28655 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2818 event pairs, 70 based on Foata normal form. 3/685 useless extension candidates. Maximal degree in co-relation 4100. Up to 418 conditions per place. [2024-06-14 11:54:26,532 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 83 selfloop transitions, 43 changer transitions 0/128 dead transitions. [2024-06-14 11:54:26,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 1344 flow [2024-06-14 11:54:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 11:54:26,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-14 11:54:26,541 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 886 flow. Second operand 9 states and 124 transitions. [2024-06-14 11:54:26,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 1344 flow [2024-06-14 11:54:26,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 1280 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:26,581 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 913 flow [2024-06-14 11:54:26,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-14 11:54:26,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-14 11:54:26,582 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 913 flow [2024-06-14 11:54:26,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:26,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:26,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:26,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:54:26,583 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:26,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash -321120595, now seen corresponding path program 6 times [2024-06-14 11:54:26,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399481832] [2024-06-14 11:54:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399481832] [2024-06-14 11:54:27,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399481832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:27,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:27,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665497503] [2024-06-14 11:54:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:27,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:27,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 913 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:27,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:27,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:27,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:27,748 INFO L124 PetriNetUnfolderBase]: 386/674 cut-off events. [2024-06-14 11:54:27,748 INFO L125 PetriNetUnfolderBase]: For 28249/28249 co-relation queries the response was YES. [2024-06-14 11:54:27,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 674 events. 386/674 cut-off events. For 28249/28249 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2770 event pairs, 74 based on Foata normal form. 3/676 useless extension candidates. Maximal degree in co-relation 4018. Up to 414 conditions per place. [2024-06-14 11:54:27,752 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-14 11:54:27,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1287 flow [2024-06-14 11:54:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 11:54:27,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 11:54:27,754 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 913 flow. Second operand 9 states and 120 transitions. [2024-06-14 11:54:27,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1287 flow [2024-06-14 11:54:27,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1203 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:27,791 INFO L231 Difference]: Finished difference. Result has 130 places, 104 transitions, 924 flow [2024-06-14 11:54:27,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=924, PETRI_PLACES=130, PETRI_TRANSITIONS=104} [2024-06-14 11:54:27,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 11:54:27,792 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 104 transitions, 924 flow [2024-06-14 11:54:27,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:27,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:27,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:27,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:54:27,792 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:27,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -894105845, now seen corresponding path program 7 times [2024-06-14 11:54:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285686656] [2024-06-14 11:54:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:27,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285686656] [2024-06-14 11:54:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285686656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:28,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754672836] [2024-06-14 11:54:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:28,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:28,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:28,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 104 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:28,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:28,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:28,847 INFO L124 PetriNetUnfolderBase]: 410/713 cut-off events. [2024-06-14 11:54:28,847 INFO L125 PetriNetUnfolderBase]: For 32066/32066 co-relation queries the response was YES. [2024-06-14 11:54:28,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 713 events. 410/713 cut-off events. For 32066/32066 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2961 event pairs, 78 based on Foata normal form. 3/715 useless extension candidates. Maximal degree in co-relation 4333. Up to 585 conditions per place. [2024-06-14 11:54:28,850 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-14 11:54:28,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1418 flow [2024-06-14 11:54:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:54:28,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:54:28,852 INFO L175 Difference]: Start difference. First operand has 130 places, 104 transitions, 924 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:54:28,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1418 flow [2024-06-14 11:54:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1304 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:28,888 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 907 flow [2024-06-14 11:54:28,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-06-14 11:54:28,889 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 11:54:28,889 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 907 flow [2024-06-14 11:54:28,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:28,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:28,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:54:28,890 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:28,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash -675346841, now seen corresponding path program 5 times [2024-06-14 11:54:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606137947] [2024-06-14 11:54:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606137947] [2024-06-14 11:54:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606137947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112564776] [2024-06-14 11:54:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:29,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:29,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:29,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:29,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:29,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:29,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:29,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:29,874 INFO L124 PetriNetUnfolderBase]: 408/710 cut-off events. [2024-06-14 11:54:29,874 INFO L125 PetriNetUnfolderBase]: For 31283/31283 co-relation queries the response was YES. [2024-06-14 11:54:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 710 events. 408/710 cut-off events. For 31283/31283 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2955 event pairs, 86 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4230. Up to 686 conditions per place. [2024-06-14 11:54:29,879 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 101 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-06-14 11:54:29,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 1157 flow [2024-06-14 11:54:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 11:54:29,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-14 11:54:29,880 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 907 flow. Second operand 9 states and 98 transitions. [2024-06-14 11:54:29,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 117 transitions, 1157 flow [2024-06-14 11:54:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 117 transitions, 1097 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:29,920 INFO L231 Difference]: Finished difference. Result has 133 places, 108 transitions, 880 flow [2024-06-14 11:54:29,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=133, PETRI_TRANSITIONS=108} [2024-06-14 11:54:29,920 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 11:54:29,920 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 108 transitions, 880 flow [2024-06-14 11:54:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:29,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:29,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:29,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:54:29,921 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:29,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1763747097, now seen corresponding path program 8 times [2024-06-14 11:54:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021501050] [2024-06-14 11:54:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021501050] [2024-06-14 11:54:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021501050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:30,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727947980] [2024-06-14 11:54:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:30,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:30,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 108 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:30,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:30,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:30,997 INFO L124 PetriNetUnfolderBase]: 417/725 cut-off events. [2024-06-14 11:54:30,998 INFO L125 PetriNetUnfolderBase]: For 34204/34204 co-relation queries the response was YES. [2024-06-14 11:54:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 725 events. 417/725 cut-off events. For 34204/34204 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3046 event pairs, 66 based on Foata normal form. 3/727 useless extension candidates. Maximal degree in co-relation 4251. Up to 590 conditions per place. [2024-06-14 11:54:31,002 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 97 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-14 11:54:31,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 1274 flow [2024-06-14 11:54:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:54:31,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 11:54:31,003 INFO L175 Difference]: Start difference. First operand has 133 places, 108 transitions, 880 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:54:31,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 1274 flow [2024-06-14 11:54:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 1202 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:31,047 INFO L231 Difference]: Finished difference. Result has 132 places, 110 transitions, 887 flow [2024-06-14 11:54:31,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=132, PETRI_TRANSITIONS=110} [2024-06-14 11:54:31,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 100 predicate places. [2024-06-14 11:54:31,048 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 110 transitions, 887 flow [2024-06-14 11:54:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:31,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:31,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:31,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:54:31,048 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:31,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2059212065, now seen corresponding path program 1 times [2024-06-14 11:54:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757859151] [2024-06-14 11:54:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757859151] [2024-06-14 11:54:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757859151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:31,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971392566] [2024-06-14 11:54:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:32,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:32,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 110 transitions, 887 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:32,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:32,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:32,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:32,365 INFO L124 PetriNetUnfolderBase]: 413/719 cut-off events. [2024-06-14 11:54:32,365 INFO L125 PetriNetUnfolderBase]: For 33411/33411 co-relation queries the response was YES. [2024-06-14 11:54:32,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 719 events. 413/719 cut-off events. For 33411/33411 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2999 event pairs, 80 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4238. Up to 682 conditions per place. [2024-06-14 11:54:32,369 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-14 11:54:32,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 124 transitions, 1177 flow [2024-06-14 11:54:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 11:54:32,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-14 11:54:32,370 INFO L175 Difference]: Start difference. First operand has 132 places, 110 transitions, 887 flow. Second operand 9 states and 101 transitions. [2024-06-14 11:54:32,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 124 transitions, 1177 flow [2024-06-14 11:54:32,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 1067 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:32,414 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 834 flow [2024-06-14 11:54:32,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-06-14 11:54:32,415 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 11:54:32,415 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 834 flow [2024-06-14 11:54:32,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:32,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:32,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:32,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:54:32,417 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:32,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1763753607, now seen corresponding path program 9 times [2024-06-14 11:54:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:32,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227830749] [2024-06-14 11:54:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227830749] [2024-06-14 11:54:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227830749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680950290] [2024-06-14 11:54:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:33,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:33,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 834 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:33,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:33,475 INFO L124 PetriNetUnfolderBase]: 407/710 cut-off events. [2024-06-14 11:54:33,475 INFO L125 PetriNetUnfolderBase]: For 32769/32769 co-relation queries the response was YES. [2024-06-14 11:54:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 710 events. 407/710 cut-off events. For 32769/32769 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2992 event pairs, 63 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 4027. Up to 580 conditions per place. [2024-06-14 11:54:33,479 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-14 11:54:33,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1220 flow [2024-06-14 11:54:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:54:33,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-14 11:54:33,479 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 834 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:54:33,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1220 flow [2024-06-14 11:54:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1175 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:33,530 INFO L231 Difference]: Finished difference. Result has 135 places, 112 transitions, 848 flow [2024-06-14 11:54:33,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=135, PETRI_TRANSITIONS=112} [2024-06-14 11:54:33,530 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-14 11:54:33,530 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 112 transitions, 848 flow [2024-06-14 11:54:33,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:33,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:33,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:54:33,531 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:33,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2049084117, now seen corresponding path program 10 times [2024-06-14 11:54:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:33,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065236168] [2024-06-14 11:54:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:34,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065236168] [2024-06-14 11:54:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065236168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580239016] [2024-06-14 11:54:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:34,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:34,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:34,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 112 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:34,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:34,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:34,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:34,567 INFO L124 PetriNetUnfolderBase]: 401/701 cut-off events. [2024-06-14 11:54:34,567 INFO L125 PetriNetUnfolderBase]: For 31740/31740 co-relation queries the response was YES. [2024-06-14 11:54:34,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 701 events. 401/701 cut-off events. For 31740/31740 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2939 event pairs, 75 based on Foata normal form. 3/703 useless extension candidates. Maximal degree in co-relation 3938. Up to 651 conditions per place. [2024-06-14 11:54:34,570 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2024-06-14 11:54:34,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 127 transitions, 1136 flow [2024-06-14 11:54:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 11:54:34,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-14 11:54:34,571 INFO L175 Difference]: Start difference. First operand has 135 places, 112 transitions, 848 flow. Second operand 9 states and 104 transitions. [2024-06-14 11:54:34,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 127 transitions, 1136 flow [2024-06-14 11:54:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 127 transitions, 1083 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:34,617 INFO L231 Difference]: Finished difference. Result has 137 places, 112 transitions, 828 flow [2024-06-14 11:54:34,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2024-06-14 11:54:34,618 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-14 11:54:34,618 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 828 flow [2024-06-14 11:54:34,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:34,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:34,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:54:34,619 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:34,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:34,619 INFO L85 PathProgramCache]: Analyzing trace with hash 907042122, now seen corresponding path program 1 times [2024-06-14 11:54:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580524763] [2024-06-14 11:54:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580524763] [2024-06-14 11:54:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580524763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:35,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:35,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:35,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305759342] [2024-06-14 11:54:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:35,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:35,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:35,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 828 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:35,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:35,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:35,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:36,012 INFO L124 PetriNetUnfolderBase]: 404/706 cut-off events. [2024-06-14 11:54:36,013 INFO L125 PetriNetUnfolderBase]: For 31242/31242 co-relation queries the response was YES. [2024-06-14 11:54:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 706 events. 404/706 cut-off events. For 31242/31242 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2967 event pairs, 82 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 3969. Up to 644 conditions per place. [2024-06-14 11:54:36,017 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-14 11:54:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 1186 flow [2024-06-14 11:54:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:36,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:54:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:54:36,018 INFO L175 Difference]: Start difference. First operand has 137 places, 112 transitions, 828 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:54:36,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 1186 flow [2024-06-14 11:54:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 1125 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:36,071 INFO L231 Difference]: Finished difference. Result has 138 places, 114 transitions, 831 flow [2024-06-14 11:54:36,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=831, PETRI_PLACES=138, PETRI_TRANSITIONS=114} [2024-06-14 11:54:36,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-14 11:54:36,071 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 114 transitions, 831 flow [2024-06-14 11:54:36,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:36,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:36,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:36,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:54:36,072 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:36,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1950521727, now seen corresponding path program 1 times [2024-06-14 11:54:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:36,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977440544] [2024-06-14 11:54:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:36,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:36,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977440544] [2024-06-14 11:54:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977440544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:36,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982131002] [2024-06-14 11:54:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:36,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:37,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:37,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 114 transitions, 831 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:37,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:37,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:37,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:37,315 INFO L124 PetriNetUnfolderBase]: 413/721 cut-off events. [2024-06-14 11:54:37,315 INFO L125 PetriNetUnfolderBase]: For 34641/34641 co-relation queries the response was YES. [2024-06-14 11:54:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 721 events. 413/721 cut-off events. For 34641/34641 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3041 event pairs, 81 based on Foata normal form. 3/723 useless extension candidates. Maximal degree in co-relation 4066. Up to 664 conditions per place. [2024-06-14 11:54:37,320 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 16 changer transitions 0/140 dead transitions. [2024-06-14 11:54:37,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 1189 flow [2024-06-14 11:54:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:54:37,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 11:54:37,321 INFO L175 Difference]: Start difference. First operand has 138 places, 114 transitions, 831 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:54:37,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 1189 flow [2024-06-14 11:54:37,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 140 transitions, 1143 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:37,384 INFO L231 Difference]: Finished difference. Result has 139 places, 116 transitions, 848 flow [2024-06-14 11:54:37,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=848, PETRI_PLACES=139, PETRI_TRANSITIONS=116} [2024-06-14 11:54:37,384 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2024-06-14 11:54:37,384 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 116 transitions, 848 flow [2024-06-14 11:54:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:37,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:37,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:54:37,385 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:37,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:37,385 INFO L85 PathProgramCache]: Analyzing trace with hash 910851557, now seen corresponding path program 2 times [2024-06-14 11:54:37,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:37,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894939353] [2024-06-14 11:54:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:37,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894939353] [2024-06-14 11:54:38,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894939353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:38,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:38,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717160051] [2024-06-14 11:54:38,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:38,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:38,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:38,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:38,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:38,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 116 transitions, 848 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:38,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:38,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:38,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:38,565 INFO L124 PetriNetUnfolderBase]: 447/776 cut-off events. [2024-06-14 11:54:38,565 INFO L125 PetriNetUnfolderBase]: For 41708/41708 co-relation queries the response was YES. [2024-06-14 11:54:38,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 776 events. 447/776 cut-off events. For 41708/41708 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3354 event pairs, 56 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 4607. Up to 368 conditions per place. [2024-06-14 11:54:38,570 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 93 selfloop transitions, 60 changer transitions 0/155 dead transitions. [2024-06-14 11:54:38,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 155 transitions, 1502 flow [2024-06-14 11:54:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-14 11:54:38,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-14 11:54:38,571 INFO L175 Difference]: Start difference. First operand has 139 places, 116 transitions, 848 flow. Second operand 10 states and 142 transitions. [2024-06-14 11:54:38,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 155 transitions, 1502 flow [2024-06-14 11:54:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 1455 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:38,639 INFO L231 Difference]: Finished difference. Result has 141 places, 122 transitions, 1008 flow [2024-06-14 11:54:38,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1008, PETRI_PLACES=141, PETRI_TRANSITIONS=122} [2024-06-14 11:54:38,640 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-14 11:54:38,640 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 122 transitions, 1008 flow [2024-06-14 11:54:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:38,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:38,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:54:38,641 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1571462038, now seen corresponding path program 2 times [2024-06-14 11:54:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526708585] [2024-06-14 11:54:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526708585] [2024-06-14 11:54:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526708585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:39,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774900577] [2024-06-14 11:54:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:39,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:39,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 122 transitions, 1008 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:39,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:39,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:39,852 INFO L124 PetriNetUnfolderBase]: 450/781 cut-off events. [2024-06-14 11:54:39,852 INFO L125 PetriNetUnfolderBase]: For 41613/41613 co-relation queries the response was YES. [2024-06-14 11:54:39,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 781 events. 450/781 cut-off events. For 41613/41613 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3348 event pairs, 97 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 4823. Up to 688 conditions per place. [2024-06-14 11:54:39,856 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 104 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2024-06-14 11:54:39,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 143 transitions, 1358 flow [2024-06-14 11:54:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:54:39,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-14 11:54:39,858 INFO L175 Difference]: Start difference. First operand has 141 places, 122 transitions, 1008 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:54:39,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 143 transitions, 1358 flow [2024-06-14 11:54:39,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1277 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:39,946 INFO L231 Difference]: Finished difference. Result has 146 places, 124 transitions, 1032 flow [2024-06-14 11:54:39,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1032, PETRI_PLACES=146, PETRI_TRANSITIONS=124} [2024-06-14 11:54:39,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-14 11:54:39,947 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 124 transitions, 1032 flow [2024-06-14 11:54:39,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:39,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:39,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:39,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:54:39,947 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:39,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1950371997, now seen corresponding path program 3 times [2024-06-14 11:54:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:39,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268773140] [2024-06-14 11:54:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268773140] [2024-06-14 11:54:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268773140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370562868] [2024-06-14 11:54:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:40,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:40,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:40,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:40,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 124 transitions, 1032 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:40,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:40,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:40,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:41,055 INFO L124 PetriNetUnfolderBase]: 444/772 cut-off events. [2024-06-14 11:54:41,056 INFO L125 PetriNetUnfolderBase]: For 41987/41987 co-relation queries the response was YES. [2024-06-14 11:54:41,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 772 events. 444/772 cut-off events. For 41987/41987 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3338 event pairs, 50 based on Foata normal form. 3/774 useless extension candidates. Maximal degree in co-relation 4696. Up to 369 conditions per place. [2024-06-14 11:54:41,060 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 91 selfloop transitions, 61 changer transitions 0/154 dead transitions. [2024-06-14 11:54:41,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 1510 flow [2024-06-14 11:54:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 11:54:41,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-14 11:54:41,062 INFO L175 Difference]: Start difference. First operand has 146 places, 124 transitions, 1032 flow. Second operand 10 states and 138 transitions. [2024-06-14 11:54:41,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 1510 flow [2024-06-14 11:54:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 154 transitions, 1407 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:41,137 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1056 flow [2024-06-14 11:54:41,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1056, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-14 11:54:41,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2024-06-14 11:54:41,137 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1056 flow [2024-06-14 11:54:41,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:41,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:41,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:54:41,138 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:41,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1054949477, now seen corresponding path program 4 times [2024-06-14 11:54:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168265955] [2024-06-14 11:54:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:41,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:41,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168265955] [2024-06-14 11:54:41,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168265955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:41,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:41,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:41,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121843485] [2024-06-14 11:54:41,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:41,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:41,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:42,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:42,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1056 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:42,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:42,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:42,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:42,391 INFO L124 PetriNetUnfolderBase]: 468/811 cut-off events. [2024-06-14 11:54:42,391 INFO L125 PetriNetUnfolderBase]: For 47796/47796 co-relation queries the response was YES. [2024-06-14 11:54:42,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 811 events. 468/811 cut-off events. For 47796/47796 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3556 event pairs, 70 based on Foata normal form. 3/813 useless extension candidates. Maximal degree in co-relation 5158. Up to 389 conditions per place. [2024-06-14 11:54:42,399 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 94 selfloop transitions, 60 changer transitions 0/156 dead transitions. [2024-06-14 11:54:42,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 156 transitions, 1692 flow [2024-06-14 11:54:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 11:54:42,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 11:54:42,401 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1056 flow. Second operand 10 states and 137 transitions. [2024-06-14 11:54:42,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 156 transitions, 1692 flow [2024-06-14 11:54:42,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 156 transitions, 1557 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:42,466 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1106 flow [2024-06-14 11:54:42,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1106, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-14 11:54:42,467 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 117 predicate places. [2024-06-14 11:54:42,467 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1106 flow [2024-06-14 11:54:42,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:42,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:42,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:42,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:54:42,468 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:42,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1054747667, now seen corresponding path program 5 times [2024-06-14 11:54:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418068458] [2024-06-14 11:54:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418068458] [2024-06-14 11:54:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418068458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:43,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182136264] [2024-06-14 11:54:43,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:43,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:43,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:43,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1106 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:43,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:43,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:43,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:43,720 INFO L124 PetriNetUnfolderBase]: 477/826 cut-off events. [2024-06-14 11:54:43,721 INFO L125 PetriNetUnfolderBase]: For 49871/49871 co-relation queries the response was YES. [2024-06-14 11:54:43,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 826 events. 477/826 cut-off events. For 49871/49871 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3644 event pairs, 66 based on Foata normal form. 3/828 useless extension candidates. Maximal degree in co-relation 5243. Up to 397 conditions per place. [2024-06-14 11:54:43,728 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 99 selfloop transitions, 59 changer transitions 0/160 dead transitions. [2024-06-14 11:54:43,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 1730 flow [2024-06-14 11:54:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 11:54:43,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-14 11:54:43,730 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1106 flow. Second operand 10 states and 141 transitions. [2024-06-14 11:54:43,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 1730 flow [2024-06-14 11:54:43,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 160 transitions, 1633 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:43,828 INFO L231 Difference]: Finished difference. Result has 153 places, 130 transitions, 1162 flow [2024-06-14 11:54:43,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1162, PETRI_PLACES=153, PETRI_TRANSITIONS=130} [2024-06-14 11:54:43,828 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 121 predicate places. [2024-06-14 11:54:43,828 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 130 transitions, 1162 flow [2024-06-14 11:54:43,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:43,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:43,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:43,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:54:43,829 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:43,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1870587909, now seen corresponding path program 6 times [2024-06-14 11:54:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268322273] [2024-06-14 11:54:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:43,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:44,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268322273] [2024-06-14 11:54:44,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268322273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:44,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:44,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:44,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744533665] [2024-06-14 11:54:44,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:44,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:44,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:44,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 130 transitions, 1162 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:44,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:44,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:44,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:44,970 INFO L124 PetriNetUnfolderBase]: 471/817 cut-off events. [2024-06-14 11:54:44,970 INFO L125 PetriNetUnfolderBase]: For 48130/48130 co-relation queries the response was YES. [2024-06-14 11:54:44,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 817 events. 471/817 cut-off events. For 48130/48130 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3606 event pairs, 64 based on Foata normal form. 3/819 useless extension candidates. Maximal degree in co-relation 5083. Up to 393 conditions per place. [2024-06-14 11:54:44,975 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 97 selfloop transitions, 60 changer transitions 0/159 dead transitions. [2024-06-14 11:54:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 159 transitions, 1654 flow [2024-06-14 11:54:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 11:54:44,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 11:54:44,975 INFO L175 Difference]: Start difference. First operand has 153 places, 130 transitions, 1162 flow. Second operand 10 states and 139 transitions. [2024-06-14 11:54:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 159 transitions, 1654 flow [2024-06-14 11:54:45,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 159 transitions, 1495 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:45,040 INFO L231 Difference]: Finished difference. Result has 155 places, 130 transitions, 1128 flow [2024-06-14 11:54:45,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2024-06-14 11:54:45,041 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-14 11:54:45,041 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 1128 flow [2024-06-14 11:54:45,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:45,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:54:45,042 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:45,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1870587754, now seen corresponding path program 3 times [2024-06-14 11:54:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627515987] [2024-06-14 11:54:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627515987] [2024-06-14 11:54:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627515987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:45,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:45,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140626959] [2024-06-14 11:54:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:46,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 1128 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:46,288 INFO L124 PetriNetUnfolderBase]: 474/822 cut-off events. [2024-06-14 11:54:46,288 INFO L125 PetriNetUnfolderBase]: For 46904/46904 co-relation queries the response was YES. [2024-06-14 11:54:46,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 822 events. 474/822 cut-off events. For 46904/46904 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3613 event pairs, 99 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 5106. Up to 729 conditions per place. [2024-06-14 11:54:46,294 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 35 changer transitions 0/148 dead transitions. [2024-06-14 11:54:46,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 1484 flow [2024-06-14 11:54:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:54:46,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:54:46,295 INFO L175 Difference]: Start difference. First operand has 155 places, 130 transitions, 1128 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:54:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 1484 flow [2024-06-14 11:54:46,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1359 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:46,381 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1108 flow [2024-06-14 11:54:46,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1108, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-14 11:54:46,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-14 11:54:46,382 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1108 flow [2024-06-14 11:54:46,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:46,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:46,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:46,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:54:46,382 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:46,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1982671877, now seen corresponding path program 7 times [2024-06-14 11:54:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671700898] [2024-06-14 11:54:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:47,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:47,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671700898] [2024-06-14 11:54:47,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671700898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:47,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:47,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:47,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967116997] [2024-06-14 11:54:47,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:47,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:47,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:47,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:47,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:47,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:47,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1108 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:47,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:47,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:47,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:47,463 INFO L124 PetriNetUnfolderBase]: 498/861 cut-off events. [2024-06-14 11:54:47,463 INFO L125 PetriNetUnfolderBase]: For 55633/55633 co-relation queries the response was YES. [2024-06-14 11:54:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5485 conditions, 861 events. 498/861 cut-off events. For 55633/55633 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3815 event pairs, 92 based on Foata normal form. 3/863 useless extension candidates. Maximal degree in co-relation 5407. Up to 418 conditions per place. [2024-06-14 11:54:47,468 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 98 selfloop transitions, 63 changer transitions 0/163 dead transitions. [2024-06-14 11:54:47,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 1768 flow [2024-06-14 11:54:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 11:54:47,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-14 11:54:47,469 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1108 flow. Second operand 10 states and 138 transitions. [2024-06-14 11:54:47,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 1768 flow [2024-06-14 11:54:47,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 163 transitions, 1679 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:47,550 INFO L231 Difference]: Finished difference. Result has 158 places, 136 transitions, 1206 flow [2024-06-14 11:54:47,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1206, PETRI_PLACES=158, PETRI_TRANSITIONS=136} [2024-06-14 11:54:47,551 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-14 11:54:47,551 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 136 transitions, 1206 flow [2024-06-14 11:54:47,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:47,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:47,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:54:47,551 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:47,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1743441510, now seen corresponding path program 1 times [2024-06-14 11:54:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:47,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243937824] [2024-06-14 11:54:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:47,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243937824] [2024-06-14 11:54:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243937824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:48,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978605904] [2024-06-14 11:54:48,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:48,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:48,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 136 transitions, 1206 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:48,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:48,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:48,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:49,296 INFO L124 PetriNetUnfolderBase]: 447/796 cut-off events. [2024-06-14 11:54:49,296 INFO L125 PetriNetUnfolderBase]: For 58810/58819 co-relation queries the response was YES. [2024-06-14 11:54:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 796 events. 447/796 cut-off events. For 58810/58819 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3636 event pairs, 69 based on Foata normal form. 5/788 useless extension candidates. Maximal degree in co-relation 5301. Up to 696 conditions per place. [2024-06-14 11:54:49,303 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 121 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-14 11:54:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 1550 flow [2024-06-14 11:54:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 11:54:49,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 11:54:49,304 INFO L175 Difference]: Start difference. First operand has 158 places, 136 transitions, 1206 flow. Second operand 9 states and 116 transitions. [2024-06-14 11:54:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 1550 flow [2024-06-14 11:54:49,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 1433 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:49,396 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 1164 flow [2024-06-14 11:54:49,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2024-06-14 11:54:49,397 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-14 11:54:49,397 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 1164 flow [2024-06-14 11:54:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:49,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:49,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:49,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:54:49,397 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:49,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1982671722, now seen corresponding path program 4 times [2024-06-14 11:54:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060907618] [2024-06-14 11:54:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:49,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060907618] [2024-06-14 11:54:50,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060907618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:50,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:50,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948930771] [2024-06-14 11:54:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:50,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:50,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 1164 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:50,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:50,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:50,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:50,632 INFO L124 PetriNetUnfolderBase]: 505/874 cut-off events. [2024-06-14 11:54:50,632 INFO L125 PetriNetUnfolderBase]: For 56908/56908 co-relation queries the response was YES. [2024-06-14 11:54:50,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 874 events. 505/874 cut-off events. For 56908/56908 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3892 event pairs, 105 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 5587. Up to 781 conditions per place. [2024-06-14 11:54:50,638 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 34 changer transitions 0/154 dead transitions. [2024-06-14 11:54:50,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 1528 flow [2024-06-14 11:54:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:54:50,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-14 11:54:50,639 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 1164 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:54:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 1528 flow [2024-06-14 11:54:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 154 transitions, 1482 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:50,745 INFO L231 Difference]: Finished difference. Result has 166 places, 141 transitions, 1225 flow [2024-06-14 11:54:50,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1225, PETRI_PLACES=166, PETRI_TRANSITIONS=141} [2024-06-14 11:54:50,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-14 11:54:50,746 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 141 transitions, 1225 flow [2024-06-14 11:54:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:50,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:50,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:50,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:54:50,746 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:50,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1372154513, now seen corresponding path program 8 times [2024-06-14 11:54:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:50,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864461497] [2024-06-14 11:54:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864461497] [2024-06-14 11:54:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864461497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:51,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:51,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58221771] [2024-06-14 11:54:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:51,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:51,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 141 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:51,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:51,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:51,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:51,888 INFO L124 PetriNetUnfolderBase]: 514/889 cut-off events. [2024-06-14 11:54:51,888 INFO L125 PetriNetUnfolderBase]: For 62197/62197 co-relation queries the response was YES. [2024-06-14 11:54:51,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 889 events. 514/889 cut-off events. For 62197/62197 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3974 event pairs, 92 based on Foata normal form. 3/891 useless extension candidates. Maximal degree in co-relation 5730. Up to 439 conditions per place. [2024-06-14 11:54:51,897 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 104 selfloop transitions, 64 changer transitions 0/170 dead transitions. [2024-06-14 11:54:51,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 170 transitions, 1895 flow [2024-06-14 11:54:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 11:54:51,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 11:54:51,899 INFO L175 Difference]: Start difference. First operand has 166 places, 141 transitions, 1225 flow. Second operand 10 states and 139 transitions. [2024-06-14 11:54:51,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 170 transitions, 1895 flow [2024-06-14 11:54:52,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1804 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:52,003 INFO L231 Difference]: Finished difference. Result has 168 places, 143 transitions, 1295 flow [2024-06-14 11:54:52,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1295, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2024-06-14 11:54:52,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2024-06-14 11:54:52,004 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 1295 flow [2024-06-14 11:54:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:52,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:52,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:54:52,004 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:52,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1371952703, now seen corresponding path program 9 times [2024-06-14 11:54:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:52,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174561796] [2024-06-14 11:54:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174561796] [2024-06-14 11:54:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174561796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:52,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:52,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990588523] [2024-06-14 11:54:52,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:52,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:52,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:52,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:52,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:52,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:53,159 INFO L124 PetriNetUnfolderBase]: 523/904 cut-off events. [2024-06-14 11:54:53,160 INFO L125 PetriNetUnfolderBase]: For 64892/64892 co-relation queries the response was YES. [2024-06-14 11:54:53,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 904 events. 523/904 cut-off events. For 64892/64892 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4063 event pairs, 96 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 5954. Up to 447 conditions per place. [2024-06-14 11:54:53,166 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 105 selfloop transitions, 65 changer transitions 0/172 dead transitions. [2024-06-14 11:54:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 172 transitions, 1977 flow [2024-06-14 11:54:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-14 11:54:53,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:54:53,167 INFO L175 Difference]: Start difference. First operand has 168 places, 143 transitions, 1295 flow. Second operand 10 states and 140 transitions. [2024-06-14 11:54:53,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 172 transitions, 1977 flow [2024-06-14 11:54:53,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 172 transitions, 1844 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:53,279 INFO L231 Difference]: Finished difference. Result has 171 places, 145 transitions, 1329 flow [2024-06-14 11:54:53,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1329, PETRI_PLACES=171, PETRI_TRANSITIONS=145} [2024-06-14 11:54:53,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-14 11:54:53,280 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 145 transitions, 1329 flow [2024-06-14 11:54:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:53,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:53,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:53,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:54:53,280 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:53,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1364802863, now seen corresponding path program 10 times [2024-06-14 11:54:53,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:53,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700027197] [2024-06-14 11:54:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:53,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:54,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700027197] [2024-06-14 11:54:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700027197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:54,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5219251] [2024-06-14 11:54:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:54,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:54,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:54,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 145 transitions, 1329 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:54,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:54,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:54,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:54,514 INFO L124 PetriNetUnfolderBase]: 517/895 cut-off events. [2024-06-14 11:54:54,514 INFO L125 PetriNetUnfolderBase]: For 62000/62000 co-relation queries the response was YES. [2024-06-14 11:54:54,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 895 events. 517/895 cut-off events. For 62000/62000 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4039 event pairs, 104 based on Foata normal form. 3/897 useless extension candidates. Maximal degree in co-relation 5762. Up to 443 conditions per place. [2024-06-14 11:54:54,524 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 96 selfloop transitions, 71 changer transitions 0/169 dead transitions. [2024-06-14 11:54:54,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 169 transitions, 1851 flow [2024-06-14 11:54:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:54:54,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 11:54:54,526 INFO L175 Difference]: Start difference. First operand has 171 places, 145 transitions, 1329 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:54:54,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 169 transitions, 1851 flow [2024-06-14 11:54:54,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1705 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:54,642 INFO L231 Difference]: Finished difference. Result has 174 places, 145 transitions, 1330 flow [2024-06-14 11:54:54,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1330, PETRI_PLACES=174, PETRI_TRANSITIONS=145} [2024-06-14 11:54:54,642 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 142 predicate places. [2024-06-14 11:54:54,642 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 145 transitions, 1330 flow [2024-06-14 11:54:54,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:54,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:54,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:54:54,643 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2111647277, now seen corresponding path program 11 times [2024-06-14 11:54:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694236639] [2024-06-14 11:54:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:54,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:55,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:55,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694236639] [2024-06-14 11:54:55,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694236639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:55,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798200931] [2024-06-14 11:54:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:55,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:55,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:55,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:55,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 145 transitions, 1330 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:55,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:55,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:55,835 INFO L124 PetriNetUnfolderBase]: 541/934 cut-off events. [2024-06-14 11:54:55,835 INFO L125 PetriNetUnfolderBase]: For 69462/69462 co-relation queries the response was YES. [2024-06-14 11:54:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 934 events. 541/934 cut-off events. For 69462/69462 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4254 event pairs, 106 based on Foata normal form. 3/936 useless extension candidates. Maximal degree in co-relation 6161. Up to 749 conditions per place. [2024-06-14 11:54:55,844 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 139 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-14 11:54:55,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 171 transitions, 2038 flow [2024-06-14 11:54:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:54:55,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:54:55,845 INFO L175 Difference]: Start difference. First operand has 174 places, 145 transitions, 1330 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:54:55,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 171 transitions, 2038 flow [2024-06-14 11:54:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 171 transitions, 1854 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:55,968 INFO L231 Difference]: Finished difference. Result has 173 places, 149 transitions, 1279 flow [2024-06-14 11:54:55,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=173, PETRI_TRANSITIONS=149} [2024-06-14 11:54:55,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-14 11:54:55,969 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 149 transitions, 1279 flow [2024-06-14 11:54:55,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:55,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:55,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:54:55,970 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:55,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -620806904, now seen corresponding path program 2 times [2024-06-14 11:54:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679369753] [2024-06-14 11:54:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:57,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679369753] [2024-06-14 11:54:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679369753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970846474] [2024-06-14 11:54:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:57,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:57,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 149 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:57,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:57,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:57,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:57,502 INFO L124 PetriNetUnfolderBase]: 490/865 cut-off events. [2024-06-14 11:54:57,502 INFO L125 PetriNetUnfolderBase]: For 75865/75872 co-relation queries the response was YES. [2024-06-14 11:54:57,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 865 events. 490/865 cut-off events. For 75865/75872 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4062 event pairs, 83 based on Foata normal form. 7/859 useless extension candidates. Maximal degree in co-relation 5755. Up to 790 conditions per place. [2024-06-14 11:54:57,509 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 135 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2024-06-14 11:54:57,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1641 flow [2024-06-14 11:54:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:54:57,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 11:54:57,510 INFO L175 Difference]: Start difference. First operand has 173 places, 149 transitions, 1279 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:54:57,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1641 flow [2024-06-14 11:54:57,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1562 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:57,627 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 1271 flow [2024-06-14 11:54:57,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1271, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2024-06-14 11:54:57,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2024-06-14 11:54:57,628 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 1271 flow [2024-06-14 11:54:57,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:57,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:57,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:54:57,628 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:57,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1158413851, now seen corresponding path program 12 times [2024-06-14 11:54:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392380619] [2024-06-14 11:54:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:57,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392380619] [2024-06-14 11:54:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392380619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:58,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207635518] [2024-06-14 11:54:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:58,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:58,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:58,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:58,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:58,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:58,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:58,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:58,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:58,852 INFO L124 PetriNetUnfolderBase]: 569/981 cut-off events. [2024-06-14 11:54:58,853 INFO L125 PetriNetUnfolderBase]: For 79517/79517 co-relation queries the response was YES. [2024-06-14 11:54:58,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 981 events. 569/981 cut-off events. For 79517/79517 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4533 event pairs, 86 based on Foata normal form. 3/983 useless extension candidates. Maximal degree in co-relation 6469. Up to 777 conditions per place. [2024-06-14 11:54:58,860 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 138 selfloop transitions, 38 changer transitions 0/178 dead transitions. [2024-06-14 11:54:58,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 178 transitions, 1999 flow [2024-06-14 11:54:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:58,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:54:58,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:54:58,861 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 1271 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:54:58,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 178 transitions, 1999 flow [2024-06-14 11:54:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 1957 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:59,002 INFO L231 Difference]: Finished difference. Result has 180 places, 156 transitions, 1366 flow [2024-06-14 11:54:59,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1366, PETRI_PLACES=180, PETRI_TRANSITIONS=156} [2024-06-14 11:54:59,003 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-14 11:54:59,003 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 156 transitions, 1366 flow [2024-06-14 11:54:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:59,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:59,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:54:59,003 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:59,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1158419586, now seen corresponding path program 5 times [2024-06-14 11:54:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:59,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286695844] [2024-06-14 11:54:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286695844] [2024-06-14 11:54:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286695844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:59,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:59,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:54:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535337258] [2024-06-14 11:54:59,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:54:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:54:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:54:59,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:54:59,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 156 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:59,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:59,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:54:59,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:00,240 INFO L124 PetriNetUnfolderBase]: 567/978 cut-off events. [2024-06-14 11:55:00,240 INFO L125 PetriNetUnfolderBase]: For 76640/76640 co-relation queries the response was YES. [2024-06-14 11:55:00,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 978 events. 567/978 cut-off events. For 76640/76640 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4536 event pairs, 122 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 6503. Up to 951 conditions per place. [2024-06-14 11:55:00,248 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 16 changer transitions 0/168 dead transitions. [2024-06-14 11:55:00,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 1754 flow [2024-06-14 11:55:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 11:55:00,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-14 11:55:00,249 INFO L175 Difference]: Start difference. First operand has 180 places, 156 transitions, 1366 flow. Second operand 10 states and 107 transitions. [2024-06-14 11:55:00,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 1754 flow [2024-06-14 11:55:00,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 168 transitions, 1594 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:00,386 INFO L231 Difference]: Finished difference. Result has 182 places, 158 transitions, 1281 flow [2024-06-14 11:55:00,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1281, PETRI_PLACES=182, PETRI_TRANSITIONS=158} [2024-06-14 11:55:00,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-14 11:55:00,386 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 158 transitions, 1281 flow [2024-06-14 11:55:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:55:00,387 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:00,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -628441181, now seen corresponding path program 13 times [2024-06-14 11:55:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691892398] [2024-06-14 11:55:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691892398] [2024-06-14 11:55:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691892398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:01,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:01,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242022493] [2024-06-14 11:55:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:01,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:01,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 158 transitions, 1281 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:01,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:01,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:01,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:01,512 INFO L124 PetriNetUnfolderBase]: 561/969 cut-off events. [2024-06-14 11:55:01,512 INFO L125 PetriNetUnfolderBase]: For 76251/76251 co-relation queries the response was YES. [2024-06-14 11:55:01,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6258 conditions, 969 events. 561/969 cut-off events. For 76251/76251 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4476 event pairs, 84 based on Foata normal form. 3/971 useless extension candidates. Maximal degree in co-relation 6168. Up to 770 conditions per place. [2024-06-14 11:55:01,519 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 136 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-14 11:55:01,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 179 transitions, 1835 flow [2024-06-14 11:55:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:55:01,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:55:01,520 INFO L175 Difference]: Start difference. First operand has 182 places, 158 transitions, 1281 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:55:01,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 179 transitions, 1835 flow [2024-06-14 11:55:01,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 179 transitions, 1762 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:01,654 INFO L231 Difference]: Finished difference. Result has 184 places, 158 transitions, 1295 flow [2024-06-14 11:55:01,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1295, PETRI_PLACES=184, PETRI_TRANSITIONS=158} [2024-06-14 11:55:01,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-14 11:55:01,655 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 158 transitions, 1295 flow [2024-06-14 11:55:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:01,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:01,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:01,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:55:01,656 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:01,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash -902623776, now seen corresponding path program 3 times [2024-06-14 11:55:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:01,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234905190] [2024-06-14 11:55:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:02,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:02,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234905190] [2024-06-14 11:55:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234905190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:02,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89222801] [2024-06-14 11:55:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:02,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:02,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 158 transitions, 1295 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:02,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:02,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:02,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:03,135 INFO L124 PetriNetUnfolderBase]: 510/900 cut-off events. [2024-06-14 11:55:03,135 INFO L125 PetriNetUnfolderBase]: For 83518/83525 co-relation queries the response was YES. [2024-06-14 11:55:03,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6081 conditions, 900 events. 510/900 cut-off events. For 83518/83525 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4313 event pairs, 87 based on Foata normal form. 7/894 useless extension candidates. Maximal degree in co-relation 5990. Up to 837 conditions per place. [2024-06-14 11:55:03,141 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 145 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2024-06-14 11:55:03,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 1666 flow [2024-06-14 11:55:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:55:03,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-14 11:55:03,142 INFO L175 Difference]: Start difference. First operand has 184 places, 158 transitions, 1295 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:55:03,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 1666 flow [2024-06-14 11:55:03,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 172 transitions, 1588 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:03,312 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1285 flow [2024-06-14 11:55:03,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1285, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-14 11:55:03,312 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-14 11:55:03,312 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1285 flow [2024-06-14 11:55:03,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:03,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:55:03,313 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:03,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash -47904406, now seen corresponding path program 4 times [2024-06-14 11:55:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943864530] [2024-06-14 11:55:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:04,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:04,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943864530] [2024-06-14 11:55:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943864530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:04,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:04,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901576499] [2024-06-14 11:55:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:04,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:04,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:04,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:04,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1285 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:04,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:04,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:04,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:04,829 INFO L124 PetriNetUnfolderBase]: 514/910 cut-off events. [2024-06-14 11:55:04,829 INFO L125 PetriNetUnfolderBase]: For 86151/86156 co-relation queries the response was YES. [2024-06-14 11:55:04,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 910 events. 514/910 cut-off events. For 86151/86156 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4337 event pairs, 83 based on Foata normal form. 7/906 useless extension candidates. Maximal degree in co-relation 6066. Up to 840 conditions per place. [2024-06-14 11:55:04,835 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 147 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2024-06-14 11:55:04,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 174 transitions, 1647 flow [2024-06-14 11:55:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:55:04,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:55:04,836 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1285 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:55:04,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 174 transitions, 1647 flow [2024-06-14 11:55:04,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 174 transitions, 1607 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:04,968 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1293 flow [2024-06-14 11:55:04,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1293, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-14 11:55:04,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-14 11:55:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1293 flow [2024-06-14 11:55:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:04,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:55:04,969 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:04,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -628233791, now seen corresponding path program 14 times [2024-06-14 11:55:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167626320] [2024-06-14 11:55:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:05,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:05,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167626320] [2024-06-14 11:55:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167626320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:05,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:05,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:05,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890174587] [2024-06-14 11:55:05,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:05,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:05,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:05,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:05,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:05,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1293 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:05,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:05,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:05,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:06,158 INFO L124 PetriNetUnfolderBase]: 563/976 cut-off events. [2024-06-14 11:55:06,159 INFO L125 PetriNetUnfolderBase]: For 77247/77247 co-relation queries the response was YES. [2024-06-14 11:55:06,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 976 events. 563/976 cut-off events. For 77247/77247 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4557 event pairs, 108 based on Foata normal form. 3/978 useless extension candidates. Maximal degree in co-relation 6161. Up to 782 conditions per place. [2024-06-14 11:55:06,164 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 143 selfloop transitions, 37 changer transitions 0/182 dead transitions. [2024-06-14 11:55:06,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 182 transitions, 1859 flow [2024-06-14 11:55:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:55:06,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:55:06,165 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1293 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:55:06,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 182 transitions, 1859 flow [2024-06-14 11:55:06,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 182 transitions, 1807 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:06,291 INFO L231 Difference]: Finished difference. Result has 192 places, 162 transitions, 1320 flow [2024-06-14 11:55:06,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=192, PETRI_TRANSITIONS=162} [2024-06-14 11:55:06,292 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-14 11:55:06,292 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 162 transitions, 1320 flow [2024-06-14 11:55:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:06,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:06,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:06,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:55:06,292 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:06,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -902900823, now seen corresponding path program 15 times [2024-06-14 11:55:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:06,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105289538] [2024-06-14 11:55:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105289538] [2024-06-14 11:55:07,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105289538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:07,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:07,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234180153] [2024-06-14 11:55:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:07,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:07,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 162 transitions, 1320 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:07,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:07,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:07,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:07,459 INFO L124 PetriNetUnfolderBase]: 557/967 cut-off events. [2024-06-14 11:55:07,459 INFO L125 PetriNetUnfolderBase]: For 72762/72762 co-relation queries the response was YES. [2024-06-14 11:55:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 967 events. 557/967 cut-off events. For 72762/72762 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4510 event pairs, 104 based on Foata normal form. 3/969 useless extension candidates. Maximal degree in co-relation 5980. Up to 904 conditions per place. [2024-06-14 11:55:07,467 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-06-14 11:55:07,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1734 flow [2024-06-14 11:55:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:55:07,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 11:55:07,468 INFO L175 Difference]: Start difference. First operand has 192 places, 162 transitions, 1320 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:55:07,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1734 flow [2024-06-14 11:55:07,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1650 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:07,603 INFO L231 Difference]: Finished difference. Result has 194 places, 162 transitions, 1275 flow [2024-06-14 11:55:07,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=194, PETRI_TRANSITIONS=162} [2024-06-14 11:55:07,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 11:55:07,604 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 162 transitions, 1275 flow [2024-06-14 11:55:07,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:07,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:07,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:07,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:55:07,604 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:07,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -363379936, now seen corresponding path program 5 times [2024-06-14 11:55:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835749746] [2024-06-14 11:55:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835749746] [2024-06-14 11:55:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835749746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:08,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990680755] [2024-06-14 11:55:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:08,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:08,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 162 transitions, 1275 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:08,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:08,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:08,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:09,234 INFO L124 PetriNetUnfolderBase]: 499/887 cut-off events. [2024-06-14 11:55:09,234 INFO L125 PetriNetUnfolderBase]: For 73449/73454 co-relation queries the response was YES. [2024-06-14 11:55:09,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5564 conditions, 887 events. 499/887 cut-off events. For 73449/73454 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4241 event pairs, 77 based on Foata normal form. 7/883 useless extension candidates. Maximal degree in co-relation 5468. Up to 817 conditions per place. [2024-06-14 11:55:09,239 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 12 changer transitions 0/174 dead transitions. [2024-06-14 11:55:09,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 174 transitions, 1621 flow [2024-06-14 11:55:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 11:55:09,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-14 11:55:09,240 INFO L175 Difference]: Start difference. First operand has 194 places, 162 transitions, 1275 flow. Second operand 9 states and 106 transitions. [2024-06-14 11:55:09,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 174 transitions, 1621 flow [2024-06-14 11:55:09,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 174 transitions, 1528 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:09,361 INFO L231 Difference]: Finished difference. Result has 191 places, 162 transitions, 1210 flow [2024-06-14 11:55:09,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=191, PETRI_TRANSITIONS=162} [2024-06-14 11:55:09,361 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-14 11:55:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 162 transitions, 1210 flow [2024-06-14 11:55:09,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:09,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:09,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:55:09,362 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:09,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -58956216, now seen corresponding path program 1 times [2024-06-14 11:55:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476299225] [2024-06-14 11:55:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:10,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:10,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476299225] [2024-06-14 11:55:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476299225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:10,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145396742] [2024-06-14 11:55:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:10,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:10,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:10,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:10,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 162 transitions, 1210 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:10,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:10,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:10,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:10,738 INFO L124 PetriNetUnfolderBase]: 561/974 cut-off events. [2024-06-14 11:55:10,738 INFO L125 PetriNetUnfolderBase]: For 67268/67268 co-relation queries the response was YES. [2024-06-14 11:55:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 974 events. 561/974 cut-off events. For 67268/67268 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4555 event pairs, 100 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 5717. Up to 934 conditions per place. [2024-06-14 11:55:10,748 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 165 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2024-06-14 11:55:10,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1654 flow [2024-06-14 11:55:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:55:10,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:55:10,749 INFO L175 Difference]: Start difference. First operand has 191 places, 162 transitions, 1210 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:55:10,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1654 flow [2024-06-14 11:55:10,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 183 transitions, 1592 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:10,901 INFO L231 Difference]: Finished difference. Result has 196 places, 170 transitions, 1264 flow [2024-06-14 11:55:10,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1264, PETRI_PLACES=196, PETRI_TRANSITIONS=170} [2024-06-14 11:55:10,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-14 11:55:10,901 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 170 transitions, 1264 flow [2024-06-14 11:55:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:10,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:10,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:55:10,902 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:10,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1946467028, now seen corresponding path program 1 times [2024-06-14 11:55:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233924779] [2024-06-14 11:55:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:11,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233924779] [2024-06-14 11:55:11,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233924779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:11,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:11,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563999671] [2024-06-14 11:55:11,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:12,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:12,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 170 transitions, 1264 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:12,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:12,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:12,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:12,377 INFO L124 PetriNetUnfolderBase]: 572/995 cut-off events. [2024-06-14 11:55:12,377 INFO L125 PetriNetUnfolderBase]: For 74311/74311 co-relation queries the response was YES. [2024-06-14 11:55:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 995 events. 572/995 cut-off events. For 74311/74311 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4677 event pairs, 86 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6140. Up to 898 conditions per place. [2024-06-14 11:55:12,384 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 20 changer transitions 0/202 dead transitions. [2024-06-14 11:55:12,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 202 transitions, 1924 flow [2024-06-14 11:55:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 11:55:12,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-14 11:55:12,385 INFO L175 Difference]: Start difference. First operand has 196 places, 170 transitions, 1264 flow. Second operand 12 states and 142 transitions. [2024-06-14 11:55:12,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 202 transitions, 1924 flow [2024-06-14 11:55:12,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 1855 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:12,545 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 1289 flow [2024-06-14 11:55:12,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1289, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2024-06-14 11:55:12,545 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-14 11:55:12,545 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 1289 flow [2024-06-14 11:55:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:12,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:12,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:12,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:55:12,546 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:12,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1869919888, now seen corresponding path program 1 times [2024-06-14 11:55:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722831379] [2024-06-14 11:55:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:13,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722831379] [2024-06-14 11:55:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722831379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434310236] [2024-06-14 11:55:13,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:13,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:13,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 1289 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:13,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:13,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:13,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:14,141 INFO L124 PetriNetUnfolderBase]: 581/1010 cut-off events. [2024-06-14 11:55:14,142 INFO L125 PetriNetUnfolderBase]: For 78700/78700 co-relation queries the response was YES. [2024-06-14 11:55:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 1010 events. 581/1010 cut-off events. For 78700/78700 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4787 event pairs, 102 based on Foata normal form. 3/1012 useless extension candidates. Maximal degree in co-relation 6202. Up to 926 conditions per place. [2024-06-14 11:55:14,150 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 181 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2024-06-14 11:55:14,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 206 transitions, 1825 flow [2024-06-14 11:55:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:55:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:55:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-14 11:55:14,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35664335664335667 [2024-06-14 11:55:14,152 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 1289 flow. Second operand 13 states and 153 transitions. [2024-06-14 11:55:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 206 transitions, 1825 flow [2024-06-14 11:55:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 1774 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:14,316 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 1339 flow [2024-06-14 11:55:14,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1339, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2024-06-14 11:55:14,317 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-14 11:55:14,317 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 1339 flow [2024-06-14 11:55:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:14,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:14,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:14,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:55:14,317 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:14,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1869919764, now seen corresponding path program 2 times [2024-06-14 11:55:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503004935] [2024-06-14 11:55:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:14,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503004935] [2024-06-14 11:55:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503004935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611365914] [2024-06-14 11:55:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:15,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:15,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:15,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 1339 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:15,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:15,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:15,942 INFO L124 PetriNetUnfolderBase]: 578/1005 cut-off events. [2024-06-14 11:55:15,942 INFO L125 PetriNetUnfolderBase]: For 73886/73886 co-relation queries the response was YES. [2024-06-14 11:55:15,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 1005 events. 578/1005 cut-off events. For 73886/73886 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4752 event pairs, 103 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6152. Up to 937 conditions per place. [2024-06-14 11:55:15,950 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 182 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-14 11:55:15,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 1809 flow [2024-06-14 11:55:15,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:55:15,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-14 11:55:15,951 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 1339 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:55:15,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 1809 flow [2024-06-14 11:55:16,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 1718 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-14 11:55:16,109 INFO L231 Difference]: Finished difference. Result has 207 places, 175 transitions, 1290 flow [2024-06-14 11:55:16,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1290, PETRI_PLACES=207, PETRI_TRANSITIONS=175} [2024-06-14 11:55:16,110 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-14 11:55:16,110 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 175 transitions, 1290 flow [2024-06-14 11:55:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:16,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:16,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:16,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:55:16,111 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:16,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1988007444, now seen corresponding path program 3 times [2024-06-14 11:55:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:16,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697588066] [2024-06-14 11:55:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697588066] [2024-06-14 11:55:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697588066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:17,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:17,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:17,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745458916] [2024-06-14 11:55:17,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:17,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:17,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:17,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:17,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 175 transitions, 1290 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:17,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:17,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:17,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:17,556 INFO L124 PetriNetUnfolderBase]: 582/1013 cut-off events. [2024-06-14 11:55:17,556 INFO L125 PetriNetUnfolderBase]: For 75883/75883 co-relation queries the response was YES. [2024-06-14 11:55:17,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 1013 events. 582/1013 cut-off events. For 75883/75883 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4810 event pairs, 104 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 6148. Up to 914 conditions per place. [2024-06-14 11:55:17,564 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 157 selfloop transitions, 38 changer transitions 0/197 dead transitions. [2024-06-14 11:55:17,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 197 transitions, 1754 flow [2024-06-14 11:55:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:55:17,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:55:17,565 INFO L175 Difference]: Start difference. First operand has 207 places, 175 transitions, 1290 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:55:17,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 197 transitions, 1754 flow [2024-06-14 11:55:17,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 197 transitions, 1714 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 11:55:17,743 INFO L231 Difference]: Finished difference. Result has 207 places, 176 transitions, 1356 flow [2024-06-14 11:55:17,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1356, PETRI_PLACES=207, PETRI_TRANSITIONS=176} [2024-06-14 11:55:17,744 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-14 11:55:17,744 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 176 transitions, 1356 flow [2024-06-14 11:55:17,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:17,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:17,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:55:17,745 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:17,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1988007568, now seen corresponding path program 2 times [2024-06-14 11:55:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605391560] [2024-06-14 11:55:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:17,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:18,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:18,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605391560] [2024-06-14 11:55:18,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605391560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:18,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:18,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066409367] [2024-06-14 11:55:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:18,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:18,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:18,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 176 transitions, 1356 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:18,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:18,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:18,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:19,172 INFO L124 PetriNetUnfolderBase]: 606/1052 cut-off events. [2024-06-14 11:55:19,172 INFO L125 PetriNetUnfolderBase]: For 89222/89222 co-relation queries the response was YES. [2024-06-14 11:55:19,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6795 conditions, 1052 events. 606/1052 cut-off events. For 89222/89222 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5056 event pairs, 53 based on Foata normal form. 3/1054 useless extension candidates. Maximal degree in co-relation 6691. Up to 546 conditions per place. [2024-06-14 11:55:19,181 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 122 selfloop transitions, 93 changer transitions 0/217 dead transitions. [2024-06-14 11:55:19,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 2174 flow [2024-06-14 11:55:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-14 11:55:19,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 11:55:19,182 INFO L175 Difference]: Start difference. First operand has 207 places, 176 transitions, 1356 flow. Second operand 12 states and 164 transitions. [2024-06-14 11:55:19,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 2174 flow [2024-06-14 11:55:19,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 217 transitions, 2078 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:19,389 INFO L231 Difference]: Finished difference. Result has 211 places, 182 transitions, 1564 flow [2024-06-14 11:55:19,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1564, PETRI_PLACES=211, PETRI_TRANSITIONS=182} [2024-06-14 11:55:19,390 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-14 11:55:19,390 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 182 transitions, 1564 flow [2024-06-14 11:55:19,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:19,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:19,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:19,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:55:19,390 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:19,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:19,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1988185198, now seen corresponding path program 3 times [2024-06-14 11:55:19,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:19,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738540727] [2024-06-14 11:55:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738540727] [2024-06-14 11:55:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738540727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034599204] [2024-06-14 11:55:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:20,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:20,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 182 transitions, 1564 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:20,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:20,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:20,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:20,759 INFO L124 PetriNetUnfolderBase]: 600/1043 cut-off events. [2024-06-14 11:55:20,759 INFO L125 PetriNetUnfolderBase]: For 84075/84075 co-relation queries the response was YES. [2024-06-14 11:55:20,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1043 events. 600/1043 cut-off events. For 84075/84075 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5019 event pairs, 53 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 6805. Up to 557 conditions per place. [2024-06-14 11:55:20,767 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 121 selfloop transitions, 89 changer transitions 0/212 dead transitions. [2024-06-14 11:55:20,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 212 transitions, 2120 flow [2024-06-14 11:55:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 11:55:20,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 11:55:20,768 INFO L175 Difference]: Start difference. First operand has 211 places, 182 transitions, 1564 flow. Second operand 11 states and 148 transitions. [2024-06-14 11:55:20,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 212 transitions, 2120 flow [2024-06-14 11:55:20,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 212 transitions, 1925 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:20,964 INFO L231 Difference]: Finished difference. Result has 214 places, 182 transitions, 1553 flow [2024-06-14 11:55:20,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1553, PETRI_PLACES=214, PETRI_TRANSITIONS=182} [2024-06-14 11:55:20,965 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-14 11:55:20,965 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 182 transitions, 1553 flow [2024-06-14 11:55:20,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:20,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:20,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:20,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:55:20,965 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:20,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash 373105174, now seen corresponding path program 4 times [2024-06-14 11:55:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:20,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084120893] [2024-06-14 11:55:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084120893] [2024-06-14 11:55:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084120893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:22,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:22,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:22,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720852370] [2024-06-14 11:55:22,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:22,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:22,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:22,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:22,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 182 transitions, 1553 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:22,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:22,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:22,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:22,468 INFO L124 PetriNetUnfolderBase]: 609/1058 cut-off events. [2024-06-14 11:55:22,468 INFO L125 PetriNetUnfolderBase]: For 86053/86053 co-relation queries the response was YES. [2024-06-14 11:55:22,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 1058 events. 609/1058 cut-off events. For 86053/86053 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5079 event pairs, 81 based on Foata normal form. 3/1060 useless extension candidates. Maximal degree in co-relation 7008. Up to 572 conditions per place. [2024-06-14 11:55:22,477 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 126 selfloop transitions, 84 changer transitions 0/212 dead transitions. [2024-06-14 11:55:22,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 212 transitions, 2157 flow [2024-06-14 11:55:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 11:55:22,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 11:55:22,478 INFO L175 Difference]: Start difference. First operand has 214 places, 182 transitions, 1553 flow. Second operand 11 states and 146 transitions. [2024-06-14 11:55:22,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 212 transitions, 2157 flow [2024-06-14 11:55:22,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 212 transitions, 1974 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:55:22,686 INFO L231 Difference]: Finished difference. Result has 215 places, 185 transitions, 1606 flow [2024-06-14 11:55:22,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1606, PETRI_PLACES=215, PETRI_TRANSITIONS=185} [2024-06-14 11:55:22,686 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-14 11:55:22,686 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 185 transitions, 1606 flow [2024-06-14 11:55:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:22,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:22,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:22,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:55:22,687 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:22,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2134640590, now seen corresponding path program 1 times [2024-06-14 11:55:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:22,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037885306] [2024-06-14 11:55:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:22,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037885306] [2024-06-14 11:55:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037885306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303343031] [2024-06-14 11:55:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:23,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:24,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:24,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 185 transitions, 1606 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:24,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:24,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:24,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:24,393 INFO L124 PetriNetUnfolderBase]: 613/1066 cut-off events. [2024-06-14 11:55:24,393 INFO L125 PetriNetUnfolderBase]: For 85710/85710 co-relation queries the response was YES. [2024-06-14 11:55:24,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 1066 events. 613/1066 cut-off events. For 85710/85710 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5133 event pairs, 66 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7136. Up to 902 conditions per place. [2024-06-14 11:55:24,401 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 163 selfloop transitions, 44 changer transitions 0/209 dead transitions. [2024-06-14 11:55:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 209 transitions, 2127 flow [2024-06-14 11:55:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:55:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:55:24,402 INFO L175 Difference]: Start difference. First operand has 215 places, 185 transitions, 1606 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:55:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 209 transitions, 2127 flow [2024-06-14 11:55:24,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 1911 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:24,630 INFO L231 Difference]: Finished difference. Result has 217 places, 188 transitions, 1526 flow [2024-06-14 11:55:24,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1526, PETRI_PLACES=217, PETRI_TRANSITIONS=188} [2024-06-14 11:55:24,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-14 11:55:24,630 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 188 transitions, 1526 flow [2024-06-14 11:55:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:24,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:24,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:55:24,631 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:24,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2141142964, now seen corresponding path program 5 times [2024-06-14 11:55:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:24,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399622001] [2024-06-14 11:55:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:24,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:25,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:25,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399622001] [2024-06-14 11:55:25,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399622001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:25,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:25,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:25,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452900259] [2024-06-14 11:55:25,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:25,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:25,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:25,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:25,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 188 transitions, 1526 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:25,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:25,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:25,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:26,068 INFO L124 PetriNetUnfolderBase]: 622/1081 cut-off events. [2024-06-14 11:55:26,068 INFO L125 PetriNetUnfolderBase]: For 91349/91349 co-relation queries the response was YES. [2024-06-14 11:55:26,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1081 events. 622/1081 cut-off events. For 91349/91349 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5238 event pairs, 73 based on Foata normal form. 3/1083 useless extension candidates. Maximal degree in co-relation 7171. Up to 595 conditions per place. [2024-06-14 11:55:26,078 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 136 selfloop transitions, 82 changer transitions 0/220 dead transitions. [2024-06-14 11:55:26,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 220 transitions, 2194 flow [2024-06-14 11:55:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 11:55:26,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 11:55:26,080 INFO L175 Difference]: Start difference. First operand has 217 places, 188 transitions, 1526 flow. Second operand 11 states and 150 transitions. [2024-06-14 11:55:26,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 220 transitions, 2194 flow [2024-06-14 11:55:26,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 2086 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:26,274 INFO L231 Difference]: Finished difference. Result has 221 places, 191 transitions, 1658 flow [2024-06-14 11:55:26,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1658, PETRI_PLACES=221, PETRI_TRANSITIONS=191} [2024-06-14 11:55:26,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-14 11:55:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 191 transitions, 1658 flow [2024-06-14 11:55:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:26,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:26,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:26,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:55:26,275 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:26,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1662732650, now seen corresponding path program 6 times [2024-06-14 11:55:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732966794] [2024-06-14 11:55:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732966794] [2024-06-14 11:55:27,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732966794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:27,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:27,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585642208] [2024-06-14 11:55:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:27,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:27,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:27,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:27,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 191 transitions, 1658 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:27,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:27,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:27,649 INFO L124 PetriNetUnfolderBase]: 625/1086 cut-off events. [2024-06-14 11:55:27,650 INFO L125 PetriNetUnfolderBase]: For 88150/88150 co-relation queries the response was YES. [2024-06-14 11:55:27,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 1086 events. 625/1086 cut-off events. For 88150/88150 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5330 event pairs, 67 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 7446. Up to 888 conditions per place. [2024-06-14 11:55:27,662 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 53 changer transitions 0/245 dead transitions. [2024-06-14 11:55:27,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 245 transitions, 2573 flow [2024-06-14 11:55:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:55:27,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:55:27,663 INFO L175 Difference]: Start difference. First operand has 221 places, 191 transitions, 1658 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:55:27,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 245 transitions, 2573 flow [2024-06-14 11:55:27,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 245 transitions, 2324 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:27,871 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 1907 flow [2024-06-14 11:55:27,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1907, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2024-06-14 11:55:27,872 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-14 11:55:27,872 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 1907 flow [2024-06-14 11:55:27,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:27,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:55:27,872 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:27,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1662737300, now seen corresponding path program 7 times [2024-06-14 11:55:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447576072] [2024-06-14 11:55:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:28,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447576072] [2024-06-14 11:55:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447576072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:28,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537737473] [2024-06-14 11:55:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:29,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:29,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:29,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:29,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:29,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:29,473 INFO L124 PetriNetUnfolderBase]: 634/1101 cut-off events. [2024-06-14 11:55:29,474 INFO L125 PetriNetUnfolderBase]: For 97302/97302 co-relation queries the response was YES. [2024-06-14 11:55:29,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 1101 events. 634/1101 cut-off events. For 97302/97302 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5354 event pairs, 85 based on Foata normal form. 3/1103 useless extension candidates. Maximal degree in co-relation 7665. Up to 587 conditions per place. [2024-06-14 11:55:29,481 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 132 selfloop transitions, 110 changer transitions 0/244 dead transitions. [2024-06-14 11:55:29,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 244 transitions, 2539 flow [2024-06-14 11:55:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 11:55:29,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-14 11:55:29,483 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 1907 flow. Second operand 12 states and 161 transitions. [2024-06-14 11:55:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 244 transitions, 2539 flow [2024-06-14 11:55:29,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 244 transitions, 2348 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:29,697 INFO L231 Difference]: Finished difference. Result has 233 places, 218 transitions, 2026 flow [2024-06-14 11:55:29,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2026, PETRI_PLACES=233, PETRI_TRANSITIONS=218} [2024-06-14 11:55:29,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-14 11:55:29,698 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 218 transitions, 2026 flow [2024-06-14 11:55:29,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:29,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:29,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:55:29,698 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:29,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2141320718, now seen corresponding path program 4 times [2024-06-14 11:55:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795294987] [2024-06-14 11:55:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:30,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:30,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795294987] [2024-06-14 11:55:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795294987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040659960] [2024-06-14 11:55:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:30,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:30,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 218 transitions, 2026 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:30,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:30,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:30,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:31,175 INFO L124 PetriNetUnfolderBase]: 638/1109 cut-off events. [2024-06-14 11:55:31,175 INFO L125 PetriNetUnfolderBase]: For 92842/92842 co-relation queries the response was YES. [2024-06-14 11:55:31,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 1109 events. 638/1109 cut-off events. For 92842/92842 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5411 event pairs, 108 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 7368. Up to 1010 conditions per place. [2024-06-14 11:55:31,184 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 36 changer transitions 0/237 dead transitions. [2024-06-14 11:55:31,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 2564 flow [2024-06-14 11:55:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:55:31,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:55:31,185 INFO L175 Difference]: Start difference. First operand has 233 places, 218 transitions, 2026 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:55:31,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 2564 flow [2024-06-14 11:55:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 237 transitions, 2294 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-14 11:55:31,407 INFO L231 Difference]: Finished difference. Result has 234 places, 219 transitions, 1860 flow [2024-06-14 11:55:31,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=234, PETRI_TRANSITIONS=219} [2024-06-14 11:55:31,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-14 11:55:31,408 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 219 transitions, 1860 flow [2024-06-14 11:55:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:31,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:31,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:31,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:55:31,408 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:31,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 891294392, now seen corresponding path program 8 times [2024-06-14 11:55:31,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:31,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086049401] [2024-06-14 11:55:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:31,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086049401] [2024-06-14 11:55:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086049401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424995949] [2024-06-14 11:55:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:32,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:32,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:32,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 219 transitions, 1860 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:32,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:32,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:32,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:32,777 INFO L124 PetriNetUnfolderBase]: 641/1114 cut-off events. [2024-06-14 11:55:32,778 INFO L125 PetriNetUnfolderBase]: For 88961/88961 co-relation queries the response was YES. [2024-06-14 11:55:32,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 1114 events. 641/1114 cut-off events. For 88961/88961 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5467 event pairs, 83 based on Foata normal form. 1/1114 useless extension candidates. Maximal degree in co-relation 7123. Up to 916 conditions per place. [2024-06-14 11:55:32,787 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 56 changer transitions 0/252 dead transitions. [2024-06-14 11:55:32,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 252 transitions, 2543 flow [2024-06-14 11:55:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:55:32,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:55:32,788 INFO L175 Difference]: Start difference. First operand has 234 places, 219 transitions, 1860 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:55:32,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 252 transitions, 2543 flow [2024-06-14 11:55:33,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 252 transitions, 2449 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:33,023 INFO L231 Difference]: Finished difference. Result has 238 places, 230 transitions, 2006 flow [2024-06-14 11:55:33,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2006, PETRI_PLACES=238, PETRI_TRANSITIONS=230} [2024-06-14 11:55:33,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-14 11:55:33,023 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 230 transitions, 2006 flow [2024-06-14 11:55:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:33,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:33,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:33,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:55:33,024 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:33,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 412884078, now seen corresponding path program 9 times [2024-06-14 11:55:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863050020] [2024-06-14 11:55:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863050020] [2024-06-14 11:55:33,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863050020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:33,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:33,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:33,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135702299] [2024-06-14 11:55:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:33,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:34,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:34,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 230 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:34,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:34,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:34,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:34,399 INFO L124 PetriNetUnfolderBase]: 650/1129 cut-off events. [2024-06-14 11:55:34,399 INFO L125 PetriNetUnfolderBase]: For 98072/98072 co-relation queries the response was YES. [2024-06-14 11:55:34,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 1129 events. 650/1129 cut-off events. For 98072/98072 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5539 event pairs, 75 based on Foata normal form. 3/1131 useless extension candidates. Maximal degree in co-relation 7398. Up to 643 conditions per place. [2024-06-14 11:55:34,410 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 159 selfloop transitions, 95 changer transitions 0/256 dead transitions. [2024-06-14 11:55:34,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 256 transitions, 2661 flow [2024-06-14 11:55:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 11:55:34,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 11:55:34,411 INFO L175 Difference]: Start difference. First operand has 238 places, 230 transitions, 2006 flow. Second operand 11 states and 148 transitions. [2024-06-14 11:55:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 256 transitions, 2661 flow [2024-06-14 11:55:34,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 256 transitions, 2558 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 11:55:34,657 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 2180 flow [2024-06-14 11:55:34,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2024-06-14 11:55:34,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-14 11:55:34,658 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 2180 flow [2024-06-14 11:55:34,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:34,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:34,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:34,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:55:34,659 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:34,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1127946656, now seen corresponding path program 2 times [2024-06-14 11:55:34,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:34,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105693162] [2024-06-14 11:55:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105693162] [2024-06-14 11:55:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105693162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:35,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:35,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:35,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349700978] [2024-06-14 11:55:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:35,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:35,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:35,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:35,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:35,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:35,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:36,122 INFO L124 PetriNetUnfolderBase]: 660/1147 cut-off events. [2024-06-14 11:55:36,122 INFO L125 PetriNetUnfolderBase]: For 97148/97148 co-relation queries the response was YES. [2024-06-14 11:55:36,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7757 conditions, 1147 events. 660/1147 cut-off events. For 97148/97148 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5655 event pairs, 71 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 7636. Up to 996 conditions per place. [2024-06-14 11:55:36,134 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-14 11:55:36,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 254 transitions, 2767 flow [2024-06-14 11:55:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:55:36,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-14 11:55:36,135 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 2180 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:55:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 254 transitions, 2767 flow [2024-06-14 11:55:36,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 254 transitions, 2512 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:36,383 INFO L231 Difference]: Finished difference. Result has 246 places, 236 transitions, 2044 flow [2024-06-14 11:55:36,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=246, PETRI_TRANSITIONS=236} [2024-06-14 11:55:36,384 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-14 11:55:36,384 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 236 transitions, 2044 flow [2024-06-14 11:55:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:36,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:36,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:36,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:55:36,385 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:36,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 649373592, now seen corresponding path program 3 times [2024-06-14 11:55:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380713400] [2024-06-14 11:55:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380713400] [2024-06-14 11:55:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380713400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:37,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:37,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748297575] [2024-06-14 11:55:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:37,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:37,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:37,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:37,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 236 transitions, 2044 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:37,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:37,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:37,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:38,043 INFO L124 PetriNetUnfolderBase]: 671/1168 cut-off events. [2024-06-14 11:55:38,043 INFO L125 PetriNetUnfolderBase]: For 105909/105909 co-relation queries the response was YES. [2024-06-14 11:55:38,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1168 events. 671/1168 cut-off events. For 105909/105909 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5811 event pairs, 72 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 7702. Up to 986 conditions per place. [2024-06-14 11:55:38,085 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 43 changer transitions 0/257 dead transitions. [2024-06-14 11:55:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 2800 flow [2024-06-14 11:55:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:55:38,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:55:38,087 INFO L175 Difference]: Start difference. First operand has 246 places, 236 transitions, 2044 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:55:38,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 2800 flow [2024-06-14 11:55:38,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 257 transitions, 2723 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:38,358 INFO L231 Difference]: Finished difference. Result has 250 places, 238 transitions, 2087 flow [2024-06-14 11:55:38,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=250, PETRI_TRANSITIONS=238} [2024-06-14 11:55:38,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-14 11:55:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 238 transitions, 2087 flow [2024-06-14 11:55:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:38,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:38,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:55:38,359 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:38,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1982816404, now seen corresponding path program 4 times [2024-06-14 11:55:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89519301] [2024-06-14 11:55:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:39,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89519301] [2024-06-14 11:55:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89519301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:39,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:39,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063906751] [2024-06-14 11:55:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:39,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:39,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:39,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:39,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:39,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 238 transitions, 2087 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:40,138 INFO L124 PetriNetUnfolderBase]: 675/1176 cut-off events. [2024-06-14 11:55:40,138 INFO L125 PetriNetUnfolderBase]: For 108634/108634 co-relation queries the response was YES. [2024-06-14 11:55:40,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 1176 events. 675/1176 cut-off events. For 108634/108634 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5870 event pairs, 73 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 7776. Up to 1008 conditions per place. [2024-06-14 11:55:40,150 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 43 changer transitions 0/259 dead transitions. [2024-06-14 11:55:40,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 259 transitions, 2681 flow [2024-06-14 11:55:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:55:40,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:55:40,151 INFO L175 Difference]: Start difference. First operand has 250 places, 238 transitions, 2087 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:55:40,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 259 transitions, 2681 flow [2024-06-14 11:55:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 259 transitions, 2609 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:40,418 INFO L231 Difference]: Finished difference. Result has 255 places, 240 transitions, 2141 flow [2024-06-14 11:55:40,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=255, PETRI_TRANSITIONS=240} [2024-06-14 11:55:40,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-14 11:55:40,419 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 240 transitions, 2141 flow [2024-06-14 11:55:40,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:40,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:40,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:55:40,419 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:40,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1983062668, now seen corresponding path program 10 times [2024-06-14 11:55:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920140653] [2024-06-14 11:55:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:40,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920140653] [2024-06-14 11:55:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920140653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:41,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:41,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524413518] [2024-06-14 11:55:41,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:41,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:41,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:41,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 240 transitions, 2141 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:41,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:41,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:41,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:42,038 INFO L124 PetriNetUnfolderBase]: 684/1191 cut-off events. [2024-06-14 11:55:42,039 INFO L125 PetriNetUnfolderBase]: For 115264/115264 co-relation queries the response was YES. [2024-06-14 11:55:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8150 conditions, 1191 events. 684/1191 cut-off events. For 115264/115264 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5965 event pairs, 82 based on Foata normal form. 3/1193 useless extension candidates. Maximal degree in co-relation 8025. Up to 697 conditions per place. [2024-06-14 11:55:42,050 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 162 selfloop transitions, 101 changer transitions 0/265 dead transitions. [2024-06-14 11:55:42,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 265 transitions, 2814 flow [2024-06-14 11:55:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:55:42,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 11:55:42,051 INFO L175 Difference]: Start difference. First operand has 255 places, 240 transitions, 2141 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:55:42,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 265 transitions, 2814 flow [2024-06-14 11:55:42,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 265 transitions, 2724 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:42,337 INFO L231 Difference]: Finished difference. Result has 259 places, 243 transitions, 2344 flow [2024-06-14 11:55:42,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2344, PETRI_PLACES=259, PETRI_TRANSITIONS=243} [2024-06-14 11:55:42,337 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-06-14 11:55:42,337 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 243 transitions, 2344 flow [2024-06-14 11:55:42,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:42,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:42,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:42,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:55:42,337 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:42,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 419386452, now seen corresponding path program 5 times [2024-06-14 11:55:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995630168] [2024-06-14 11:55:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995630168] [2024-06-14 11:55:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995630168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686412072] [2024-06-14 11:55:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:43,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:43,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:43,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 243 transitions, 2344 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:43,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:43,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:43,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:44,114 INFO L124 PetriNetUnfolderBase]: 681/1186 cut-off events. [2024-06-14 11:55:44,114 INFO L125 PetriNetUnfolderBase]: For 106758/106758 co-relation queries the response was YES. [2024-06-14 11:55:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8152 conditions, 1186 events. 681/1186 cut-off events. For 106758/106758 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5936 event pairs, 72 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 8026. Up to 1018 conditions per place. [2024-06-14 11:55:44,123 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 42 changer transitions 0/262 dead transitions. [2024-06-14 11:55:44,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 2918 flow [2024-06-14 11:55:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:55:44,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 11:55:44,125 INFO L175 Difference]: Start difference. First operand has 259 places, 243 transitions, 2344 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:55:44,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 2918 flow [2024-06-14 11:55:44,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 262 transitions, 2645 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:44,441 INFO L231 Difference]: Finished difference. Result has 260 places, 243 transitions, 2159 flow [2024-06-14 11:55:44,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2159, PETRI_PLACES=260, PETRI_TRANSITIONS=243} [2024-06-14 11:55:44,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-14 11:55:44,441 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 243 transitions, 2159 flow [2024-06-14 11:55:44,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:44,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:44,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:44,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:55:44,442 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:44,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash 897723482, now seen corresponding path program 11 times [2024-06-14 11:55:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458789505] [2024-06-14 11:55:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:45,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458789505] [2024-06-14 11:55:45,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458789505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:45,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:45,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130581492] [2024-06-14 11:55:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:45,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:45,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 243 transitions, 2159 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:45,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:45,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:45,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:45,819 INFO L124 PetriNetUnfolderBase]: 684/1191 cut-off events. [2024-06-14 11:55:45,819 INFO L125 PetriNetUnfolderBase]: For 104725/104725 co-relation queries the response was YES. [2024-06-14 11:55:45,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7981 conditions, 1191 events. 684/1191 cut-off events. For 104725/104725 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6009 event pairs, 87 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 7854. Up to 993 conditions per place. [2024-06-14 11:55:45,830 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 211 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-06-14 11:55:45,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 271 transitions, 2872 flow [2024-06-14 11:55:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:55:45,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:55:45,831 INFO L175 Difference]: Start difference. First operand has 260 places, 243 transitions, 2159 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:55:45,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 271 transitions, 2872 flow [2024-06-14 11:55:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 271 transitions, 2750 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:55:46,146 INFO L231 Difference]: Finished difference. Result has 261 places, 249 transitions, 2246 flow [2024-06-14 11:55:46,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2246, PETRI_PLACES=261, PETRI_TRANSITIONS=249} [2024-06-14 11:55:46,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-14 11:55:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 249 transitions, 2246 flow [2024-06-14 11:55:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:46,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:46,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:55:46,147 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:46,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 891289618, now seen corresponding path program 5 times [2024-06-14 11:55:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090426227] [2024-06-14 11:55:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090426227] [2024-06-14 11:55:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090426227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304944025] [2024-06-14 11:55:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:47,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:47,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:47,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:47,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:47,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:47,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 249 transitions, 2246 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:47,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:47,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:47,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:47,604 INFO L124 PetriNetUnfolderBase]: 688/1199 cut-off events. [2024-06-14 11:55:47,604 INFO L125 PetriNetUnfolderBase]: For 111344/111344 co-relation queries the response was YES. [2024-06-14 11:55:47,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8103 conditions, 1199 events. 688/1199 cut-off events. For 111344/111344 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6006 event pairs, 102 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 7976. Up to 1100 conditions per place. [2024-06-14 11:55:47,617 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 35 changer transitions 0/265 dead transitions. [2024-06-14 11:55:47,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 265 transitions, 2834 flow [2024-06-14 11:55:47,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:55:47,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 11:55:47,618 INFO L175 Difference]: Start difference. First operand has 261 places, 249 transitions, 2246 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:55:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 265 transitions, 2834 flow [2024-06-14 11:55:47,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 265 transitions, 2699 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:47,906 INFO L231 Difference]: Finished difference. Result has 267 places, 250 transitions, 2215 flow [2024-06-14 11:55:47,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2215, PETRI_PLACES=267, PETRI_TRANSITIONS=250} [2024-06-14 11:55:47,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-14 11:55:47,906 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 250 transitions, 2215 flow [2024-06-14 11:55:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:47,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:47,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:47,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:55:47,907 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:47,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 891289742, now seen corresponding path program 12 times [2024-06-14 11:55:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160047623] [2024-06-14 11:55:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:48,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160047623] [2024-06-14 11:55:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160047623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:48,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:48,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739581553] [2024-06-14 11:55:48,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:48,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:48,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:48,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 250 transitions, 2215 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:48,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:49,435 INFO L124 PetriNetUnfolderBase]: 707/1230 cut-off events. [2024-06-14 11:55:49,435 INFO L125 PetriNetUnfolderBase]: For 126739/126739 co-relation queries the response was YES. [2024-06-14 11:55:49,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8556 conditions, 1230 events. 707/1230 cut-off events. For 126739/126739 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6192 event pairs, 79 based on Foata normal form. 3/1232 useless extension candidates. Maximal degree in co-relation 8428. Up to 694 conditions per place. [2024-06-14 11:55:49,447 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 162 selfloop transitions, 115 changer transitions 0/279 dead transitions. [2024-06-14 11:55:49,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 3169 flow [2024-06-14 11:55:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 11:55:49,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 11:55:49,449 INFO L175 Difference]: Start difference. First operand has 267 places, 250 transitions, 2215 flow. Second operand 12 states and 160 transitions. [2024-06-14 11:55:49,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 3169 flow [2024-06-14 11:55:49,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 279 transitions, 3075 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:49,781 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2519 flow [2024-06-14 11:55:49,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2519, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-14 11:55:49,781 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2024-06-14 11:55:49,781 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2519 flow [2024-06-14 11:55:49,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:49,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:49,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:55:49,781 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:49,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash 346470484, now seen corresponding path program 6 times [2024-06-14 11:55:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246729095] [2024-06-14 11:55:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:50,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246729095] [2024-06-14 11:55:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246729095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:50,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:50,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433019335] [2024-06-14 11:55:50,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:50,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:50,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:50,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2519 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:50,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:50,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:50,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:51,384 INFO L124 PetriNetUnfolderBase]: 718/1251 cut-off events. [2024-06-14 11:55:51,384 INFO L125 PetriNetUnfolderBase]: For 134125/134125 co-relation queries the response was YES. [2024-06-14 11:55:51,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9101 conditions, 1251 events. 718/1251 cut-off events. For 134125/134125 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6333 event pairs, 103 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 8972. Up to 1183 conditions per place. [2024-06-14 11:55:51,395 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 249 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2024-06-14 11:55:51,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 271 transitions, 3303 flow [2024-06-14 11:55:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:55:51,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:55:51,397 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2519 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:55:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 271 transitions, 3303 flow [2024-06-14 11:55:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 271 transitions, 3092 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:51,749 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2386 flow [2024-06-14 11:55:51,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2386, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2024-06-14 11:55:51,749 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-14 11:55:51,750 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2386 flow [2024-06-14 11:55:51,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:51,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:51,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:51,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:55:51,750 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:51,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1314610708, now seen corresponding path program 7 times [2024-06-14 11:55:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138769751] [2024-06-14 11:55:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:51,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:53,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138769751] [2024-06-14 11:55:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138769751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:53,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:53,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:53,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728117807] [2024-06-14 11:55:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:53,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:53,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:53,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 2386 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:53,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:53,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:53,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:53,564 INFO L124 PetriNetUnfolderBase]: 728/1269 cut-off events. [2024-06-14 11:55:53,564 INFO L125 PetriNetUnfolderBase]: For 136035/136035 co-relation queries the response was YES. [2024-06-14 11:55:53,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 1269 events. 728/1269 cut-off events. For 136035/136035 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6486 event pairs, 99 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 8944. Up to 1185 conditions per place. [2024-06-14 11:55:53,574 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 250 selfloop transitions, 26 changer transitions 0/278 dead transitions. [2024-06-14 11:55:53,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 278 transitions, 3038 flow [2024-06-14 11:55:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:55:53,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:55:53,575 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2386 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:55:53,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 278 transitions, 3038 flow [2024-06-14 11:55:53,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 278 transitions, 2995 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:53,944 INFO L231 Difference]: Finished difference. Result has 277 places, 263 transitions, 2467 flow [2024-06-14 11:55:53,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2467, PETRI_PLACES=277, PETRI_TRANSITIONS=263} [2024-06-14 11:55:53,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 245 predicate places. [2024-06-14 11:55:53,945 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 263 transitions, 2467 flow [2024-06-14 11:55:53,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:53,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:53,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:55:53,945 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:53,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:53,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2083136414, now seen corresponding path program 8 times [2024-06-14 11:55:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:53,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969482473] [2024-06-14 11:55:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:55,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969482473] [2024-06-14 11:55:55,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969482473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:55,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:55,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:55,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69553399] [2024-06-14 11:55:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:55,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:55,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:55,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 263 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:55,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:55,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:55,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:55,535 INFO L124 PetriNetUnfolderBase]: 738/1287 cut-off events. [2024-06-14 11:55:55,535 INFO L125 PetriNetUnfolderBase]: For 138958/138958 co-relation queries the response was YES. [2024-06-14 11:55:55,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9269 conditions, 1287 events. 738/1287 cut-off events. For 138958/138958 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6593 event pairs, 105 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9135. Up to 1240 conditions per place. [2024-06-14 11:55:55,547 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 261 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-06-14 11:55:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 281 transitions, 3117 flow [2024-06-14 11:55:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:55:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:55:55,548 INFO L175 Difference]: Start difference. First operand has 277 places, 263 transitions, 2467 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:55:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 281 transitions, 3117 flow [2024-06-14 11:55:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 3062 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:55,940 INFO L231 Difference]: Finished difference. Result has 283 places, 268 transitions, 2520 flow [2024-06-14 11:55:55,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2520, PETRI_PLACES=283, PETRI_TRANSITIONS=268} [2024-06-14 11:55:55,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-14 11:55:55,940 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 268 transitions, 2520 flow [2024-06-14 11:55:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:55,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:55,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:55,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:55:55,941 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:55,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2065143912, now seen corresponding path program 9 times [2024-06-14 11:55:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672004423] [2024-06-14 11:55:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:57,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672004423] [2024-06-14 11:55:57,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672004423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:57,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:57,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555492701] [2024-06-14 11:55:57,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:57,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:57,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 268 transitions, 2520 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:57,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:57,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:57,749 INFO L124 PetriNetUnfolderBase]: 749/1308 cut-off events. [2024-06-14 11:55:57,749 INFO L125 PetriNetUnfolderBase]: For 151005/151005 co-relation queries the response was YES. [2024-06-14 11:55:57,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 1308 events. 749/1308 cut-off events. For 151005/151005 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6756 event pairs, 104 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 9483. Up to 1195 conditions per place. [2024-06-14 11:55:57,760 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 252 selfloop transitions, 31 changer transitions 0/285 dead transitions. [2024-06-14 11:55:57,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 285 transitions, 3354 flow [2024-06-14 11:55:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:55:57,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-14 11:55:57,761 INFO L175 Difference]: Start difference. First operand has 283 places, 268 transitions, 2520 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:55:57,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 285 transitions, 3354 flow [2024-06-14 11:55:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 285 transitions, 3313 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:58,259 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 2591 flow [2024-06-14 11:55:58,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2591, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2024-06-14 11:55:58,259 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-14 11:55:58,260 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 2591 flow [2024-06-14 11:55:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:55:58,260 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1322942578, now seen corresponding path program 10 times [2024-06-14 11:55:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86182840] [2024-06-14 11:55:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86182840] [2024-06-14 11:55:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86182840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366870738] [2024-06-14 11:55:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:59,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:59,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:55:59,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 2591 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:59,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:59,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:55:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:00,089 INFO L124 PetriNetUnfolderBase]: 753/1316 cut-off events. [2024-06-14 11:56:00,089 INFO L125 PetriNetUnfolderBase]: For 154497/154497 co-relation queries the response was YES. [2024-06-14 11:56:00,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9736 conditions, 1316 events. 753/1316 cut-off events. For 154497/154497 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6825 event pairs, 104 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 9599. Up to 1211 conditions per place. [2024-06-14 11:56:00,107 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 252 selfloop transitions, 33 changer transitions 0/287 dead transitions. [2024-06-14 11:56:00,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 287 transitions, 3236 flow [2024-06-14 11:56:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:56:00,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 11:56:00,108 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 2591 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:56:00,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 287 transitions, 3236 flow [2024-06-14 11:56:00,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 287 transitions, 3163 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:00,657 INFO L231 Difference]: Finished difference. Result has 293 places, 272 transitions, 2633 flow [2024-06-14 11:56:00,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=293, PETRI_TRANSITIONS=272} [2024-06-14 11:56:00,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-14 11:56:00,658 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 272 transitions, 2633 flow [2024-06-14 11:56:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:00,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:00,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:56:00,659 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:00,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1544833882, now seen corresponding path program 13 times [2024-06-14 11:56:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446273300] [2024-06-14 11:56:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:01,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446273300] [2024-06-14 11:56:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446273300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794714046] [2024-06-14 11:56:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:01,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:01,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 272 transitions, 2633 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:01,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:01,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:01,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:02,063 INFO L124 PetriNetUnfolderBase]: 762/1331 cut-off events. [2024-06-14 11:56:02,063 INFO L125 PetriNetUnfolderBase]: For 162661/162661 co-relation queries the response was YES. [2024-06-14 11:56:02,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1331 events. 762/1331 cut-off events. For 162661/162661 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6916 event pairs, 96 based on Foata normal form. 3/1333 useless extension candidates. Maximal degree in co-relation 9822. Up to 1115 conditions per place. [2024-06-14 11:56:02,077 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 245 selfloop transitions, 48 changer transitions 0/295 dead transitions. [2024-06-14 11:56:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 295 transitions, 3391 flow [2024-06-14 11:56:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:56:02,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:56:02,079 INFO L175 Difference]: Start difference. First operand has 293 places, 272 transitions, 2633 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:56:02,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 295 transitions, 3391 flow [2024-06-14 11:56:02,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 295 transitions, 3317 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:02,612 INFO L231 Difference]: Finished difference. Result has 297 places, 275 transitions, 2762 flow [2024-06-14 11:56:02,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2762, PETRI_PLACES=297, PETRI_TRANSITIONS=275} [2024-06-14 11:56:02,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-14 11:56:02,613 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 275 transitions, 2762 flow [2024-06-14 11:56:02,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:02,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:02,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:02,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:56:02,613 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1544587618, now seen corresponding path program 11 times [2024-06-14 11:56:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878394912] [2024-06-14 11:56:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:02,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878394912] [2024-06-14 11:56:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878394912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:03,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53518593] [2024-06-14 11:56:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:04,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:04,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 275 transitions, 2762 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:04,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:04,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:04,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:04,472 INFO L124 PetriNetUnfolderBase]: 759/1326 cut-off events. [2024-06-14 11:56:04,472 INFO L125 PetriNetUnfolderBase]: For 151884/151884 co-relation queries the response was YES. [2024-06-14 11:56:04,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9842 conditions, 1326 events. 759/1326 cut-off events. For 151884/151884 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6884 event pairs, 101 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 9701. Up to 1221 conditions per place. [2024-06-14 11:56:04,485 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 251 selfloop transitions, 36 changer transitions 0/289 dead transitions. [2024-06-14 11:56:04,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 289 transitions, 3372 flow [2024-06-14 11:56:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:56:04,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-14 11:56:04,486 INFO L175 Difference]: Start difference. First operand has 297 places, 275 transitions, 2762 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:56:04,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 289 transitions, 3372 flow [2024-06-14 11:56:05,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 3183 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:05,004 INFO L231 Difference]: Finished difference. Result has 298 places, 275 transitions, 2649 flow [2024-06-14 11:56:05,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2649, PETRI_PLACES=298, PETRI_TRANSITIONS=275} [2024-06-14 11:56:05,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-14 11:56:05,005 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 275 transitions, 2649 flow [2024-06-14 11:56:05,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:05,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:05,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:05,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:56:05,005 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:05,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1323188842, now seen corresponding path program 14 times [2024-06-14 11:56:05,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:05,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588541993] [2024-06-14 11:56:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588541993] [2024-06-14 11:56:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588541993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732571380] [2024-06-14 11:56:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:05,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:05,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 275 transitions, 2649 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:05,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:05,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:06,470 INFO L124 PetriNetUnfolderBase]: 768/1341 cut-off events. [2024-06-14 11:56:06,470 INFO L125 PetriNetUnfolderBase]: For 159605/159605 co-relation queries the response was YES. [2024-06-14 11:56:06,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9877 conditions, 1341 events. 768/1341 cut-off events. For 159605/159605 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6976 event pairs, 105 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 9735. Up to 1125 conditions per place. [2024-06-14 11:56:06,482 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-14 11:56:06,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 298 transitions, 3419 flow [2024-06-14 11:56:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:56:06,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 11:56:06,483 INFO L175 Difference]: Start difference. First operand has 298 places, 275 transitions, 2649 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:56:06,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 298 transitions, 3419 flow [2024-06-14 11:56:06,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 3322 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:06,931 INFO L231 Difference]: Finished difference. Result has 299 places, 278 transitions, 2759 flow [2024-06-14 11:56:06,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2759, PETRI_PLACES=299, PETRI_TRANSITIONS=278} [2024-06-14 11:56:06,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 11:56:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 278 transitions, 2759 flow [2024-06-14 11:56:06,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:06,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:06,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:06,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:56:06,932 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:06,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -468042048, now seen corresponding path program 15 times [2024-06-14 11:56:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:06,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599367073] [2024-06-14 11:56:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:07,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599367073] [2024-06-14 11:56:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599367073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:07,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:07,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478430221] [2024-06-14 11:56:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:07,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:08,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:08,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 278 transitions, 2759 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:08,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:08,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:08,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:08,547 INFO L124 PetriNetUnfolderBase]: 777/1356 cut-off events. [2024-06-14 11:56:08,547 INFO L125 PetriNetUnfolderBase]: For 164027/164027 co-relation queries the response was YES. [2024-06-14 11:56:08,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1356 events. 777/1356 cut-off events. For 164027/164027 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7063 event pairs, 91 based on Foata normal form. 3/1358 useless extension candidates. Maximal degree in co-relation 10014. Up to 1140 conditions per place. [2024-06-14 11:56:08,559 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 244 selfloop transitions, 54 changer transitions 0/300 dead transitions. [2024-06-14 11:56:08,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 300 transitions, 3529 flow [2024-06-14 11:56:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:56:08,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-14 11:56:08,560 INFO L175 Difference]: Start difference. First operand has 299 places, 278 transitions, 2759 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:56:08,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 300 transitions, 3529 flow [2024-06-14 11:56:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 300 transitions, 3346 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:09,092 INFO L231 Difference]: Finished difference. Result has 301 places, 281 transitions, 2803 flow [2024-06-14 11:56:09,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2803, PETRI_PLACES=301, PETRI_TRANSITIONS=281} [2024-06-14 11:56:09,093 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-14 11:56:09,093 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 281 transitions, 2803 flow [2024-06-14 11:56:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:09,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:09,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:09,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:56:09,094 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:09,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash -814570286, now seen corresponding path program 12 times [2024-06-14 11:56:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033350723] [2024-06-14 11:56:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:09,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:10,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033350723] [2024-06-14 11:56:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033350723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:10,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:10,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641800816] [2024-06-14 11:56:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:10,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 281 transitions, 2803 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:10,783 INFO L124 PetriNetUnfolderBase]: 781/1364 cut-off events. [2024-06-14 11:56:10,783 INFO L125 PetriNetUnfolderBase]: For 161233/161233 co-relation queries the response was YES. [2024-06-14 11:56:10,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1364 events. 781/1364 cut-off events. For 161233/161233 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7118 event pairs, 113 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 9995. Up to 1326 conditions per place. [2024-06-14 11:56:10,798 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 278 selfloop transitions, 15 changer transitions 0/295 dead transitions. [2024-06-14 11:56:10,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 295 transitions, 3433 flow [2024-06-14 11:56:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:56:10,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-14 11:56:10,799 INFO L175 Difference]: Start difference. First operand has 301 places, 281 transitions, 2803 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:56:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 295 transitions, 3433 flow [2024-06-14 11:56:11,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 295 transitions, 3230 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:11,352 INFO L231 Difference]: Finished difference. Result has 302 places, 282 transitions, 2648 flow [2024-06-14 11:56:11,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2648, PETRI_PLACES=302, PETRI_TRANSITIONS=282} [2024-06-14 11:56:11,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-14 11:56:11,353 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 282 transitions, 2648 flow [2024-06-14 11:56:11,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:11,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:11,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:11,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:56:11,353 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:11,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash -814867514, now seen corresponding path program 1 times [2024-06-14 11:56:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672050437] [2024-06-14 11:56:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:11,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:12,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:12,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672050437] [2024-06-14 11:56:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672050437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:12,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:12,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729105970] [2024-06-14 11:56:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:12,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:12,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 282 transitions, 2648 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:12,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:12,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:12,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:12,953 INFO L124 PetriNetUnfolderBase]: 778/1360 cut-off events. [2024-06-14 11:56:12,953 INFO L125 PetriNetUnfolderBase]: For 153351/153351 co-relation queries the response was YES. [2024-06-14 11:56:12,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9693 conditions, 1360 events. 778/1360 cut-off events. For 153351/153351 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7096 event pairs, 110 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 9549. Up to 1296 conditions per place. [2024-06-14 11:56:12,968 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 275 selfloop transitions, 25 changer transitions 0/302 dead transitions. [2024-06-14 11:56:12,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 302 transitions, 3592 flow [2024-06-14 11:56:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:56:12,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-14 11:56:12,971 INFO L175 Difference]: Start difference. First operand has 302 places, 282 transitions, 2648 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:56:12,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 302 transitions, 3592 flow [2024-06-14 11:56:13,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 302 transitions, 3556 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:13,514 INFO L231 Difference]: Finished difference. Result has 306 places, 286 transitions, 2780 flow [2024-06-14 11:56:13,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=306, PETRI_TRANSITIONS=286} [2024-06-14 11:56:13,515 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-14 11:56:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 286 transitions, 2780 flow [2024-06-14 11:56:13,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:13,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:13,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:56:13,515 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:13,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash -468219678, now seen corresponding path program 16 times [2024-06-14 11:56:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:13,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62514273] [2024-06-14 11:56:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:14,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62514273] [2024-06-14 11:56:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62514273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:14,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:14,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461653513] [2024-06-14 11:56:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:14,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:14,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:14,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 286 transitions, 2780 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:14,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:14,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:14,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:15,361 INFO L124 PetriNetUnfolderBase]: 797/1391 cut-off events. [2024-06-14 11:56:15,361 INFO L125 PetriNetUnfolderBase]: For 174114/174114 co-relation queries the response was YES. [2024-06-14 11:56:15,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 1391 events. 797/1391 cut-off events. For 174114/174114 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7287 event pairs, 88 based on Foata normal form. 3/1393 useless extension candidates. Maximal degree in co-relation 10259. Up to 1122 conditions per place. [2024-06-14 11:56:15,376 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 241 selfloop transitions, 71 changer transitions 0/314 dead transitions. [2024-06-14 11:56:15,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 314 transitions, 3912 flow [2024-06-14 11:56:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:56:15,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 11:56:15,377 INFO L175 Difference]: Start difference. First operand has 306 places, 286 transitions, 2780 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:56:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 314 transitions, 3912 flow [2024-06-14 11:56:15,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 314 transitions, 3823 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:15,875 INFO L231 Difference]: Finished difference. Result has 311 places, 292 transitions, 3075 flow [2024-06-14 11:56:15,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3075, PETRI_PLACES=311, PETRI_TRANSITIONS=292} [2024-06-14 11:56:15,876 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-14 11:56:15,876 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 292 transitions, 3075 flow [2024-06-14 11:56:15,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:15,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:15,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:15,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:56:15,876 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:15,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash -274404816, now seen corresponding path program 13 times [2024-06-14 11:56:15,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138942458] [2024-06-14 11:56:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138942458] [2024-06-14 11:56:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138942458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:17,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848053449] [2024-06-14 11:56:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:17,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:17,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 292 transitions, 3075 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:17,660 INFO L124 PetriNetUnfolderBase]: 801/1399 cut-off events. [2024-06-14 11:56:17,660 INFO L125 PetriNetUnfolderBase]: For 172217/172217 co-relation queries the response was YES. [2024-06-14 11:56:17,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 1399 events. 801/1399 cut-off events. For 172217/172217 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7325 event pairs, 115 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 10473. Up to 1356 conditions per place. [2024-06-14 11:56:17,676 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 289 selfloop transitions, 16 changer transitions 0/307 dead transitions. [2024-06-14 11:56:17,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 307 transitions, 3748 flow [2024-06-14 11:56:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 11:56:17,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-14 11:56:17,677 INFO L175 Difference]: Start difference. First operand has 311 places, 292 transitions, 3075 flow. Second operand 11 states and 114 transitions. [2024-06-14 11:56:17,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 307 transitions, 3748 flow [2024-06-14 11:56:18,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 307 transitions, 3541 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:18,167 INFO L231 Difference]: Finished difference. Result has 315 places, 295 transitions, 2948 flow [2024-06-14 11:56:18,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=315, PETRI_TRANSITIONS=295} [2024-06-14 11:56:18,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 11:56:18,167 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 295 transitions, 2948 flow [2024-06-14 11:56:18,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:18,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:18,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:18,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:56:18,168 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:18,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1551267746, now seen corresponding path program 6 times [2024-06-14 11:56:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460452764] [2024-06-14 11:56:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:19,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460452764] [2024-06-14 11:56:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460452764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113891484] [2024-06-14 11:56:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:19,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:19,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 295 transitions, 2948 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:19,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:19,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:19,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:19,675 INFO L124 PetriNetUnfolderBase]: 798/1394 cut-off events. [2024-06-14 11:56:19,675 INFO L125 PetriNetUnfolderBase]: For 163055/163055 co-relation queries the response was YES. [2024-06-14 11:56:19,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10160 conditions, 1394 events. 798/1394 cut-off events. For 163055/163055 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7302 event pairs, 120 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 10009. Up to 1361 conditions per place. [2024-06-14 11:56:19,689 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 286 selfloop transitions, 18 changer transitions 0/306 dead transitions. [2024-06-14 11:56:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 306 transitions, 3580 flow [2024-06-14 11:56:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:56:19,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:56:19,690 INFO L175 Difference]: Start difference. First operand has 315 places, 295 transitions, 2948 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:56:19,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 306 transitions, 3580 flow [2024-06-14 11:56:20,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 306 transitions, 3530 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:20,203 INFO L231 Difference]: Finished difference. Result has 318 places, 295 transitions, 2938 flow [2024-06-14 11:56:20,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=318, PETRI_TRANSITIONS=295} [2024-06-14 11:56:20,203 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-14 11:56:20,203 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 295 transitions, 2938 flow [2024-06-14 11:56:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:56:20,203 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:20,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2083434944, now seen corresponding path program 14 times [2024-06-14 11:56:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548847210] [2024-06-14 11:56:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:21,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548847210] [2024-06-14 11:56:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548847210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467116996] [2024-06-14 11:56:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:21,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:21,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 295 transitions, 2938 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:21,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:21,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:21,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:21,813 INFO L124 PetriNetUnfolderBase]: 802/1402 cut-off events. [2024-06-14 11:56:21,813 INFO L125 PetriNetUnfolderBase]: For 166170/166170 co-relation queries the response was YES. [2024-06-14 11:56:21,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10219 conditions, 1402 events. 802/1402 cut-off events. For 166170/166170 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7390 event pairs, 116 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 10067. Up to 1332 conditions per place. [2024-06-14 11:56:21,828 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 286 selfloop transitions, 21 changer transitions 0/309 dead transitions. [2024-06-14 11:56:21,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 3818 flow [2024-06-14 11:56:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:56:21,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-14 11:56:21,829 INFO L175 Difference]: Start difference. First operand has 318 places, 295 transitions, 2938 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:56:21,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 3818 flow [2024-06-14 11:56:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 309 transitions, 3714 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:22,356 INFO L231 Difference]: Finished difference. Result has 317 places, 296 transitions, 2906 flow [2024-06-14 11:56:22,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2906, PETRI_PLACES=317, PETRI_TRANSITIONS=296} [2024-06-14 11:56:22,356 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 11:56:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 296 transitions, 2906 flow [2024-06-14 11:56:22,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:22,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:22,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:56:22,357 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:22,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1324549410, now seen corresponding path program 15 times [2024-06-14 11:56:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547222750] [2024-06-14 11:56:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:23,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:23,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547222750] [2024-06-14 11:56:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547222750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:23,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:23,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672508837] [2024-06-14 11:56:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:23,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:23,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:23,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 296 transitions, 2906 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:23,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:23,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:24,170 INFO L124 PetriNetUnfolderBase]: 799/1397 cut-off events. [2024-06-14 11:56:24,170 INFO L125 PetriNetUnfolderBase]: For 157725/157725 co-relation queries the response was YES. [2024-06-14 11:56:24,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 1397 events. 799/1397 cut-off events. For 157725/157725 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7358 event pairs, 111 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9779. Up to 1333 conditions per place. [2024-06-14 11:56:24,186 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 283 selfloop transitions, 24 changer transitions 0/309 dead transitions. [2024-06-14 11:56:24,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 309 transitions, 3554 flow [2024-06-14 11:56:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:56:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-14 11:56:24,187 INFO L175 Difference]: Start difference. First operand has 317 places, 296 transitions, 2906 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:56:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 309 transitions, 3554 flow [2024-06-14 11:56:24,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 309 transitions, 3357 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-14 11:56:24,829 INFO L231 Difference]: Finished difference. Result has 314 places, 296 transitions, 2761 flow [2024-06-14 11:56:24,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2761, PETRI_PLACES=314, PETRI_TRANSITIONS=296} [2024-06-14 11:56:24,829 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-14 11:56:24,829 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 296 transitions, 2761 flow [2024-06-14 11:56:24,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:24,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:24,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:24,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:56:24,830 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:24,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1324303146, now seen corresponding path program 17 times [2024-06-14 11:56:24,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:24,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130672338] [2024-06-14 11:56:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:24,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130672338] [2024-06-14 11:56:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130672338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:25,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:25,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329950803] [2024-06-14 11:56:25,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:25,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:25,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:25,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 296 transitions, 2761 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:25,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:25,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:25,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:26,251 INFO L124 PetriNetUnfolderBase]: 793/1388 cut-off events. [2024-06-14 11:56:26,251 INFO L125 PetriNetUnfolderBase]: For 148615/148615 co-relation queries the response was YES. [2024-06-14 11:56:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 1388 events. 793/1388 cut-off events. For 148615/148615 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7312 event pairs, 112 based on Foata normal form. 3/1390 useless extension candidates. Maximal degree in co-relation 9014. Up to 1306 conditions per place. [2024-06-14 11:56:26,266 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 286 selfloop transitions, 25 changer transitions 0/313 dead transitions. [2024-06-14 11:56:26,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 3445 flow [2024-06-14 11:56:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:56:26,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:56:26,267 INFO L175 Difference]: Start difference. First operand has 314 places, 296 transitions, 2761 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:56:26,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 3445 flow [2024-06-14 11:56:26,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 313 transitions, 3294 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:26,767 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 2667 flow [2024-06-14 11:56:26,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2667, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-14 11:56:26,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:56:26,768 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 2667 flow [2024-06-14 11:56:26,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:26,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:26,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:26,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:56:26,768 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:26,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash -734502764, now seen corresponding path program 1 times [2024-06-14 11:56:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001969845] [2024-06-14 11:56:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001969845] [2024-06-14 11:56:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001969845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:27,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631211944] [2024-06-14 11:56:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:27,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:27,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:27,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:27,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 2667 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:27,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:27,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:27,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:28,349 INFO L124 PetriNetUnfolderBase]: 790/1383 cut-off events. [2024-06-14 11:56:28,349 INFO L125 PetriNetUnfolderBase]: For 132704/132704 co-relation queries the response was YES. [2024-06-14 11:56:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8845 conditions, 1383 events. 790/1383 cut-off events. For 132704/132704 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7298 event pairs, 114 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 8698. Up to 1331 conditions per place. [2024-06-14 11:56:28,365 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 282 selfloop transitions, 24 changer transitions 0/308 dead transitions. [2024-06-14 11:56:28,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 308 transitions, 3311 flow [2024-06-14 11:56:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:56:28,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-14 11:56:28,366 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 2667 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:56:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 308 transitions, 3311 flow [2024-06-14 11:56:28,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 308 transitions, 3197 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:28,894 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 2609 flow [2024-06-14 11:56:28,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2609, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-14 11:56:28,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-14 11:56:28,894 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 2609 flow [2024-06-14 11:56:28,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:28,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:28,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:56:28,895 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:28,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash -734502454, now seen corresponding path program 16 times [2024-06-14 11:56:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518307617] [2024-06-14 11:56:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518307617] [2024-06-14 11:56:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518307617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:30,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:30,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:30,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638604398] [2024-06-14 11:56:30,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:30,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:30,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 2609 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:30,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:30,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:30,600 INFO L124 PetriNetUnfolderBase]: 787/1378 cut-off events. [2024-06-14 11:56:30,600 INFO L125 PetriNetUnfolderBase]: For 129014/129014 co-relation queries the response was YES. [2024-06-14 11:56:30,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8546 conditions, 1378 events. 787/1378 cut-off events. For 129014/129014 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7280 event pairs, 113 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 8398. Up to 1325 conditions per place. [2024-06-14 11:56:30,616 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 284 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2024-06-14 11:56:30,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 308 transitions, 3251 flow [2024-06-14 11:56:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:56:30,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:56:30,617 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 2609 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:56:30,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 308 transitions, 3251 flow [2024-06-14 11:56:31,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 308 transitions, 3195 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:31,029 INFO L231 Difference]: Finished difference. Result has 317 places, 296 transitions, 2603 flow [2024-06-14 11:56:31,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2603, PETRI_PLACES=317, PETRI_TRANSITIONS=296} [2024-06-14 11:56:31,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 11:56:31,030 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 296 transitions, 2603 flow [2024-06-14 11:56:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:31,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:31,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:31,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:56:31,031 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:31,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash -212722008, now seen corresponding path program 1 times [2024-06-14 11:56:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141997563] [2024-06-14 11:56:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:31,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141997563] [2024-06-14 11:56:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141997563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8714583] [2024-06-14 11:56:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:32,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:32,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:32,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:32,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 296 transitions, 2603 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:32,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:32,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:32,818 INFO L124 PetriNetUnfolderBase]: 834/1471 cut-off events. [2024-06-14 11:56:32,818 INFO L125 PetriNetUnfolderBase]: For 216144/216144 co-relation queries the response was YES. [2024-06-14 11:56:32,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1471 events. 834/1471 cut-off events. For 216144/216144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7834 event pairs, 116 based on Foata normal form. 2/1472 useless extension candidates. Maximal degree in co-relation 10570. Up to 1254 conditions per place. [2024-06-14 11:56:32,834 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 309 selfloop transitions, 26 changer transitions 0/337 dead transitions. [2024-06-14 11:56:32,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 337 transitions, 3762 flow [2024-06-14 11:56:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-14 11:56:32,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-14 11:56:32,835 INFO L175 Difference]: Start difference. First operand has 317 places, 296 transitions, 2603 flow. Second operand 13 states and 163 transitions. [2024-06-14 11:56:32,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 337 transitions, 3762 flow [2024-06-14 11:56:33,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 337 transitions, 3658 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:33,560 INFO L231 Difference]: Finished difference. Result has 320 places, 298 transitions, 2627 flow [2024-06-14 11:56:33,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2627, PETRI_PLACES=320, PETRI_TRANSITIONS=298} [2024-06-14 11:56:33,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 288 predicate places. [2024-06-14 11:56:33,560 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 298 transitions, 2627 flow [2024-06-14 11:56:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:33,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:33,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:56:33,561 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:33,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -210848058, now seen corresponding path program 2 times [2024-06-14 11:56:33,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:33,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204040078] [2024-06-14 11:56:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204040078] [2024-06-14 11:56:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204040078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:34,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:34,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:34,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489551841] [2024-06-14 11:56:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:34,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:34,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 298 transitions, 2627 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:34,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:34,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:34,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:35,457 INFO L124 PetriNetUnfolderBase]: 838/1479 cut-off events. [2024-06-14 11:56:35,457 INFO L125 PetriNetUnfolderBase]: For 216546/216546 co-relation queries the response was YES. [2024-06-14 11:56:35,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1479 events. 838/1479 cut-off events. For 216546/216546 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7899 event pairs, 124 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 10638. Up to 1292 conditions per place. [2024-06-14 11:56:35,471 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 309 selfloop transitions, 26 changer transitions 0/337 dead transitions. [2024-06-14 11:56:35,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 337 transitions, 3752 flow [2024-06-14 11:56:35,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-14 11:56:35,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-14 11:56:35,472 INFO L175 Difference]: Start difference. First operand has 320 places, 298 transitions, 2627 flow. Second operand 13 states and 162 transitions. [2024-06-14 11:56:35,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 337 transitions, 3752 flow [2024-06-14 11:56:36,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 337 transitions, 3677 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:36,175 INFO L231 Difference]: Finished difference. Result has 324 places, 299 transitions, 2644 flow [2024-06-14 11:56:36,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2644, PETRI_PLACES=324, PETRI_TRANSITIONS=299} [2024-06-14 11:56:36,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 11:56:36,175 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 299 transitions, 2644 flow [2024-06-14 11:56:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:36,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:36,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:36,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:56:36,175 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:36,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash -210844338, now seen corresponding path program 3 times [2024-06-14 11:56:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266027689] [2024-06-14 11:56:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266027689] [2024-06-14 11:56:37,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266027689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:37,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:37,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379114828] [2024-06-14 11:56:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:37,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:37,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:37,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:37,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:37,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 299 transitions, 2644 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:37,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:37,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:38,221 INFO L124 PetriNetUnfolderBase]: 819/1446 cut-off events. [2024-06-14 11:56:38,221 INFO L125 PetriNetUnfolderBase]: For 209934/209934 co-relation queries the response was YES. [2024-06-14 11:56:38,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 1446 events. 819/1446 cut-off events. For 209934/209934 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7733 event pairs, 115 based on Foata normal form. 14/1459 useless extension candidates. Maximal degree in co-relation 8887. Up to 1304 conditions per place. [2024-06-14 11:56:38,233 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 300 selfloop transitions, 23 changer transitions 11/336 dead transitions. [2024-06-14 11:56:38,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 336 transitions, 3509 flow [2024-06-14 11:56:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:56:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:56:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2024-06-14 11:56:38,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36147186147186144 [2024-06-14 11:56:38,234 INFO L175 Difference]: Start difference. First operand has 324 places, 299 transitions, 2644 flow. Second operand 14 states and 167 transitions. [2024-06-14 11:56:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 336 transitions, 3509 flow [2024-06-14 11:56:38,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 336 transitions, 3425 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:38,719 INFO L231 Difference]: Finished difference. Result has 327 places, 296 transitions, 2586 flow [2024-06-14 11:56:38,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2586, PETRI_PLACES=327, PETRI_TRANSITIONS=296} [2024-06-14 11:56:38,719 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 11:56:38,719 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 296 transitions, 2586 flow [2024-06-14 11:56:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:38,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:38,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:56:38,720 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:38,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -210844183, now seen corresponding path program 1 times [2024-06-14 11:56:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301385777] [2024-06-14 11:56:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:38,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:39,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:39,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301385777] [2024-06-14 11:56:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301385777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109594900] [2024-06-14 11:56:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:39,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:39,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:39,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 296 transitions, 2586 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:39,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:39,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:39,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:40,542 INFO L124 PetriNetUnfolderBase]: 809/1422 cut-off events. [2024-06-14 11:56:40,542 INFO L125 PetriNetUnfolderBase]: For 153604/153604 co-relation queries the response was YES. [2024-06-14 11:56:40,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9258 conditions, 1422 events. 809/1422 cut-off events. For 153604/153604 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7581 event pairs, 111 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 9105. Up to 1327 conditions per place. [2024-06-14 11:56:40,554 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 305 selfloop transitions, 27 changer transitions 2/336 dead transitions. [2024-06-14 11:56:40,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 336 transitions, 3774 flow [2024-06-14 11:56:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 11:56:40,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36596736596736595 [2024-06-14 11:56:40,555 INFO L175 Difference]: Start difference. First operand has 327 places, 296 transitions, 2586 flow. Second operand 13 states and 157 transitions. [2024-06-14 11:56:40,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 336 transitions, 3774 flow [2024-06-14 11:56:41,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 336 transitions, 3693 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-14 11:56:41,110 INFO L231 Difference]: Finished difference. Result has 329 places, 304 transitions, 2777 flow [2024-06-14 11:56:41,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2777, PETRI_PLACES=329, PETRI_TRANSITIONS=304} [2024-06-14 11:56:41,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-14 11:56:41,111 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 304 transitions, 2777 flow [2024-06-14 11:56:41,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:41,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:41,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:56:41,112 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:41,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1341731495, now seen corresponding path program 2 times [2024-06-14 11:56:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:41,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409156535] [2024-06-14 11:56:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409156535] [2024-06-14 11:56:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409156535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:42,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047219012] [2024-06-14 11:56:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:42,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:42,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 304 transitions, 2777 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:42,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:42,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:42,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:43,020 INFO L124 PetriNetUnfolderBase]: 856/1508 cut-off events. [2024-06-14 11:56:43,021 INFO L125 PetriNetUnfolderBase]: For 171971/171971 co-relation queries the response was YES. [2024-06-14 11:56:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 1508 events. 856/1508 cut-off events. For 171971/171971 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8132 event pairs, 129 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 10007. Up to 1440 conditions per place. [2024-06-14 11:56:43,036 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 316 selfloop transitions, 25 changer transitions 2/345 dead transitions. [2024-06-14 11:56:43,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 4088 flow [2024-06-14 11:56:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-14 11:56:43,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:56:43,037 INFO L175 Difference]: Start difference. First operand has 329 places, 304 transitions, 2777 flow. Second operand 13 states and 143 transitions. [2024-06-14 11:56:43,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 4088 flow [2024-06-14 11:56:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 345 transitions, 3918 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:43,542 INFO L231 Difference]: Finished difference. Result has 342 places, 323 transitions, 3045 flow [2024-06-14 11:56:43,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3045, PETRI_PLACES=342, PETRI_TRANSITIONS=323} [2024-06-14 11:56:43,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-14 11:56:43,543 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 323 transitions, 3045 flow [2024-06-14 11:56:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:43,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:43,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:56:43,544 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:43,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2075188449, now seen corresponding path program 3 times [2024-06-14 11:56:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810189691] [2024-06-14 11:56:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:44,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810189691] [2024-06-14 11:56:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810189691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:44,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:44,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:44,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176630134] [2024-06-14 11:56:44,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:44,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:44,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 323 transitions, 3045 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:44,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:44,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:45,427 INFO L124 PetriNetUnfolderBase]: 861/1515 cut-off events. [2024-06-14 11:56:45,427 INFO L125 PetriNetUnfolderBase]: For 175333/175336 co-relation queries the response was YES. [2024-06-14 11:56:45,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 1515 events. 861/1515 cut-off events. For 175333/175336 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8211 event pairs, 111 based on Foata normal form. 6/1520 useless extension candidates. Maximal degree in co-relation 9795. Up to 1410 conditions per place. [2024-06-14 11:56:45,442 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 316 selfloop transitions, 33 changer transitions 2/353 dead transitions. [2024-06-14 11:56:45,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 353 transitions, 3919 flow [2024-06-14 11:56:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:56:45,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-14 11:56:45,443 INFO L175 Difference]: Start difference. First operand has 342 places, 323 transitions, 3045 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:56:45,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 353 transitions, 3919 flow [2024-06-14 11:56:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 353 transitions, 3789 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-14 11:56:46,078 INFO L231 Difference]: Finished difference. Result has 352 places, 327 transitions, 3094 flow [2024-06-14 11:56:46,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3094, PETRI_PLACES=352, PETRI_TRANSITIONS=327} [2024-06-14 11:56:46,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 320 predicate places. [2024-06-14 11:56:46,079 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 327 transitions, 3094 flow [2024-06-14 11:56:46,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:46,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:46,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:46,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:56:46,079 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:46,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1498689796, now seen corresponding path program 4 times [2024-06-14 11:56:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568089646] [2024-06-14 11:56:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:46,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:47,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568089646] [2024-06-14 11:56:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568089646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:47,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:47,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896344774] [2024-06-14 11:56:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:47,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:47,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:47,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:47,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:47,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 327 transitions, 3094 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:47,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:47,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:47,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:47,961 INFO L124 PetriNetUnfolderBase]: 908/1608 cut-off events. [2024-06-14 11:56:47,961 INFO L125 PetriNetUnfolderBase]: For 256647/256650 co-relation queries the response was YES. [2024-06-14 11:56:47,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12172 conditions, 1608 events. 908/1608 cut-off events. For 256647/256650 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8834 event pairs, 76 based on Foata normal form. 4/1611 useless extension candidates. Maximal degree in co-relation 12004. Up to 933 conditions per place. [2024-06-14 11:56:47,982 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 235 selfloop transitions, 127 changer transitions 0/364 dead transitions. [2024-06-14 11:56:47,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 364 transitions, 4317 flow [2024-06-14 11:56:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-14 11:56:47,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-14 11:56:47,983 INFO L175 Difference]: Start difference. First operand has 352 places, 327 transitions, 3094 flow. Second operand 12 states and 166 transitions. [2024-06-14 11:56:47,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 364 transitions, 4317 flow [2024-06-14 11:56:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 364 transitions, 4189 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:48,869 INFO L231 Difference]: Finished difference. Result has 355 places, 329 transitions, 3298 flow [2024-06-14 11:56:48,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3298, PETRI_PLACES=355, PETRI_TRANSITIONS=329} [2024-06-14 11:56:48,869 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 323 predicate places. [2024-06-14 11:56:48,869 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 329 transitions, 3298 flow [2024-06-14 11:56:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:48,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:48,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:56:48,870 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:48,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1498693671, now seen corresponding path program 4 times [2024-06-14 11:56:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:48,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432842767] [2024-06-14 11:56:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:48,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:50,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432842767] [2024-06-14 11:56:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432842767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:50,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:50,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:50,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999024213] [2024-06-14 11:56:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:50,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:50,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:50,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:50,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:50,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 329 transitions, 3298 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:50,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:50,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:50,941 INFO L124 PetriNetUnfolderBase]: 927/1639 cut-off events. [2024-06-14 11:56:50,941 INFO L125 PetriNetUnfolderBase]: For 276255/276258 co-relation queries the response was YES. [2024-06-14 11:56:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12987 conditions, 1639 events. 927/1639 cut-off events. For 276255/276258 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9015 event pairs, 78 based on Foata normal form. 4/1642 useless extension candidates. Maximal degree in co-relation 12818. Up to 1012 conditions per place. [2024-06-14 11:56:50,958 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 219 selfloop transitions, 143 changer transitions 0/364 dead transitions. [2024-06-14 11:56:50,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 364 transitions, 4535 flow [2024-06-14 11:56:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-14 11:56:50,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-14 11:56:50,959 INFO L175 Difference]: Start difference. First operand has 355 places, 329 transitions, 3298 flow. Second operand 12 states and 163 transitions. [2024-06-14 11:56:50,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 364 transitions, 4535 flow [2024-06-14 11:56:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 364 transitions, 4313 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:51,871 INFO L231 Difference]: Finished difference. Result has 359 places, 335 transitions, 3566 flow [2024-06-14 11:56:51,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3566, PETRI_PLACES=359, PETRI_TRANSITIONS=335} [2024-06-14 11:56:51,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-14 11:56:51,871 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 335 transitions, 3566 flow [2024-06-14 11:56:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:51,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:56:51,872 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:51,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1498693516, now seen corresponding path program 5 times [2024-06-14 11:56:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506480299] [2024-06-14 11:56:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:53,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:53,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506480299] [2024-06-14 11:56:53,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506480299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:53,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670446136] [2024-06-14 11:56:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:53,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:53,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:53,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 335 transitions, 3566 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:53,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:53,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:53,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:54,003 INFO L124 PetriNetUnfolderBase]: 951/1691 cut-off events. [2024-06-14 11:56:54,003 INFO L125 PetriNetUnfolderBase]: For 362759/362762 co-relation queries the response was YES. [2024-06-14 11:56:54,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13571 conditions, 1691 events. 951/1691 cut-off events. For 362759/362762 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9415 event pairs, 91 based on Foata normal form. 16/1706 useless extension candidates. Maximal degree in co-relation 13400. Up to 1068 conditions per place. [2024-06-14 11:56:54,024 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 234 selfloop transitions, 126 changer transitions 11/373 dead transitions. [2024-06-14 11:56:54,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 373 transitions, 4554 flow [2024-06-14 11:56:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-06-14 11:56:54,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-06-14 11:56:54,025 INFO L175 Difference]: Start difference. First operand has 359 places, 335 transitions, 3566 flow. Second operand 13 states and 177 transitions. [2024-06-14 11:56:54,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 373 transitions, 4554 flow [2024-06-14 11:56:55,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 373 transitions, 4248 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:55,068 INFO L231 Difference]: Finished difference. Result has 364 places, 333 transitions, 3529 flow [2024-06-14 11:56:55,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3529, PETRI_PLACES=364, PETRI_TRANSITIONS=333} [2024-06-14 11:56:55,068 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-14 11:56:55,068 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 333 transitions, 3529 flow [2024-06-14 11:56:55,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:55,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:55,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:56:55,069 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:55,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:55,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1498837821, now seen corresponding path program 5 times [2024-06-14 11:56:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:55,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310611809] [2024-06-14 11:56:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:56,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:56,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310611809] [2024-06-14 11:56:56,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310611809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:56,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:56,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090906497] [2024-06-14 11:56:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:56,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 333 transitions, 3529 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:56,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:56,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:57,296 INFO L124 PetriNetUnfolderBase]: 925/1641 cut-off events. [2024-06-14 11:56:57,296 INFO L125 PetriNetUnfolderBase]: For 284435/284438 co-relation queries the response was YES. [2024-06-14 11:56:57,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13317 conditions, 1641 events. 925/1641 cut-off events. For 284435/284438 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9113 event pairs, 87 based on Foata normal form. 4/1644 useless extension candidates. Maximal degree in co-relation 13145. Up to 1097 conditions per place. [2024-06-14 11:56:57,316 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 240 selfloop transitions, 120 changer transitions 3/365 dead transitions. [2024-06-14 11:56:57,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 365 transitions, 4427 flow [2024-06-14 11:56:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:56:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:56:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 11:56:57,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 11:56:57,317 INFO L175 Difference]: Start difference. First operand has 364 places, 333 transitions, 3529 flow. Second operand 13 states and 165 transitions. [2024-06-14 11:56:57,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 365 transitions, 4427 flow [2024-06-14 11:56:58,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 365 transitions, 4150 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:58,219 INFO L231 Difference]: Finished difference. Result has 367 places, 335 transitions, 3579 flow [2024-06-14 11:56:58,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3579, PETRI_PLACES=367, PETRI_TRANSITIONS=335} [2024-06-14 11:56:58,219 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-14 11:56:58,219 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 335 transitions, 3579 flow [2024-06-14 11:56:58,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:58,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:58,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:58,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:56:58,220 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:58,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1504415527, now seen corresponding path program 1 times [2024-06-14 11:56:58,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:58,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59722397] [2024-06-14 11:56:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59722397] [2024-06-14 11:56:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59722397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:59,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:56:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441042237] [2024-06-14 11:56:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:56:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:56:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:56:59,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:56:59,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 335 transitions, 3579 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:59,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:59,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:56:59,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:00,025 INFO L124 PetriNetUnfolderBase]: 927/1643 cut-off events. [2024-06-14 11:57:00,025 INFO L125 PetriNetUnfolderBase]: For 288900/288903 co-relation queries the response was YES. [2024-06-14 11:57:00,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13322 conditions, 1643 events. 927/1643 cut-off events. For 288900/288903 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9089 event pairs, 95 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 13148. Up to 1318 conditions per place. [2024-06-14 11:57:00,044 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 275 selfloop transitions, 86 changer transitions 0/363 dead transitions. [2024-06-14 11:57:00,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 363 transitions, 4407 flow [2024-06-14 11:57:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:57:00,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:57:00,045 INFO L175 Difference]: Start difference. First operand has 367 places, 335 transitions, 3579 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:57:00,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 363 transitions, 4407 flow [2024-06-14 11:57:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 363 transitions, 4094 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:01,026 INFO L231 Difference]: Finished difference. Result has 367 places, 338 transitions, 3475 flow [2024-06-14 11:57:01,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3475, PETRI_PLACES=367, PETRI_TRANSITIONS=338} [2024-06-14 11:57:01,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-14 11:57:01,026 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 338 transitions, 3475 flow [2024-06-14 11:57:01,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:01,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:01,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:01,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:57:01,027 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:01,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash -839586869, now seen corresponding path program 6 times [2024-06-14 11:57:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461755041] [2024-06-14 11:57:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461755041] [2024-06-14 11:57:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461755041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5738013] [2024-06-14 11:57:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:02,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:02,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:02,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 338 transitions, 3475 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:02,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:02,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:02,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:03,264 INFO L124 PetriNetUnfolderBase]: 926/1642 cut-off events. [2024-06-14 11:57:03,264 INFO L125 PetriNetUnfolderBase]: For 277504/277507 co-relation queries the response was YES. [2024-06-14 11:57:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12911 conditions, 1642 events. 926/1642 cut-off events. For 277504/277507 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9062 event pairs, 70 based on Foata normal form. 4/1645 useless extension candidates. Maximal degree in co-relation 12736. Up to 1063 conditions per place. [2024-06-14 11:57:03,285 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 234 selfloop transitions, 131 changer transitions 1/368 dead transitions. [2024-06-14 11:57:03,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 368 transitions, 4310 flow [2024-06-14 11:57:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 11:57:03,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:57:03,286 INFO L175 Difference]: Start difference. First operand has 367 places, 338 transitions, 3475 flow. Second operand 12 states and 159 transitions. [2024-06-14 11:57:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 368 transitions, 4310 flow [2024-06-14 11:57:04,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 368 transitions, 4072 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:04,230 INFO L231 Difference]: Finished difference. Result has 372 places, 340 transitions, 3596 flow [2024-06-14 11:57:04,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3596, PETRI_PLACES=372, PETRI_TRANSITIONS=340} [2024-06-14 11:57:04,230 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 340 predicate places. [2024-06-14 11:57:04,230 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 340 transitions, 3596 flow [2024-06-14 11:57:04,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:04,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:04,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:04,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:57:04,232 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:04,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash -839587024, now seen corresponding path program 6 times [2024-06-14 11:57:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171485223] [2024-06-14 11:57:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:05,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:05,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171485223] [2024-06-14 11:57:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171485223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:05,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:05,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557959483] [2024-06-14 11:57:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:05,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:05,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:05,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 340 transitions, 3596 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:05,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:05,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:05,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:05,911 INFO L124 PetriNetUnfolderBase]: 923/1637 cut-off events. [2024-06-14 11:57:05,911 INFO L125 PetriNetUnfolderBase]: For 267063/267066 co-relation queries the response was YES. [2024-06-14 11:57:05,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12817 conditions, 1637 events. 923/1637 cut-off events. For 267063/267066 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9064 event pairs, 125 based on Foata normal form. 4/1640 useless extension candidates. Maximal degree in co-relation 12640. Up to 1403 conditions per place. [2024-06-14 11:57:05,933 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 282 selfloop transitions, 82 changer transitions 1/367 dead transitions. [2024-06-14 11:57:05,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 367 transitions, 4431 flow [2024-06-14 11:57:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:57:05,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 11:57:05,934 INFO L175 Difference]: Start difference. First operand has 372 places, 340 transitions, 3596 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:57:05,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 367 transitions, 4431 flow [2024-06-14 11:57:06,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 367 transitions, 4145 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:06,859 INFO L231 Difference]: Finished difference. Result has 374 places, 341 transitions, 3493 flow [2024-06-14 11:57:06,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3493, PETRI_PLACES=374, PETRI_TRANSITIONS=341} [2024-06-14 11:57:06,860 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 342 predicate places. [2024-06-14 11:57:06,860 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 341 transitions, 3493 flow [2024-06-14 11:57:06,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:06,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:06,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:06,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:57:06,860 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:06,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:06,861 INFO L85 PathProgramCache]: Analyzing trace with hash 375070727, now seen corresponding path program 2 times [2024-06-14 11:57:06,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:06,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80876043] [2024-06-14 11:57:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:08,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:08,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80876043] [2024-06-14 11:57:08,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80876043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:08,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:08,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:08,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346690425] [2024-06-14 11:57:08,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:08,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:08,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:08,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:08,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 341 transitions, 3493 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:08,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:08,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:08,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:08,951 INFO L124 PetriNetUnfolderBase]: 929/1643 cut-off events. [2024-06-14 11:57:08,951 INFO L125 PetriNetUnfolderBase]: For 271416/271419 co-relation queries the response was YES. [2024-06-14 11:57:08,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 1643 events. 929/1643 cut-off events. For 271416/271419 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9025 event pairs, 77 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 12438. Up to 1289 conditions per place. [2024-06-14 11:57:08,970 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 283 selfloop transitions, 81 changer transitions 0/366 dead transitions. [2024-06-14 11:57:08,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 366 transitions, 4323 flow [2024-06-14 11:57:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:57:08,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:57:08,971 INFO L175 Difference]: Start difference. First operand has 374 places, 341 transitions, 3493 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:57:08,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 366 transitions, 4323 flow [2024-06-14 11:57:10,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 366 transitions, 4142 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-14 11:57:10,020 INFO L231 Difference]: Finished difference. Result has 372 places, 344 transitions, 3515 flow [2024-06-14 11:57:10,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3515, PETRI_PLACES=372, PETRI_TRANSITIONS=344} [2024-06-14 11:57:10,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 340 predicate places. [2024-06-14 11:57:10,020 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 344 transitions, 3515 flow [2024-06-14 11:57:10,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:10,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:10,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:10,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:57:10,020 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:10,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash 194198244, now seen corresponding path program 7 times [2024-06-14 11:57:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229221887] [2024-06-14 11:57:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229221887] [2024-06-14 11:57:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229221887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794937730] [2024-06-14 11:57:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:11,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:11,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:11,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 344 transitions, 3515 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:11,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:11,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:11,680 INFO L124 PetriNetUnfolderBase]: 933/1651 cut-off events. [2024-06-14 11:57:11,680 INFO L125 PetriNetUnfolderBase]: For 275887/275890 co-relation queries the response was YES. [2024-06-14 11:57:11,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12650 conditions, 1651 events. 933/1651 cut-off events. For 275887/275890 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9101 event pairs, 137 based on Foata normal form. 4/1654 useless extension candidates. Maximal degree in co-relation 12476. Up to 1417 conditions per place. [2024-06-14 11:57:11,702 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 289 selfloop transitions, 79 changer transitions 0/370 dead transitions. [2024-06-14 11:57:11,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 370 transitions, 4387 flow [2024-06-14 11:57:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 11:57:11,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 11:57:11,703 INFO L175 Difference]: Start difference. First operand has 372 places, 344 transitions, 3515 flow. Second operand 12 states and 143 transitions. [2024-06-14 11:57:11,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 370 transitions, 4387 flow [2024-06-14 11:57:12,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 370 transitions, 4221 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:57:12,705 INFO L231 Difference]: Finished difference. Result has 378 places, 348 transitions, 3580 flow [2024-06-14 11:57:12,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3580, PETRI_PLACES=378, PETRI_TRANSITIONS=348} [2024-06-14 11:57:12,705 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-06-14 11:57:12,705 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 348 transitions, 3580 flow [2024-06-14 11:57:12,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:12,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:12,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:57:12,706 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:12,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash 173722007, now seen corresponding path program 3 times [2024-06-14 11:57:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105358635] [2024-06-14 11:57:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:13,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:13,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105358635] [2024-06-14 11:57:13,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105358635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:13,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:13,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:13,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394990122] [2024-06-14 11:57:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:13,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:13,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:13,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:13,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 348 transitions, 3580 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:13,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:13,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:13,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:14,321 INFO L124 PetriNetUnfolderBase]: 937/1659 cut-off events. [2024-06-14 11:57:14,321 INFO L125 PetriNetUnfolderBase]: For 280350/280353 co-relation queries the response was YES. [2024-06-14 11:57:14,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12691 conditions, 1659 events. 937/1659 cut-off events. For 280350/280353 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9185 event pairs, 103 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 12516. Up to 1330 conditions per place. [2024-06-14 11:57:14,346 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 73 changer transitions 0/372 dead transitions. [2024-06-14 11:57:14,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 372 transitions, 4405 flow [2024-06-14 11:57:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:57:14,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:57:14,347 INFO L175 Difference]: Start difference. First operand has 378 places, 348 transitions, 3580 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:57:14,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 372 transitions, 4405 flow [2024-06-14 11:57:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 372 transitions, 4241 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:57:15,390 INFO L231 Difference]: Finished difference. Result has 383 places, 349 transitions, 3582 flow [2024-06-14 11:57:15,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3582, PETRI_PLACES=383, PETRI_TRANSITIONS=349} [2024-06-14 11:57:15,390 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-14 11:57:15,391 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 349 transitions, 3582 flow [2024-06-14 11:57:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:15,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:57:15,391 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:15,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 201832335, now seen corresponding path program 4 times [2024-06-14 11:57:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748394266] [2024-06-14 11:57:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748394266] [2024-06-14 11:57:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748394266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:16,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864295726] [2024-06-14 11:57:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:16,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:16,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 349 transitions, 3582 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:16,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:16,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:16,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:17,257 INFO L124 PetriNetUnfolderBase]: 948/1680 cut-off events. [2024-06-14 11:57:17,257 INFO L125 PetriNetUnfolderBase]: For 300015/300018 co-relation queries the response was YES. [2024-06-14 11:57:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13050 conditions, 1680 events. 948/1680 cut-off events. For 300015/300018 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9335 event pairs, 104 based on Foata normal form. 4/1683 useless extension candidates. Maximal degree in co-relation 12874. Up to 1316 conditions per place. [2024-06-14 11:57:17,277 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 292 selfloop transitions, 80 changer transitions 0/374 dead transitions. [2024-06-14 11:57:17,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 374 transitions, 4671 flow [2024-06-14 11:57:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:57:17,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:57:17,279 INFO L175 Difference]: Start difference. First operand has 383 places, 349 transitions, 3582 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:57:17,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 374 transitions, 4671 flow [2024-06-14 11:57:18,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 374 transitions, 4502 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:57:18,247 INFO L231 Difference]: Finished difference. Result has 384 places, 351 transitions, 3607 flow [2024-06-14 11:57:18,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3607, PETRI_PLACES=384, PETRI_TRANSITIONS=351} [2024-06-14 11:57:18,247 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 352 predicate places. [2024-06-14 11:57:18,247 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 351 transitions, 3607 flow [2024-06-14 11:57:18,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:18,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:18,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:57:18,249 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:18,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash 194413725, now seen corresponding path program 5 times [2024-06-14 11:57:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972170466] [2024-06-14 11:57:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:19,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972170466] [2024-06-14 11:57:19,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972170466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:19,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:19,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423205986] [2024-06-14 11:57:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:19,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:19,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:19,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 351 transitions, 3607 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:19,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:19,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:19,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:20,198 INFO L124 PetriNetUnfolderBase]: 945/1675 cut-off events. [2024-06-14 11:57:20,198 INFO L125 PetriNetUnfolderBase]: For 288708/288711 co-relation queries the response was YES. [2024-06-14 11:57:20,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12819 conditions, 1675 events. 945/1675 cut-off events. For 288708/288711 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9292 event pairs, 79 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 12642. Up to 1321 conditions per place. [2024-06-14 11:57:20,217 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 292 selfloop transitions, 80 changer transitions 0/374 dead transitions. [2024-06-14 11:57:20,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 374 transitions, 4422 flow [2024-06-14 11:57:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:57:20,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:57:20,218 INFO L175 Difference]: Start difference. First operand has 384 places, 351 transitions, 3607 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:57:20,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 374 transitions, 4422 flow [2024-06-14 11:57:21,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 374 transitions, 4304 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:57:21,268 INFO L231 Difference]: Finished difference. Result has 388 places, 351 transitions, 3653 flow [2024-06-14 11:57:21,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3653, PETRI_PLACES=388, PETRI_TRANSITIONS=351} [2024-06-14 11:57:21,268 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2024-06-14 11:57:21,268 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 351 transitions, 3653 flow [2024-06-14 11:57:21,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:21,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:21,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:21,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:57:21,269 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:21,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash -5251416, now seen corresponding path program 8 times [2024-06-14 11:57:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:21,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103439490] [2024-06-14 11:57:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103439490] [2024-06-14 11:57:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103439490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:22,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:22,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643787412] [2024-06-14 11:57:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:22,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:22,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 351 transitions, 3653 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:22,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:22,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:22,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:23,376 INFO L124 PetriNetUnfolderBase]: 956/1696 cut-off events. [2024-06-14 11:57:23,377 INFO L125 PetriNetUnfolderBase]: For 310647/310650 co-relation queries the response was YES. [2024-06-14 11:57:23,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 1696 events. 956/1696 cut-off events. For 310647/310650 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9461 event pairs, 132 based on Foata normal form. 4/1699 useless extension candidates. Maximal degree in co-relation 13268. Up to 1337 conditions per place. [2024-06-14 11:57:23,399 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 279 selfloop transitions, 105 changer transitions 0/386 dead transitions. [2024-06-14 11:57:23,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 386 transitions, 4893 flow [2024-06-14 11:57:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:57:23,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:57:23,400 INFO L175 Difference]: Start difference. First operand has 388 places, 351 transitions, 3653 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:57:23,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 386 transitions, 4893 flow [2024-06-14 11:57:24,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 386 transitions, 4695 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:24,402 INFO L231 Difference]: Finished difference. Result has 390 places, 363 transitions, 3894 flow [2024-06-14 11:57:24,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=390, PETRI_TRANSITIONS=363} [2024-06-14 11:57:24,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-14 11:57:24,402 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 363 transitions, 3894 flow [2024-06-14 11:57:24,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:24,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:24,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:24,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:57:24,402 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:24,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1756981827, now seen corresponding path program 7 times [2024-06-14 11:57:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:24,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171782380] [2024-06-14 11:57:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:25,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171782380] [2024-06-14 11:57:25,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171782380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:25,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:25,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337815787] [2024-06-14 11:57:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:25,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:25,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:25,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 363 transitions, 3894 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:25,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:25,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:25,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:26,505 INFO L124 PetriNetUnfolderBase]: 968/1716 cut-off events. [2024-06-14 11:57:26,506 INFO L125 PetriNetUnfolderBase]: For 317035/317038 co-relation queries the response was YES. [2024-06-14 11:57:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13878 conditions, 1716 events. 968/1716 cut-off events. For 317035/317038 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9605 event pairs, 90 based on Foata normal form. 4/1719 useless extension candidates. Maximal degree in co-relation 13696. Up to 1166 conditions per place. [2024-06-14 11:57:26,526 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 275 selfloop transitions, 116 changer transitions 0/393 dead transitions. [2024-06-14 11:57:26,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 393 transitions, 4864 flow [2024-06-14 11:57:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:57:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:57:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 11:57:26,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-14 11:57:26,527 INFO L175 Difference]: Start difference. First operand has 390 places, 363 transitions, 3894 flow. Second operand 13 states and 166 transitions. [2024-06-14 11:57:26,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 393 transitions, 4864 flow [2024-06-14 11:57:27,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 393 transitions, 4756 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 11:57:27,694 INFO L231 Difference]: Finished difference. Result has 398 places, 367 transitions, 4137 flow [2024-06-14 11:57:27,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3786, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4137, PETRI_PLACES=398, PETRI_TRANSITIONS=367} [2024-06-14 11:57:27,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 366 predicate places. [2024-06-14 11:57:27,695 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 367 transitions, 4137 flow [2024-06-14 11:57:27,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:27,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:27,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:57:27,695 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:27,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash 258834, now seen corresponding path program 9 times [2024-06-14 11:57:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454471061] [2024-06-14 11:57:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:28,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:28,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454471061] [2024-06-14 11:57:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454471061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:28,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412175438] [2024-06-14 11:57:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:28,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:28,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 367 transitions, 4137 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:28,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:28,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:28,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:29,440 INFO L124 PetriNetUnfolderBase]: 972/1724 cut-off events. [2024-06-14 11:57:29,440 INFO L125 PetriNetUnfolderBase]: For 321842/321845 co-relation queries the response was YES. [2024-06-14 11:57:29,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 1724 events. 972/1724 cut-off events. For 321842/321845 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9654 event pairs, 132 based on Foata normal form. 4/1727 useless extension candidates. Maximal degree in co-relation 13997. Up to 1490 conditions per place. [2024-06-14 11:57:29,461 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 312 selfloop transitions, 76 changer transitions 0/390 dead transitions. [2024-06-14 11:57:29,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 390 transitions, 5023 flow [2024-06-14 11:57:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:57:29,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 11:57:29,462 INFO L175 Difference]: Start difference. First operand has 398 places, 367 transitions, 4137 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:57:29,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 390 transitions, 5023 flow [2024-06-14 11:57:30,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 390 transitions, 4712 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-14 11:57:30,601 INFO L231 Difference]: Finished difference. Result has 400 places, 368 transitions, 4016 flow [2024-06-14 11:57:30,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4016, PETRI_PLACES=400, PETRI_TRANSITIONS=368} [2024-06-14 11:57:30,601 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-14 11:57:30,601 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 368 transitions, 4016 flow [2024-06-14 11:57:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:30,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:30,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:30,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:57:30,602 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:30,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1956283617, now seen corresponding path program 8 times [2024-06-14 11:57:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:30,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040273300] [2024-06-14 11:57:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:32,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040273300] [2024-06-14 11:57:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040273300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689585892] [2024-06-14 11:57:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:32,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:32,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:32,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 368 transitions, 4016 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:32,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:32,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:32,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:32,928 INFO L124 PetriNetUnfolderBase]: 978/1734 cut-off events. [2024-06-14 11:57:32,928 INFO L125 PetriNetUnfolderBase]: For 326694/326697 co-relation queries the response was YES. [2024-06-14 11:57:32,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14148 conditions, 1734 events. 978/1734 cut-off events. For 326694/326697 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9757 event pairs, 100 based on Foata normal form. 4/1737 useless extension candidates. Maximal degree in co-relation 13963. Up to 1188 conditions per place. [2024-06-14 11:57:32,950 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 279 selfloop transitions, 115 changer transitions 0/396 dead transitions. [2024-06-14 11:57:32,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 396 transitions, 4972 flow [2024-06-14 11:57:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:57:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:57:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-14 11:57:32,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-14 11:57:32,951 INFO L175 Difference]: Start difference. First operand has 400 places, 368 transitions, 4016 flow. Second operand 13 states and 167 transitions. [2024-06-14 11:57:32,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 396 transitions, 4972 flow [2024-06-14 11:57:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 396 transitions, 4772 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 11:57:34,170 INFO L231 Difference]: Finished difference. Result has 403 places, 370 transitions, 4145 flow [2024-06-14 11:57:34,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4145, PETRI_PLACES=403, PETRI_TRANSITIONS=370} [2024-06-14 11:57:34,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-14 11:57:34,171 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 370 transitions, 4145 flow [2024-06-14 11:57:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:34,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:34,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:34,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:57:34,171 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:34,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1956283772, now seen corresponding path program 10 times [2024-06-14 11:57:34,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:34,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312378851] [2024-06-14 11:57:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:34,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:35,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312378851] [2024-06-14 11:57:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312378851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:35,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327977164] [2024-06-14 11:57:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:35,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:35,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 370 transitions, 4145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:35,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:35,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:35,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:36,098 INFO L124 PetriNetUnfolderBase]: 1002/1786 cut-off events. [2024-06-14 11:57:36,099 INFO L125 PetriNetUnfolderBase]: For 433515/433518 co-relation queries the response was YES. [2024-06-14 11:57:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14632 conditions, 1786 events. 1002/1786 cut-off events. For 433515/433518 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10129 event pairs, 98 based on Foata normal form. 16/1801 useless extension candidates. Maximal degree in co-relation 14446. Up to 1188 conditions per place. [2024-06-14 11:57:36,119 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 278 selfloop transitions, 109 changer transitions 12/401 dead transitions. [2024-06-14 11:57:36,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 401 transitions, 5163 flow [2024-06-14 11:57:36,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-14 11:57:36,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-14 11:57:36,120 INFO L175 Difference]: Start difference. First operand has 403 places, 370 transitions, 4145 flow. Second operand 12 states and 163 transitions. [2024-06-14 11:57:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 401 transitions, 5163 flow [2024-06-14 11:57:37,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 401 transitions, 4850 flow, removed 44 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:37,461 INFO L231 Difference]: Finished difference. Result has 404 places, 366 transitions, 4046 flow [2024-06-14 11:57:37,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4046, PETRI_PLACES=404, PETRI_TRANSITIONS=366} [2024-06-14 11:57:37,462 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-14 11:57:37,462 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 366 transitions, 4046 flow [2024-06-14 11:57:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:37,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:37,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:57:37,463 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:37,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1950921237, now seen corresponding path program 9 times [2024-06-14 11:57:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705684187] [2024-06-14 11:57:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705684187] [2024-06-14 11:57:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705684187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:38,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708280467] [2024-06-14 11:57:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:38,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:38,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 366 transitions, 4046 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:38,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:38,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:38,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:39,280 INFO L124 PetriNetUnfolderBase]: 974/1730 cut-off events. [2024-06-14 11:57:39,280 INFO L125 PetriNetUnfolderBase]: For 336903/336906 co-relation queries the response was YES. [2024-06-14 11:57:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14288 conditions, 1730 events. 974/1730 cut-off events. For 336903/336906 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9724 event pairs, 81 based on Foata normal form. 4/1733 useless extension candidates. Maximal degree in co-relation 14102. Up to 1142 conditions per place. [2024-06-14 11:57:39,302 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 268 selfloop transitions, 123 changer transitions 0/393 dead transitions. [2024-06-14 11:57:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 393 transitions, 4998 flow [2024-06-14 11:57:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 11:57:39,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:57:39,303 INFO L175 Difference]: Start difference. First operand has 404 places, 366 transitions, 4046 flow. Second operand 12 states and 162 transitions. [2024-06-14 11:57:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 393 transitions, 4998 flow [2024-06-14 11:57:40,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 393 transitions, 4735 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 11:57:40,475 INFO L231 Difference]: Finished difference. Result has 403 places, 368 transitions, 4132 flow [2024-06-14 11:57:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4132, PETRI_PLACES=403, PETRI_TRANSITIONS=368} [2024-06-14 11:57:40,475 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-14 11:57:40,475 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 368 transitions, 4132 flow [2024-06-14 11:57:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:40,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:40,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:57:40,476 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:40,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1956427767, now seen corresponding path program 10 times [2024-06-14 11:57:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498437146] [2024-06-14 11:57:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:41,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:41,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498437146] [2024-06-14 11:57:41,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498437146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:41,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:41,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465698270] [2024-06-14 11:57:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:41,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:41,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 368 transitions, 4132 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:41,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:41,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:41,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:42,303 INFO L124 PetriNetUnfolderBase]: 980/1740 cut-off events. [2024-06-14 11:57:42,304 INFO L125 PetriNetUnfolderBase]: For 342850/342853 co-relation queries the response was YES. [2024-06-14 11:57:42,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 1740 events. 980/1740 cut-off events. For 342850/342853 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9771 event pairs, 79 based on Foata normal form. 4/1743 useless extension candidates. Maximal degree in co-relation 14305. Up to 1110 conditions per place. [2024-06-14 11:57:42,339 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 254 selfloop transitions, 138 changer transitions 0/394 dead transitions. [2024-06-14 11:57:42,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 394 transitions, 5086 flow [2024-06-14 11:57:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 11:57:42,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 11:57:42,341 INFO L175 Difference]: Start difference. First operand has 403 places, 368 transitions, 4132 flow. Second operand 12 states and 160 transitions. [2024-06-14 11:57:42,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 394 transitions, 5086 flow [2024-06-14 11:57:43,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 394 transitions, 4753 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-14 11:57:43,638 INFO L231 Difference]: Finished difference. Result has 405 places, 370 transitions, 4182 flow [2024-06-14 11:57:43,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4182, PETRI_PLACES=405, PETRI_TRANSITIONS=370} [2024-06-14 11:57:43,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 373 predicate places. [2024-06-14 11:57:43,639 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 370 transitions, 4182 flow [2024-06-14 11:57:43,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:43,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:43,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:57:43,639 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:43,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1956427922, now seen corresponding path program 11 times [2024-06-14 11:57:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:43,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533241432] [2024-06-14 11:57:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533241432] [2024-06-14 11:57:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533241432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181622007] [2024-06-14 11:57:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:44,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:44,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 370 transitions, 4182 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:44,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:44,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:44,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:45,603 INFO L124 PetriNetUnfolderBase]: 977/1735 cut-off events. [2024-06-14 11:57:45,603 INFO L125 PetriNetUnfolderBase]: For 328744/328747 co-relation queries the response was YES. [2024-06-14 11:57:45,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 1735 events. 977/1735 cut-off events. For 328744/328747 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9765 event pairs, 91 based on Foata normal form. 4/1738 useless extension candidates. Maximal degree in co-relation 13976. Up to 1165 conditions per place. [2024-06-14 11:57:45,626 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 271 selfloop transitions, 122 changer transitions 0/395 dead transitions. [2024-06-14 11:57:45,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 395 transitions, 5040 flow [2024-06-14 11:57:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:57:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:57:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 11:57:45,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 11:57:45,627 INFO L175 Difference]: Start difference. First operand has 405 places, 370 transitions, 4182 flow. Second operand 13 states and 165 transitions. [2024-06-14 11:57:45,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 395 transitions, 5040 flow [2024-06-14 11:57:46,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 395 transitions, 4587 flow, removed 62 selfloop flow, removed 12 redundant places. [2024-06-14 11:57:46,925 INFO L231 Difference]: Finished difference. Result has 406 places, 370 transitions, 3979 flow [2024-06-14 11:57:46,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3729, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3979, PETRI_PLACES=406, PETRI_TRANSITIONS=370} [2024-06-14 11:57:46,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-14 11:57:46,926 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 370 transitions, 3979 flow [2024-06-14 11:57:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:46,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:46,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:57:46,926 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:46,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash -91004668, now seen corresponding path program 12 times [2024-06-14 11:57:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610157845] [2024-06-14 11:57:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610157845] [2024-06-14 11:57:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610157845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:48,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833723778] [2024-06-14 11:57:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:48,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:48,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:48,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 370 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:48,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:48,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:48,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:49,002 INFO L124 PetriNetUnfolderBase]: 1024/1830 cut-off events. [2024-06-14 11:57:49,002 INFO L125 PetriNetUnfolderBase]: For 457933/457933 co-relation queries the response was YES. [2024-06-14 11:57:49,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 1830 events. 1024/1830 cut-off events. For 457933/457933 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10352 event pairs, 122 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 16246. Up to 1114 conditions per place. [2024-06-14 11:57:49,029 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 273 selfloop transitions, 126 changer transitions 0/401 dead transitions. [2024-06-14 11:57:49,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 401 transitions, 5579 flow [2024-06-14 11:57:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-14 11:57:49,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-14 11:57:49,030 INFO L175 Difference]: Start difference. First operand has 406 places, 370 transitions, 3979 flow. Second operand 12 states and 163 transitions. [2024-06-14 11:57:49,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 401 transitions, 5579 flow [2024-06-14 11:57:50,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 401 transitions, 5319 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:57:50,727 INFO L231 Difference]: Finished difference. Result has 406 places, 372 transitions, 4057 flow [2024-06-14 11:57:50,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3723, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4057, PETRI_PLACES=406, PETRI_TRANSITIONS=372} [2024-06-14 11:57:50,727 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-14 11:57:50,727 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 372 transitions, 4057 flow [2024-06-14 11:57:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:50,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:50,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:57:50,728 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:50,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -90856798, now seen corresponding path program 13 times [2024-06-14 11:57:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332265581] [2024-06-14 11:57:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332265581] [2024-06-14 11:57:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332265581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:51,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:51,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:51,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472145271] [2024-06-14 11:57:51,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:51,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:51,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:52,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:52,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 372 transitions, 4057 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:52,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:52,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:52,659 INFO L124 PetriNetUnfolderBase]: 1048/1882 cut-off events. [2024-06-14 11:57:52,659 INFO L125 PetriNetUnfolderBase]: For 566373/566373 co-relation queries the response was YES. [2024-06-14 11:57:52,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16845 conditions, 1882 events. 1048/1882 cut-off events. For 566373/566373 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10784 event pairs, 135 based on Foata normal form. 14/1895 useless extension candidates. Maximal degree in co-relation 16657. Up to 1288 conditions per place. [2024-06-14 11:57:52,685 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 280 selfloop transitions, 106 changer transitions 12/400 dead transitions. [2024-06-14 11:57:52,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 400 transitions, 5077 flow [2024-06-14 11:57:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 11:57:52,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-14 11:57:52,686 INFO L175 Difference]: Start difference. First operand has 406 places, 372 transitions, 4057 flow. Second operand 12 states and 161 transitions. [2024-06-14 11:57:52,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 400 transitions, 5077 flow [2024-06-14 11:57:54,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 400 transitions, 4868 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:54,480 INFO L231 Difference]: Finished difference. Result has 410 places, 368 transitions, 4056 flow [2024-06-14 11:57:54,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4056, PETRI_PLACES=410, PETRI_TRANSITIONS=368} [2024-06-14 11:57:54,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-14 11:57:54,480 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 368 transitions, 4056 flow [2024-06-14 11:57:54,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:54,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:54,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:54,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:57:54,481 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:54,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1602868569, now seen corresponding path program 6 times [2024-06-14 11:57:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030784437] [2024-06-14 11:57:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:54,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030784437] [2024-06-14 11:57:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030784437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:55,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572672068] [2024-06-14 11:57:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:55,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:55,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 368 transitions, 4056 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:55,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:55,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:55,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:56,553 INFO L124 PetriNetUnfolderBase]: 1030/1844 cut-off events. [2024-06-14 11:57:56,553 INFO L125 PetriNetUnfolderBase]: For 463790/463790 co-relation queries the response was YES. [2024-06-14 11:57:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16705 conditions, 1844 events. 1030/1844 cut-off events. For 463790/463790 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10488 event pairs, 107 based on Foata normal form. 2/1845 useless extension candidates. Maximal degree in co-relation 16515. Up to 1505 conditions per place. [2024-06-14 11:57:56,578 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 75 changer transitions 0/393 dead transitions. [2024-06-14 11:57:56,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 393 transitions, 4971 flow [2024-06-14 11:57:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:57:56,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:57:56,579 INFO L175 Difference]: Start difference. First operand has 410 places, 368 transitions, 4056 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:57:56,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 393 transitions, 4971 flow [2024-06-14 11:57:58,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 393 transitions, 4721 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:58,110 INFO L231 Difference]: Finished difference. Result has 410 places, 373 transitions, 4032 flow [2024-06-14 11:57:58,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4032, PETRI_PLACES=410, PETRI_TRANSITIONS=373} [2024-06-14 11:57:58,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-14 11:57:58,111 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 373 transitions, 4032 flow [2024-06-14 11:57:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:58,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:58,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:57:58,111 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:58,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1860179433, now seen corresponding path program 11 times [2024-06-14 11:57:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:58,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110540850] [2024-06-14 11:57:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:59,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:59,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110540850] [2024-06-14 11:57:59,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110540850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:59,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:59,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:57:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682763423] [2024-06-14 11:57:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:57:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:57:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:57:59,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:57:59,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 373 transitions, 4032 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:59,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:59,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:57:59,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:59,883 INFO L124 PetriNetUnfolderBase]: 1046/1870 cut-off events. [2024-06-14 11:57:59,883 INFO L125 PetriNetUnfolderBase]: For 487878/487878 co-relation queries the response was YES. [2024-06-14 11:57:59,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17331 conditions, 1870 events. 1046/1870 cut-off events. For 487878/487878 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10668 event pairs, 125 based on Foata normal form. 2/1871 useless extension candidates. Maximal degree in co-relation 17140. Up to 1221 conditions per place. [2024-06-14 11:57:59,909 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 261 selfloop transitions, 136 changer transitions 0/399 dead transitions. [2024-06-14 11:57:59,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 399 transitions, 5368 flow [2024-06-14 11:57:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:57:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:57:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 11:57:59,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:57:59,910 INFO L175 Difference]: Start difference. First operand has 410 places, 373 transitions, 4032 flow. Second operand 12 states and 159 transitions. [2024-06-14 11:57:59,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 399 transitions, 5368 flow [2024-06-14 11:58:01,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 399 transitions, 5219 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:58:01,760 INFO L231 Difference]: Finished difference. Result has 416 places, 377 transitions, 4368 flow [2024-06-14 11:58:01,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4368, PETRI_PLACES=416, PETRI_TRANSITIONS=377} [2024-06-14 11:58:01,761 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-14 11:58:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 377 transitions, 4368 flow [2024-06-14 11:58:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:01,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:01,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:01,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:58:01,761 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2059840699, now seen corresponding path program 7 times [2024-06-14 11:58:01,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600694455] [2024-06-14 11:58:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:03,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600694455] [2024-06-14 11:58:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600694455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:03,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:03,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869319540] [2024-06-14 11:58:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:03,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:03,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:03,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:03,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:03,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 377 transitions, 4368 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:03,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:03,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:03,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:03,780 INFO L124 PetriNetUnfolderBase]: 1056/1888 cut-off events. [2024-06-14 11:58:03,780 INFO L125 PetriNetUnfolderBase]: For 501230/501230 co-relation queries the response was YES. [2024-06-14 11:58:03,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17669 conditions, 1888 events. 1056/1888 cut-off events. For 501230/501230 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10809 event pairs, 118 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 17477. Up to 1520 conditions per place. [2024-06-14 11:58:03,802 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 320 selfloop transitions, 79 changer transitions 0/401 dead transitions. [2024-06-14 11:58:03,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 401 transitions, 5278 flow [2024-06-14 11:58:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:58:03,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:58:03,803 INFO L175 Difference]: Start difference. First operand has 416 places, 377 transitions, 4368 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:58:03,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 401 transitions, 5278 flow [2024-06-14 11:58:05,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 401 transitions, 4996 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-14 11:58:05,635 INFO L231 Difference]: Finished difference. Result has 419 places, 380 transitions, 4295 flow [2024-06-14 11:58:05,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4295, PETRI_PLACES=419, PETRI_TRANSITIONS=380} [2024-06-14 11:58:05,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 387 predicate places. [2024-06-14 11:58:05,635 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 380 transitions, 4295 flow [2024-06-14 11:58:05,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:05,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:05,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:05,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:58:05,635 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:05,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1860179278, now seen corresponding path program 14 times [2024-06-14 11:58:05,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:05,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167122448] [2024-06-14 11:58:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:05,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167122448] [2024-06-14 11:58:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167122448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019530266] [2024-06-14 11:58:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:07,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:07,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 380 transitions, 4295 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:07,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:07,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:07,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:08,015 INFO L124 PetriNetUnfolderBase]: 1060/1896 cut-off events. [2024-06-14 11:58:08,016 INFO L125 PetriNetUnfolderBase]: For 505841/505841 co-relation queries the response was YES. [2024-06-14 11:58:08,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 1896 events. 1060/1896 cut-off events. For 505841/505841 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10891 event pairs, 160 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 17503. Up to 1556 conditions per place. [2024-06-14 11:58:08,044 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 295 selfloop transitions, 102 changer transitions 0/399 dead transitions. [2024-06-14 11:58:08,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 399 transitions, 5199 flow [2024-06-14 11:58:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:58:08,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 11:58:08,045 INFO L175 Difference]: Start difference. First operand has 419 places, 380 transitions, 4295 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:58:08,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 399 transitions, 5199 flow [2024-06-14 11:58:09,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 399 transitions, 5019 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:58:09,868 INFO L231 Difference]: Finished difference. Result has 422 places, 381 transitions, 4371 flow [2024-06-14 11:58:09,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4371, PETRI_PLACES=422, PETRI_TRANSITIONS=381} [2024-06-14 11:58:09,869 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 390 predicate places. [2024-06-14 11:58:09,869 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 381 transitions, 4371 flow [2024-06-14 11:58:09,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:09,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:09,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:09,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:58:09,869 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:09,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash 340902347, now seen corresponding path program 8 times [2024-06-14 11:58:09,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529932700] [2024-06-14 11:58:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:09,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:11,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529932700] [2024-06-14 11:58:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529932700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:11,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:11,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:11,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864544652] [2024-06-14 11:58:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:11,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:11,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:11,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:11,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 381 transitions, 4371 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:11,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:11,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:11,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:11,870 INFO L124 PetriNetUnfolderBase]: 1064/1904 cut-off events. [2024-06-14 11:58:11,870 INFO L125 PetriNetUnfolderBase]: For 508302/508302 co-relation queries the response was YES. [2024-06-14 11:58:11,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17805 conditions, 1904 events. 1064/1904 cut-off events. For 508302/508302 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10946 event pairs, 112 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 17610. Up to 1536 conditions per place. [2024-06-14 11:58:11,897 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 317 selfloop transitions, 83 changer transitions 0/402 dead transitions. [2024-06-14 11:58:11,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 402 transitions, 5256 flow [2024-06-14 11:58:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:58:11,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:58:11,898 INFO L175 Difference]: Start difference. First operand has 422 places, 381 transitions, 4371 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:58:11,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 402 transitions, 5256 flow [2024-06-14 11:58:13,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 402 transitions, 5068 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:58:13,757 INFO L231 Difference]: Finished difference. Result has 426 places, 382 transitions, 4376 flow [2024-06-14 11:58:13,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4184, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4376, PETRI_PLACES=426, PETRI_TRANSITIONS=382} [2024-06-14 11:58:13,758 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-14 11:58:13,758 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 382 transitions, 4376 flow [2024-06-14 11:58:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:13,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:13,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:13,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:58:13,758 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:13,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2067250009, now seen corresponding path program 9 times [2024-06-14 11:58:13,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:13,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800289816] [2024-06-14 11:58:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:13,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800289816] [2024-06-14 11:58:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800289816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:15,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:15,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955017096] [2024-06-14 11:58:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:15,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:15,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:15,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 382 transitions, 4376 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:15,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:15,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:15,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:15,849 INFO L124 PetriNetUnfolderBase]: 1068/1912 cut-off events. [2024-06-14 11:58:15,849 INFO L125 PetriNetUnfolderBase]: For 512873/512873 co-relation queries the response was YES. [2024-06-14 11:58:15,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17814 conditions, 1912 events. 1068/1912 cut-off events. For 512873/512873 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11006 event pairs, 112 based on Foata normal form. 2/1913 useless extension candidates. Maximal degree in co-relation 17618. Up to 1544 conditions per place. [2024-06-14 11:58:15,875 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 80 changer transitions 0/403 dead transitions. [2024-06-14 11:58:15,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 5264 flow [2024-06-14 11:58:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:58:15,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:58:15,876 INFO L175 Difference]: Start difference. First operand has 426 places, 382 transitions, 4376 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:58:15,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 5264 flow [2024-06-14 11:58:17,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 403 transitions, 5078 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:17,744 INFO L231 Difference]: Finished difference. Result has 428 places, 383 transitions, 4378 flow [2024-06-14 11:58:17,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4378, PETRI_PLACES=428, PETRI_TRANSITIONS=383} [2024-06-14 11:58:17,745 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-14 11:58:17,745 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 383 transitions, 4378 flow [2024-06-14 11:58:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:17,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:17,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:17,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:58:17,745 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:17,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1865901289, now seen corresponding path program 10 times [2024-06-14 11:58:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751125189] [2024-06-14 11:58:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:18,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751125189] [2024-06-14 11:58:18,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751125189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:18,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:18,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698553115] [2024-06-14 11:58:18,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:18,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:18,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:18,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 383 transitions, 4378 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:18,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:18,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:19,544 INFO L124 PetriNetUnfolderBase]: 1072/1920 cut-off events. [2024-06-14 11:58:19,544 INFO L125 PetriNetUnfolderBase]: For 520074/520074 co-relation queries the response was YES. [2024-06-14 11:58:19,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 1920 events. 1072/1920 cut-off events. For 520074/520074 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11080 event pairs, 123 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 17694. Up to 1577 conditions per place. [2024-06-14 11:58:19,571 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 77 changer transitions 0/404 dead transitions. [2024-06-14 11:58:19,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 404 transitions, 5270 flow [2024-06-14 11:58:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:58:19,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:58:19,572 INFO L175 Difference]: Start difference. First operand has 428 places, 383 transitions, 4378 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:58:19,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 404 transitions, 5270 flow [2024-06-14 11:58:21,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 404 transitions, 5101 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:58:21,467 INFO L231 Difference]: Finished difference. Result has 432 places, 384 transitions, 4393 flow [2024-06-14 11:58:21,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4393, PETRI_PLACES=432, PETRI_TRANSITIONS=384} [2024-06-14 11:58:21,467 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 400 predicate places. [2024-06-14 11:58:21,467 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 384 transitions, 4393 flow [2024-06-14 11:58:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:21,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:21,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:21,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:58:21,468 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:21,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 348320957, now seen corresponding path program 11 times [2024-06-14 11:58:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:21,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564289711] [2024-06-14 11:58:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564289711] [2024-06-14 11:58:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564289711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:22,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:22,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859109176] [2024-06-14 11:58:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:22,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:22,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:22,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 384 transitions, 4393 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:22,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:22,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:22,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:23,340 INFO L124 PetriNetUnfolderBase]: 1076/1928 cut-off events. [2024-06-14 11:58:23,340 INFO L125 PetriNetUnfolderBase]: For 527421/527421 co-relation queries the response was YES. [2024-06-14 11:58:23,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17974 conditions, 1928 events. 1076/1928 cut-off events. For 527421/527421 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11130 event pairs, 116 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 17776. Up to 1565 conditions per place. [2024-06-14 11:58:23,371 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 324 selfloop transitions, 79 changer transitions 0/405 dead transitions. [2024-06-14 11:58:23,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 405 transitions, 5287 flow [2024-06-14 11:58:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:58:23,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:58:23,372 INFO L175 Difference]: Start difference. First operand has 432 places, 384 transitions, 4393 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:58:23,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 405 transitions, 5287 flow [2024-06-14 11:58:25,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 405 transitions, 5099 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:25,015 INFO L231 Difference]: Finished difference. Result has 433 places, 385 transitions, 4395 flow [2024-06-14 11:58:25,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=433, PETRI_TRANSITIONS=385} [2024-06-14 11:58:25,015 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-14 11:58:25,016 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 385 transitions, 4395 flow [2024-06-14 11:58:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:25,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:25,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:25,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:58:25,016 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:25,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -85494418, now seen corresponding path program 15 times [2024-06-14 11:58:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096664387] [2024-06-14 11:58:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:26,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096664387] [2024-06-14 11:58:26,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096664387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:26,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:26,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017358450] [2024-06-14 11:58:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:26,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:26,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:26,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 385 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:26,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:26,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:26,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:26,844 INFO L124 PetriNetUnfolderBase]: 1100/1980 cut-off events. [2024-06-14 11:58:26,844 INFO L125 PetriNetUnfolderBase]: For 650895/650895 co-relation queries the response was YES. [2024-06-14 11:58:26,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18381 conditions, 1980 events. 1100/1980 cut-off events. For 650895/650895 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11548 event pairs, 143 based on Foata normal form. 14/1993 useless extension candidates. Maximal degree in co-relation 18182. Up to 1368 conditions per place. [2024-06-14 11:58:26,873 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 296 selfloop transitions, 102 changer transitions 13/413 dead transitions. [2024-06-14 11:58:26,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 413 transitions, 5437 flow [2024-06-14 11:58:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 11:58:26,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:58:26,874 INFO L175 Difference]: Start difference. First operand has 433 places, 385 transitions, 4395 flow. Second operand 12 states and 162 transitions. [2024-06-14 11:58:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 413 transitions, 5437 flow [2024-06-14 11:58:28,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 413 transitions, 5257 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:28,723 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4395 flow [2024-06-14 11:58:28,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4395, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2024-06-14 11:58:28,724 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-14 11:58:28,724 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4395 flow [2024-06-14 11:58:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:28,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:28,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:58:28,724 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:28,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash -90856643, now seen corresponding path program 12 times [2024-06-14 11:58:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318405963] [2024-06-14 11:58:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:30,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:30,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318405963] [2024-06-14 11:58:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318405963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:30,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:30,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011359602] [2024-06-14 11:58:30,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:30,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:30,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:30,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:30,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:30,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:30,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:30,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:31,025 INFO L124 PetriNetUnfolderBase]: 1068/1920 cut-off events. [2024-06-14 11:58:31,025 INFO L125 PetriNetUnfolderBase]: For 544239/544239 co-relation queries the response was YES. [2024-06-14 11:58:31,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18118 conditions, 1920 events. 1068/1920 cut-off events. For 544239/544239 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11137 event pairs, 132 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 17918. Up to 1378 conditions per place. [2024-06-14 11:58:31,055 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 290 selfloop transitions, 110 changer transitions 0/402 dead transitions. [2024-06-14 11:58:31,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 402 transitions, 5343 flow [2024-06-14 11:58:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 11:58:31,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:58:31,056 INFO L175 Difference]: Start difference. First operand has 436 places, 380 transitions, 4395 flow. Second operand 12 states and 152 transitions. [2024-06-14 11:58:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 402 transitions, 5343 flow [2024-06-14 11:58:32,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 402 transitions, 5101 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-14 11:58:32,729 INFO L231 Difference]: Finished difference. Result has 437 places, 382 transitions, 4472 flow [2024-06-14 11:58:32,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4472, PETRI_PLACES=437, PETRI_TRANSITIONS=382} [2024-06-14 11:58:32,730 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 405 predicate places. [2024-06-14 11:58:32,730 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 382 transitions, 4472 flow [2024-06-14 11:58:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:32,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:32,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:58:32,730 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:32,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1157557965, now seen corresponding path program 13 times [2024-06-14 11:58:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289120729] [2024-06-14 11:58:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289120729] [2024-06-14 11:58:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289120729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:33,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:33,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:33,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022023009] [2024-06-14 11:58:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:33,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:33,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:33,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:33,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 382 transitions, 4472 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:33,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:33,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:33,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:34,741 INFO L124 PetriNetUnfolderBase]: 1080/1940 cut-off events. [2024-06-14 11:58:34,741 INFO L125 PetriNetUnfolderBase]: For 547337/547337 co-relation queries the response was YES. [2024-06-14 11:58:34,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 1940 events. 1080/1940 cut-off events. For 547337/547337 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11335 event pairs, 131 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 18181. Up to 1382 conditions per place. [2024-06-14 11:58:34,770 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 292 selfloop transitions, 115 changer transitions 0/409 dead transitions. [2024-06-14 11:58:34,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 409 transitions, 5479 flow [2024-06-14 11:58:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:58:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:58:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-14 11:58:34,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-14 11:58:34,771 INFO L175 Difference]: Start difference. First operand has 437 places, 382 transitions, 4472 flow. Second operand 13 states and 164 transitions. [2024-06-14 11:58:34,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 409 transitions, 5479 flow [2024-06-14 11:58:36,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 409 transitions, 5176 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:36,429 INFO L231 Difference]: Finished difference. Result has 440 places, 386 transitions, 4533 flow [2024-06-14 11:58:36,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4533, PETRI_PLACES=440, PETRI_TRANSITIONS=386} [2024-06-14 11:58:36,430 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-14 11:58:36,430 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 386 transitions, 4533 flow [2024-06-14 11:58:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:36,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:36,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:36,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:58:36,430 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:36,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:36,430 INFO L85 PathProgramCache]: Analyzing trace with hash -85494263, now seen corresponding path program 14 times [2024-06-14 11:58:36,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:36,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870600209] [2024-06-14 11:58:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:36,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:37,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870600209] [2024-06-14 11:58:37,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870600209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:37,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499410256] [2024-06-14 11:58:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:37,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:37,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 386 transitions, 4533 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:37,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:37,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:38,241 INFO L124 PetriNetUnfolderBase]: 1086/1950 cut-off events. [2024-06-14 11:58:38,241 INFO L125 PetriNetUnfolderBase]: For 555075/555075 co-relation queries the response was YES. [2024-06-14 11:58:38,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18494 conditions, 1950 events. 1086/1950 cut-off events. For 555075/555075 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11372 event pairs, 131 based on Foata normal form. 2/1951 useless extension candidates. Maximal degree in co-relation 18292. Up to 1356 conditions per place. [2024-06-14 11:58:38,269 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 289 selfloop transitions, 117 changer transitions 0/408 dead transitions. [2024-06-14 11:58:38,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 408 transitions, 5501 flow [2024-06-14 11:58:38,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 11:58:38,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 11:58:38,270 INFO L175 Difference]: Start difference. First operand has 440 places, 386 transitions, 4533 flow. Second operand 12 states and 155 transitions. [2024-06-14 11:58:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 408 transitions, 5501 flow [2024-06-14 11:58:40,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 408 transitions, 5188 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:40,034 INFO L231 Difference]: Finished difference. Result has 442 places, 388 transitions, 4561 flow [2024-06-14 11:58:40,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4561, PETRI_PLACES=442, PETRI_TRANSITIONS=388} [2024-06-14 11:58:40,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-14 11:58:40,035 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 388 transitions, 4561 flow [2024-06-14 11:58:40,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:40,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:40,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:40,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:58:40,035 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 116079083, now seen corresponding path program 12 times [2024-06-14 11:58:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:40,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54641245] [2024-06-14 11:58:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54641245] [2024-06-14 11:58:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54641245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297264147] [2024-06-14 11:58:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:41,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:41,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 388 transitions, 4561 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:41,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:41,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:41,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:42,012 INFO L124 PetriNetUnfolderBase]: 1090/1958 cut-off events. [2024-06-14 11:58:42,012 INFO L125 PetriNetUnfolderBase]: For 561671/561671 co-relation queries the response was YES. [2024-06-14 11:58:42,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18494 conditions, 1958 events. 1090/1958 cut-off events. For 561671/561671 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11458 event pairs, 135 based on Foata normal form. 2/1959 useless extension candidates. Maximal degree in co-relation 18291. Up to 1589 conditions per place. [2024-06-14 11:58:42,041 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 330 selfloop transitions, 77 changer transitions 0/409 dead transitions. [2024-06-14 11:58:42,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 409 transitions, 5465 flow [2024-06-14 11:58:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:58:42,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:58:42,042 INFO L175 Difference]: Start difference. First operand has 442 places, 388 transitions, 4561 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:58:42,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 409 transitions, 5465 flow [2024-06-14 11:58:44,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 409 transitions, 5144 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:44,028 INFO L231 Difference]: Finished difference. Result has 443 places, 389 transitions, 4428 flow [2024-06-14 11:58:44,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4428, PETRI_PLACES=443, PETRI_TRANSITIONS=389} [2024-06-14 11:58:44,028 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 411 predicate places. [2024-06-14 11:58:44,028 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 389 transitions, 4428 flow [2024-06-14 11:58:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:44,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:44,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:44,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:58:44,029 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash 115802377, now seen corresponding path program 15 times [2024-06-14 11:58:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868068611] [2024-06-14 11:58:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:45,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868068611] [2024-06-14 11:58:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868068611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:45,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546884499] [2024-06-14 11:58:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:45,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:45,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 389 transitions, 4428 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:45,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:45,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:45,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:46,815 INFO L124 PetriNetUnfolderBase]: 1102/1978 cut-off events. [2024-06-14 11:58:46,815 INFO L125 PetriNetUnfolderBase]: For 569698/569698 co-relation queries the response was YES. [2024-06-14 11:58:46,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18537 conditions, 1978 events. 1102/1978 cut-off events. For 569698/569698 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11548 event pairs, 137 based on Foata normal form. 2/1979 useless extension candidates. Maximal degree in co-relation 18333. Up to 1418 conditions per place. [2024-06-14 11:58:46,843 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 308 selfloop transitions, 107 changer transitions 0/417 dead transitions. [2024-06-14 11:58:46,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 417 transitions, 5713 flow [2024-06-14 11:58:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:58:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:58:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-14 11:58:46,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-14 11:58:46,844 INFO L175 Difference]: Start difference. First operand has 443 places, 389 transitions, 4428 flow. Second operand 13 states and 167 transitions. [2024-06-14 11:58:46,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 417 transitions, 5713 flow [2024-06-14 11:58:48,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 417 transitions, 5535 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:48,759 INFO L231 Difference]: Finished difference. Result has 447 places, 393 transitions, 4558 flow [2024-06-14 11:58:48,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4558, PETRI_PLACES=447, PETRI_TRANSITIONS=393} [2024-06-14 11:58:48,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2024-06-14 11:58:48,759 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 393 transitions, 4558 flow [2024-06-14 11:58:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:48,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:48,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:48,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:58:48,760 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:48,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash 108652537, now seen corresponding path program 16 times [2024-06-14 11:58:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705624377] [2024-06-14 11:58:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:50,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:50,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705624377] [2024-06-14 11:58:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705624377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:50,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:50,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829305900] [2024-06-14 11:58:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:50,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:50,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:50,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 393 transitions, 4558 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:50,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:50,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:51,285 INFO L124 PetriNetUnfolderBase]: 1114/1998 cut-off events. [2024-06-14 11:58:51,286 INFO L125 PetriNetUnfolderBase]: For 575716/575716 co-relation queries the response was YES. [2024-06-14 11:58:51,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 1998 events. 1114/1998 cut-off events. For 575716/575716 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11705 event pairs, 138 based on Foata normal form. 2/1999 useless extension candidates. Maximal degree in co-relation 18594. Up to 1445 conditions per place. [2024-06-14 11:58:51,315 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 311 selfloop transitions, 106 changer transitions 0/419 dead transitions. [2024-06-14 11:58:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 419 transitions, 5555 flow [2024-06-14 11:58:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 11:58:51,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:58:51,316 INFO L175 Difference]: Start difference. First operand has 447 places, 393 transitions, 4558 flow. Second operand 12 states and 159 transitions. [2024-06-14 11:58:51,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 419 transitions, 5555 flow [2024-06-14 11:58:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 419 transitions, 5276 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:53,225 INFO L231 Difference]: Finished difference. Result has 450 places, 397 transitions, 4597 flow [2024-06-14 11:58:53,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4597, PETRI_PLACES=450, PETRI_TRANSITIONS=397} [2024-06-14 11:58:53,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-14 11:58:53,225 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 397 transitions, 4597 flow [2024-06-14 11:58:53,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:53,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:53,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:53,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:58:53,226 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:53,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:53,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1418470979, now seen corresponding path program 17 times [2024-06-14 11:58:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:53,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451671374] [2024-06-14 11:58:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451671374] [2024-06-14 11:58:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451671374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:54,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:54,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:54,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266818082] [2024-06-14 11:58:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:54,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:54,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:54,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:54,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 397 transitions, 4597 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:54,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:54,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:54,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:55,274 INFO L124 PetriNetUnfolderBase]: 1110/1992 cut-off events. [2024-06-14 11:58:55,274 INFO L125 PetriNetUnfolderBase]: For 566080/566080 co-relation queries the response was YES. [2024-06-14 11:58:55,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18366 conditions, 1992 events. 1110/1992 cut-off events. For 566080/566080 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11656 event pairs, 136 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 18160. Up to 1411 conditions per place. [2024-06-14 11:58:55,304 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 305 selfloop transitions, 115 changer transitions 0/422 dead transitions. [2024-06-14 11:58:55,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 422 transitions, 5811 flow [2024-06-14 11:58:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:58:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:58:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-14 11:58:55,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-14 11:58:55,305 INFO L175 Difference]: Start difference. First operand has 450 places, 397 transitions, 4597 flow. Second operand 13 states and 170 transitions. [2024-06-14 11:58:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 422 transitions, 5811 flow [2024-06-14 11:58:57,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 422 transitions, 5549 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:57,036 INFO L231 Difference]: Finished difference. Result has 454 places, 397 transitions, 4570 flow [2024-06-14 11:58:57,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4570, PETRI_PLACES=454, PETRI_TRANSITIONS=397} [2024-06-14 11:58:57,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2024-06-14 11:58:57,037 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 397 transitions, 4570 flow [2024-06-14 11:58:57,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:57,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:57,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:58:57,037 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:57,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1610493360, now seen corresponding path program 16 times [2024-06-14 11:58:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:57,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854698450] [2024-06-14 11:58:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854698450] [2024-06-14 11:58:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854698450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:58:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426947585] [2024-06-14 11:58:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:58:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:58:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:58:58,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:58:58,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 397 transitions, 4570 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:58,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:58,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:58:58,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:58,802 INFO L124 PetriNetUnfolderBase]: 1114/2000 cut-off events. [2024-06-14 11:58:58,803 INFO L125 PetriNetUnfolderBase]: For 573694/573694 co-relation queries the response was YES. [2024-06-14 11:58:58,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18464 conditions, 2000 events. 1114/2000 cut-off events. For 573694/573694 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11767 event pairs, 169 based on Foata normal form. 2/2001 useless extension candidates. Maximal degree in co-relation 18257. Up to 1764 conditions per place. [2024-06-14 11:58:58,833 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 339 selfloop transitions, 76 changer transitions 0/417 dead transitions. [2024-06-14 11:58:58,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 417 transitions, 5506 flow [2024-06-14 11:58:58,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:58:58,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:58:58,834 INFO L175 Difference]: Start difference. First operand has 454 places, 397 transitions, 4570 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:58:58,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 417 transitions, 5506 flow [2024-06-14 11:59:00,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 417 transitions, 5051 flow, removed 47 selfloop flow, removed 14 redundant places. [2024-06-14 11:59:00,613 INFO L231 Difference]: Finished difference. Result has 452 places, 398 transitions, 4311 flow [2024-06-14 11:59:00,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4115, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4311, PETRI_PLACES=452, PETRI_TRANSITIONS=398} [2024-06-14 11:59:00,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-14 11:59:00,614 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 398 transitions, 4311 flow [2024-06-14 11:59:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:59:00,615 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:00,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1423470571, now seen corresponding path program 13 times [2024-06-14 11:59:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960947453] [2024-06-14 11:59:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:00,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960947453] [2024-06-14 11:59:01,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960947453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:01,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112886296] [2024-06-14 11:59:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:01,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 398 transitions, 4311 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:01,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:01,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:01,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:02,739 INFO L124 PetriNetUnfolderBase]: 1118/2008 cut-off events. [2024-06-14 11:59:02,740 INFO L125 PetriNetUnfolderBase]: For 579294/579294 co-relation queries the response was YES. [2024-06-14 11:59:02,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18096 conditions, 2008 events. 1118/2008 cut-off events. For 579294/579294 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11800 event pairs, 119 based on Foata normal form. 2/2009 useless extension candidates. Maximal degree in co-relation 17889. Up to 1640 conditions per place. [2024-06-14 11:59:02,772 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 328 selfloop transitions, 88 changer transitions 0/418 dead transitions. [2024-06-14 11:59:02,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 418 transitions, 5235 flow [2024-06-14 11:59:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:59:02,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 11:59:02,773 INFO L175 Difference]: Start difference. First operand has 452 places, 398 transitions, 4311 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:59:02,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 418 transitions, 5235 flow [2024-06-14 11:59:04,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 418 transitions, 4992 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-14 11:59:04,605 INFO L231 Difference]: Finished difference. Result has 450 places, 399 transitions, 4282 flow [2024-06-14 11:59:04,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4282, PETRI_PLACES=450, PETRI_TRANSITIONS=399} [2024-06-14 11:59:04,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-14 11:59:04,606 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 399 transitions, 4282 flow [2024-06-14 11:59:04,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:04,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:04,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:04,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:59:04,606 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:04,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash 108444992, now seen corresponding path program 17 times [2024-06-14 11:59:04,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:04,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529621487] [2024-06-14 11:59:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529621487] [2024-06-14 11:59:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529621487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:05,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:05,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:05,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096722783] [2024-06-14 11:59:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:05,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:05,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 399 transitions, 4282 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:05,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:05,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:05,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:06,316 INFO L124 PetriNetUnfolderBase]: 1115/2003 cut-off events. [2024-06-14 11:59:06,316 INFO L125 PetriNetUnfolderBase]: For 556996/556996 co-relation queries the response was YES. [2024-06-14 11:59:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17747 conditions, 2003 events. 1115/2003 cut-off events. For 556996/556996 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11780 event pairs, 175 based on Foata normal form. 2/2004 useless extension candidates. Maximal degree in co-relation 17539. Up to 1767 conditions per place. [2024-06-14 11:59:06,346 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 70 changer transitions 0/418 dead transitions. [2024-06-14 11:59:06,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 418 transitions, 5190 flow [2024-06-14 11:59:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:59:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:59:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 11:59:06,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:59:06,347 INFO L175 Difference]: Start difference. First operand has 450 places, 399 transitions, 4282 flow. Second operand 12 states and 144 transitions. [2024-06-14 11:59:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 418 transitions, 5190 flow [2024-06-14 11:59:08,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 418 transitions, 4954 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:08,123 INFO L231 Difference]: Finished difference. Result has 451 places, 399 transitions, 4198 flow [2024-06-14 11:59:08,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4198, PETRI_PLACES=451, PETRI_TRANSITIONS=399} [2024-06-14 11:59:08,124 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-14 11:59:08,124 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 399 transitions, 4198 flow [2024-06-14 11:59:08,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:08,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:08,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:08,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:59:08,125 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:08,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash 108450727, now seen corresponding path program 18 times [2024-06-14 11:59:08,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558264949] [2024-06-14 11:59:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:09,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558264949] [2024-06-14 11:59:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558264949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250968988] [2024-06-14 11:59:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:09,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:09,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 399 transitions, 4198 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:09,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:09,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:10,204 INFO L124 PetriNetUnfolderBase]: 1111/1997 cut-off events. [2024-06-14 11:59:10,204 INFO L125 PetriNetUnfolderBase]: For 543763/543763 co-relation queries the response was YES. [2024-06-14 11:59:10,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17284 conditions, 1997 events. 1111/1997 cut-off events. For 543763/543763 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11765 event pairs, 134 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 17076. Up to 1444 conditions per place. [2024-06-14 11:59:10,233 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 312 selfloop transitions, 107 changer transitions 0/421 dead transitions. [2024-06-14 11:59:10,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 421 transitions, 5102 flow [2024-06-14 11:59:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:59:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:59:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 11:59:10,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 11:59:10,234 INFO L175 Difference]: Start difference. First operand has 451 places, 399 transitions, 4198 flow. Second operand 12 states and 158 transitions. [2024-06-14 11:59:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 421 transitions, 5102 flow [2024-06-14 11:59:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 421 transitions, 4853 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:12,100 INFO L231 Difference]: Finished difference. Result has 452 places, 399 transitions, 4168 flow [2024-06-14 11:59:12,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4168, PETRI_PLACES=452, PETRI_TRANSITIONS=399} [2024-06-14 11:59:12,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-14 11:59:12,101 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 399 transitions, 4168 flow [2024-06-14 11:59:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:12,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:12,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:12,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:59:12,101 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:12,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1423479871, now seen corresponding path program 14 times [2024-06-14 11:59:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168688088] [2024-06-14 11:59:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:12,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:13,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168688088] [2024-06-14 11:59:13,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168688088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:13,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:13,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994626348] [2024-06-14 11:59:13,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:13,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:13,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 399 transitions, 4168 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:13,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:13,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:13,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:14,158 INFO L124 PetriNetUnfolderBase]: 1115/2005 cut-off events. [2024-06-14 11:59:14,158 INFO L125 PetriNetUnfolderBase]: For 552110/552110 co-relation queries the response was YES. [2024-06-14 11:59:14,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 2005 events. 1115/2005 cut-off events. For 552110/552110 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11825 event pairs, 117 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 17102. Up to 1623 conditions per place. [2024-06-14 11:59:14,188 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 328 selfloop transitions, 89 changer transitions 0/419 dead transitions. [2024-06-14 11:59:14,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 419 transitions, 5092 flow [2024-06-14 11:59:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:59:14,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:59:14,190 INFO L175 Difference]: Start difference. First operand has 452 places, 399 transitions, 4168 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:59:14,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 419 transitions, 5092 flow [2024-06-14 11:59:16,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 419 transitions, 4871 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:16,019 INFO L231 Difference]: Finished difference. Result has 452 places, 400 transitions, 4163 flow [2024-06-14 11:59:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4163, PETRI_PLACES=452, PETRI_TRANSITIONS=400} [2024-06-14 11:59:16,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-14 11:59:16,020 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 400 transitions, 4163 flow [2024-06-14 11:59:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:16,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:16,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:59:16,020 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:16,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1344254169, now seen corresponding path program 15 times [2024-06-14 11:59:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567851576] [2024-06-14 11:59:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:17,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:17,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567851576] [2024-06-14 11:59:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567851576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:17,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:17,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:17,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644864831] [2024-06-14 11:59:17,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:17,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:17,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:17,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:17,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:17,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:17,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 400 transitions, 4163 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:17,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:17,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:17,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:17,886 INFO L124 PetriNetUnfolderBase]: 1119/2013 cut-off events. [2024-06-14 11:59:17,886 INFO L125 PetriNetUnfolderBase]: For 559831/559831 co-relation queries the response was YES. [2024-06-14 11:59:17,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17406 conditions, 2013 events. 1119/2013 cut-off events. For 559831/559831 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11877 event pairs, 118 based on Foata normal form. 2/2014 useless extension candidates. Maximal degree in co-relation 17196. Up to 1538 conditions per place. [2024-06-14 11:59:17,917 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 321 selfloop transitions, 97 changer transitions 0/420 dead transitions. [2024-06-14 11:59:17,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 420 transitions, 5089 flow [2024-06-14 11:59:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:59:17,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 11:59:17,918 INFO L175 Difference]: Start difference. First operand has 452 places, 400 transitions, 4163 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:59:17,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 420 transitions, 5089 flow [2024-06-14 11:59:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 420 transitions, 4883 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:19,585 INFO L231 Difference]: Finished difference. Result has 454 places, 401 transitions, 4191 flow [2024-06-14 11:59:19,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4191, PETRI_PLACES=454, PETRI_TRANSITIONS=401} [2024-06-14 11:59:19,585 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2024-06-14 11:59:19,585 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 401 transitions, 4191 flow [2024-06-14 11:59:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:19,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:19,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:59:19,586 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:19,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1081140971, now seen corresponding path program 16 times [2024-06-14 11:59:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:19,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830741744] [2024-06-14 11:59:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:20,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:20,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830741744] [2024-06-14 11:59:20,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830741744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:20,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:20,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:20,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603686040] [2024-06-14 11:59:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:20,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:20,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:20,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 401 transitions, 4191 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:20,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:20,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:20,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:21,576 INFO L124 PetriNetUnfolderBase]: 1129/2031 cut-off events. [2024-06-14 11:59:21,576 INFO L125 PetriNetUnfolderBase]: For 567344/567344 co-relation queries the response was YES. [2024-06-14 11:59:21,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17593 conditions, 2031 events. 1129/2031 cut-off events. For 567344/567344 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12006 event pairs, 174 based on Foata normal form. 2/2032 useless extension candidates. Maximal degree in co-relation 17382. Up to 1877 conditions per place. [2024-06-14 11:59:21,606 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 36 changer transitions 0/423 dead transitions. [2024-06-14 11:59:21,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 423 transitions, 5169 flow [2024-06-14 11:59:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:59:21,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:59:21,606 INFO L175 Difference]: Start difference. First operand has 454 places, 401 transitions, 4191 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:59:21,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 423 transitions, 5169 flow [2024-06-14 11:59:23,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 423 transitions, 4941 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:23,594 INFO L231 Difference]: Finished difference. Result has 457 places, 405 transitions, 4121 flow [2024-06-14 11:59:23,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4121, PETRI_PLACES=457, PETRI_TRANSITIONS=405} [2024-06-14 11:59:23,594 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 425 predicate places. [2024-06-14 11:59:23,594 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 405 transitions, 4121 flow [2024-06-14 11:59:23,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:23,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:23,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:23,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:59:23,595 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:23,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 152711053, now seen corresponding path program 17 times [2024-06-14 11:59:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833743194] [2024-06-14 11:59:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833743194] [2024-06-14 11:59:24,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833743194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:24,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:24,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415026044] [2024-06-14 11:59:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:24,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:24,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:24,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:24,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:25,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:25,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 405 transitions, 4121 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:25,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:25,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:25,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:25,733 INFO L124 PetriNetUnfolderBase]: 1139/2049 cut-off events. [2024-06-14 11:59:25,733 INFO L125 PetriNetUnfolderBase]: For 574416/574416 co-relation queries the response was YES. [2024-06-14 11:59:25,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17593 conditions, 2049 events. 1139/2049 cut-off events. For 574416/574416 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 12164 event pairs, 182 based on Foata normal form. 2/2050 useless extension candidates. Maximal degree in co-relation 17380. Up to 1978 conditions per place. [2024-06-14 11:59:25,766 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 399 selfloop transitions, 23 changer transitions 0/424 dead transitions. [2024-06-14 11:59:25,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 424 transitions, 5087 flow [2024-06-14 11:59:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:59:25,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:59:25,767 INFO L175 Difference]: Start difference. First operand has 457 places, 405 transitions, 4121 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:59:25,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 424 transitions, 5087 flow [2024-06-14 11:59:27,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 424 transitions, 4979 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:27,908 INFO L231 Difference]: Finished difference. Result has 461 places, 410 transitions, 4158 flow [2024-06-14 11:59:27,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4158, PETRI_PLACES=461, PETRI_TRANSITIONS=410} [2024-06-14 11:59:27,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-14 11:59:27,908 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 410 transitions, 4158 flow [2024-06-14 11:59:27,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:27,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:27,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:59:27,909 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:27,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1290243093, now seen corresponding path program 18 times [2024-06-14 11:59:27,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:27,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190832345] [2024-06-14 11:59:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:27,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:29,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:29,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190832345] [2024-06-14 11:59:29,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190832345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:29,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:29,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:29,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124408368] [2024-06-14 11:59:29,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:29,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:29,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:29,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:29,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 410 transitions, 4158 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:29,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:29,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:29,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:30,202 INFO L124 PetriNetUnfolderBase]: 1149/2067 cut-off events. [2024-06-14 11:59:30,202 INFO L125 PetriNetUnfolderBase]: For 581354/581354 co-relation queries the response was YES. [2024-06-14 11:59:30,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17715 conditions, 2067 events. 1149/2067 cut-off events. For 581354/581354 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12276 event pairs, 177 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 17500. Up to 1905 conditions per place. [2024-06-14 11:59:30,234 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 45 changer transitions 0/432 dead transitions. [2024-06-14 11:59:30,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 432 transitions, 5161 flow [2024-06-14 11:59:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:59:30,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:59:30,235 INFO L175 Difference]: Start difference. First operand has 461 places, 410 transitions, 4158 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:59:30,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 432 transitions, 5161 flow [2024-06-14 11:59:32,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 432 transitions, 5095 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:32,425 INFO L231 Difference]: Finished difference. Result has 467 places, 417 transitions, 4304 flow [2024-06-14 11:59:32,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4304, PETRI_PLACES=467, PETRI_TRANSITIONS=417} [2024-06-14 11:59:32,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 435 predicate places. [2024-06-14 11:59:32,426 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 417 transitions, 4304 flow [2024-06-14 11:59:32,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:32,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:32,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:59:32,426 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1579433767, now seen corresponding path program 19 times [2024-06-14 11:59:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:32,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774304650] [2024-06-14 11:59:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774304650] [2024-06-14 11:59:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774304650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916421696] [2024-06-14 11:59:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:33,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 417 transitions, 4304 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:34,396 INFO L124 PetriNetUnfolderBase]: 1153/2075 cut-off events. [2024-06-14 11:59:34,397 INFO L125 PetriNetUnfolderBase]: For 588806/588806 co-relation queries the response was YES. [2024-06-14 11:59:34,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 2075 events. 1153/2075 cut-off events. For 588806/588806 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12351 event pairs, 181 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 17674. Up to 2021 conditions per place. [2024-06-14 11:59:34,425 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 414 selfloop transitions, 16 changer transitions 0/432 dead transitions. [2024-06-14 11:59:34,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 432 transitions, 5236 flow [2024-06-14 11:59:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:34,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:59:34,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-14 11:59:34,426 INFO L175 Difference]: Start difference. First operand has 467 places, 417 transitions, 4304 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:59:34,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 432 transitions, 5236 flow [2024-06-14 11:59:36,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 432 transitions, 5139 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:36,633 INFO L231 Difference]: Finished difference. Result has 472 places, 418 transitions, 4287 flow [2024-06-14 11:59:36,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4287, PETRI_PLACES=472, PETRI_TRANSITIONS=418} [2024-06-14 11:59:36,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 440 predicate places. [2024-06-14 11:59:36,634 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 418 transitions, 4287 flow [2024-06-14 11:59:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:36,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:36,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:36,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:59:36,635 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1208535817, now seen corresponding path program 20 times [2024-06-14 11:59:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:36,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007686237] [2024-06-14 11:59:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:37,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007686237] [2024-06-14 11:59:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007686237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063839378] [2024-06-14 11:59:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:37,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:37,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 418 transitions, 4287 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:37,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:37,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:37,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:38,585 INFO L124 PetriNetUnfolderBase]: 1164/2096 cut-off events. [2024-06-14 11:59:38,585 INFO L125 PetriNetUnfolderBase]: For 623341/623341 co-relation queries the response was YES. [2024-06-14 11:59:38,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 2096 events. 1164/2096 cut-off events. For 623341/623341 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12547 event pairs, 185 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 18174. Up to 1986 conditions per place. [2024-06-14 11:59:38,619 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 24 changer transitions 0/435 dead transitions. [2024-06-14 11:59:38,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 435 transitions, 5597 flow [2024-06-14 11:59:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:59:38,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 11:59:38,620 INFO L175 Difference]: Start difference. First operand has 472 places, 418 transitions, 4287 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:59:38,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 435 transitions, 5597 flow [2024-06-14 11:59:40,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 435 transitions, 5527 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:40,807 INFO L231 Difference]: Finished difference. Result has 474 places, 420 transitions, 4359 flow [2024-06-14 11:59:40,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4217, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4359, PETRI_PLACES=474, PETRI_TRANSITIONS=420} [2024-06-14 11:59:40,808 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-14 11:59:40,808 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 420 transitions, 4359 flow [2024-06-14 11:59:40,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:40,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:40,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:40,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:59:40,808 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:40,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1938444701, now seen corresponding path program 21 times [2024-06-14 11:59:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:40,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865300796] [2024-06-14 11:59:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:42,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:42,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865300796] [2024-06-14 11:59:42,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865300796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:42,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:42,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459172843] [2024-06-14 11:59:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:42,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:42,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 420 transitions, 4359 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:42,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:42,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:42,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:42,972 INFO L124 PetriNetUnfolderBase]: 1168/2104 cut-off events. [2024-06-14 11:59:42,972 INFO L125 PetriNetUnfolderBase]: For 631396/631396 co-relation queries the response was YES. [2024-06-14 11:59:43,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18497 conditions, 2104 events. 1168/2104 cut-off events. For 631396/631396 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12567 event pairs, 181 based on Foata normal form. 2/2105 useless extension candidates. Maximal degree in co-relation 18278. Up to 1917 conditions per place. [2024-06-14 11:59:43,007 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 48 changer transitions 0/437 dead transitions. [2024-06-14 11:59:43,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 437 transitions, 5319 flow [2024-06-14 11:59:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:59:43,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:59:43,008 INFO L175 Difference]: Start difference. First operand has 474 places, 420 transitions, 4359 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:59:43,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 437 transitions, 5319 flow [2024-06-14 11:59:45,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 5233 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:45,446 INFO L231 Difference]: Finished difference. Result has 477 places, 421 transitions, 4421 flow [2024-06-14 11:59:45,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4421, PETRI_PLACES=477, PETRI_TRANSITIONS=421} [2024-06-14 11:59:45,447 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-14 11:59:45,447 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 421 transitions, 4421 flow [2024-06-14 11:59:45,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:45,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:45,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:45,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:59:45,447 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:45,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1930819910, now seen corresponding path program 18 times [2024-06-14 11:59:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564271563] [2024-06-14 11:59:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:46,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564271563] [2024-06-14 11:59:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564271563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:46,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:46,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177069884] [2024-06-14 11:59:46,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:46,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:46,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:46,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 421 transitions, 4421 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:46,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:46,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:46,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:47,286 INFO L124 PetriNetUnfolderBase]: 1172/2112 cut-off events. [2024-06-14 11:59:47,286 INFO L125 PetriNetUnfolderBase]: For 638694/638694 co-relation queries the response was YES. [2024-06-14 11:59:47,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18625 conditions, 2112 events. 1172/2112 cut-off events. For 638694/638694 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12651 event pairs, 193 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 18405. Up to 2031 conditions per place. [2024-06-14 11:59:47,458 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 35 changer transitions 0/436 dead transitions. [2024-06-14 11:59:47,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 436 transitions, 5387 flow [2024-06-14 11:59:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:59:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:59:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 11:59:47,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-14 11:59:47,459 INFO L175 Difference]: Start difference. First operand has 477 places, 421 transitions, 4421 flow. Second operand 12 states and 133 transitions. [2024-06-14 11:59:47,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 436 transitions, 5387 flow [2024-06-14 11:59:49,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 436 transitions, 5262 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:49,680 INFO L231 Difference]: Finished difference. Result has 482 places, 424 transitions, 4444 flow [2024-06-14 11:59:49,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=482, PETRI_TRANSITIONS=424} [2024-06-14 11:59:49,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-14 11:59:49,681 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 424 transitions, 4444 flow [2024-06-14 11:59:49,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:49,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:49,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:49,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:59:49,682 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:49,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 146444027, now seen corresponding path program 22 times [2024-06-14 11:59:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632652311] [2024-06-14 11:59:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:49,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632652311] [2024-06-14 11:59:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632652311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:51,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:51,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125251136] [2024-06-14 11:59:51,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:51,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:51,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:51,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:51,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 424 transitions, 4444 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:51,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:51,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:51,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:51,914 INFO L124 PetriNetUnfolderBase]: 1176/2120 cut-off events. [2024-06-14 11:59:51,914 INFO L125 PetriNetUnfolderBase]: For 646605/646605 co-relation queries the response was YES. [2024-06-14 11:59:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18674 conditions, 2120 events. 1176/2120 cut-off events. For 646605/646605 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12731 event pairs, 181 based on Foata normal form. 2/2121 useless extension candidates. Maximal degree in co-relation 18453. Up to 1938 conditions per place. [2024-06-14 11:59:51,947 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 394 selfloop transitions, 45 changer transitions 0/441 dead transitions. [2024-06-14 11:59:51,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 441 transitions, 5410 flow [2024-06-14 11:59:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:59:51,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:59:51,948 INFO L175 Difference]: Start difference. First operand has 482 places, 424 transitions, 4444 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:59:51,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 441 transitions, 5410 flow [2024-06-14 11:59:54,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 441 transitions, 5254 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 11:59:54,379 INFO L231 Difference]: Finished difference. Result has 483 places, 425 transitions, 4430 flow [2024-06-14 11:59:54,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4430, PETRI_PLACES=483, PETRI_TRANSITIONS=425} [2024-06-14 11:59:54,379 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-14 11:59:54,379 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 425 transitions, 4430 flow [2024-06-14 11:59:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:54,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:54,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:54,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:59:54,380 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:54,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1865373079, now seen corresponding path program 23 times [2024-06-14 11:59:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405365211] [2024-06-14 11:59:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:54,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405365211] [2024-06-14 11:59:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405365211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:55,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:55,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:59:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624413713] [2024-06-14 11:59:55,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:59:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:59:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:59:55,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 11:59:55,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 425 transitions, 4430 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:55,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:55,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 11:59:55,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:56,513 INFO L124 PetriNetUnfolderBase]: 1186/2138 cut-off events. [2024-06-14 11:59:56,513 INFO L125 PetriNetUnfolderBase]: For 654484/654484 co-relation queries the response was YES. [2024-06-14 11:59:56,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18807 conditions, 2138 events. 1186/2138 cut-off events. For 654484/654484 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12868 event pairs, 175 based on Foata normal form. 2/2139 useless extension candidates. Maximal degree in co-relation 18586. Up to 1947 conditions per place. [2024-06-14 11:59:56,546 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 388 selfloop transitions, 53 changer transitions 0/443 dead transitions. [2024-06-14 11:59:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 443 transitions, 5428 flow [2024-06-14 11:59:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:59:56,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 11:59:56,547 INFO L175 Difference]: Start difference. First operand has 483 places, 425 transitions, 4430 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:59:56,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 443 transitions, 5428 flow [2024-06-14 11:59:58,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 443 transitions, 5292 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:58,836 INFO L231 Difference]: Finished difference. Result has 485 places, 428 transitions, 4482 flow [2024-06-14 11:59:58,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4482, PETRI_PLACES=485, PETRI_TRANSITIONS=428} [2024-06-14 11:59:58,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 453 predicate places. [2024-06-14 11:59:58,837 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 428 transitions, 4482 flow [2024-06-14 11:59:58,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:58,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:58,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:59:58,837 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 138810091, now seen corresponding path program 19 times [2024-06-14 11:59:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936891385] [2024-06-14 11:59:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:00,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936891385] [2024-06-14 12:00:00,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936891385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:00,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:00,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:00,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184368339] [2024-06-14 12:00:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:00,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:00,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:00,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:00,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 428 transitions, 4482 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:00,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:00,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:00,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:01,082 INFO L124 PetriNetUnfolderBase]: 1198/2158 cut-off events. [2024-06-14 12:00:01,082 INFO L125 PetriNetUnfolderBase]: For 663567/663567 co-relation queries the response was YES. [2024-06-14 12:00:01,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 2158 events. 1198/2158 cut-off events. For 663567/663567 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13020 event pairs, 177 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 18818. Up to 1893 conditions per place. [2024-06-14 12:00:01,116 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 388 selfloop transitions, 62 changer transitions 0/452 dead transitions. [2024-06-14 12:00:01,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 452 transitions, 5569 flow [2024-06-14 12:00:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:00:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:00:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-14 12:00:01,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528138528138528 [2024-06-14 12:00:01,117 INFO L175 Difference]: Start difference. First operand has 485 places, 428 transitions, 4482 flow. Second operand 14 states and 163 transitions. [2024-06-14 12:00:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 452 transitions, 5569 flow [2024-06-14 12:00:03,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 452 transitions, 5406 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:03,417 INFO L231 Difference]: Finished difference. Result has 491 places, 432 transitions, 4581 flow [2024-06-14 12:00:03,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4581, PETRI_PLACES=491, PETRI_TRANSITIONS=432} [2024-06-14 12:00:03,417 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 459 predicate places. [2024-06-14 12:00:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 432 transitions, 4581 flow [2024-06-14 12:00:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:00:03,417 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:03,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1658446653, now seen corresponding path program 20 times [2024-06-14 12:00:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345001780] [2024-06-14 12:00:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345001780] [2024-06-14 12:00:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345001780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499735502] [2024-06-14 12:00:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:04,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 432 transitions, 4581 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:04,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:05,706 INFO L124 PetriNetUnfolderBase]: 1207/2173 cut-off events. [2024-06-14 12:00:05,706 INFO L125 PetriNetUnfolderBase]: For 672022/672022 co-relation queries the response was YES. [2024-06-14 12:00:05,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19261 conditions, 2173 events. 1207/2173 cut-off events. For 672022/672022 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13142 event pairs, 167 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 19038. Up to 1912 conditions per place. [2024-06-14 12:00:05,743 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 378 selfloop transitions, 76 changer transitions 0/456 dead transitions. [2024-06-14 12:00:05,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 456 transitions, 5679 flow [2024-06-14 12:00:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:00:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:00:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-14 12:00:05,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-14 12:00:05,744 INFO L175 Difference]: Start difference. First operand has 491 places, 432 transitions, 4581 flow. Second operand 13 states and 151 transitions. [2024-06-14 12:00:05,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 456 transitions, 5679 flow [2024-06-14 12:00:08,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 456 transitions, 5460 flow, removed 50 selfloop flow, removed 11 redundant places. [2024-06-14 12:00:08,349 INFO L231 Difference]: Finished difference. Result has 495 places, 437 transitions, 4674 flow [2024-06-14 12:00:08,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4362, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4674, PETRI_PLACES=495, PETRI_TRANSITIONS=437} [2024-06-14 12:00:08,349 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-14 12:00:08,349 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 437 transitions, 4674 flow [2024-06-14 12:00:08,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:08,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:08,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:08,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:00:08,350 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:08,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 404731997, now seen corresponding path program 24 times [2024-06-14 12:00:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084694373] [2024-06-14 12:00:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:09,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:09,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084694373] [2024-06-14 12:00:09,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084694373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:09,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882870482] [2024-06-14 12:00:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:09,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:09,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:09,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 437 transitions, 4674 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:09,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:09,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:09,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:10,414 INFO L124 PetriNetUnfolderBase]: 1211/2181 cut-off events. [2024-06-14 12:00:10,414 INFO L125 PetriNetUnfolderBase]: For 679287/679287 co-relation queries the response was YES. [2024-06-14 12:00:10,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19394 conditions, 2181 events. 1211/2181 cut-off events. For 679287/679287 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13184 event pairs, 185 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 19168. Up to 2001 conditions per place. [2024-06-14 12:00:10,456 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 48 changer transitions 0/453 dead transitions. [2024-06-14 12:00:10,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 453 transitions, 5664 flow [2024-06-14 12:00:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:00:10,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 12:00:10,457 INFO L175 Difference]: Start difference. First operand has 495 places, 437 transitions, 4674 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:00:10,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 453 transitions, 5664 flow [2024-06-14 12:00:13,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 453 transitions, 5417 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:13,251 INFO L231 Difference]: Finished difference. Result has 497 places, 438 transitions, 4579 flow [2024-06-14 12:00:13,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4579, PETRI_PLACES=497, PETRI_TRANSITIONS=438} [2024-06-14 12:00:13,251 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 12:00:13,251 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 438 transitions, 4579 flow [2024-06-14 12:00:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:13,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:13,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:00:13,252 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:13,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash -30941431, now seen corresponding path program 25 times [2024-06-14 12:00:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:13,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753410575] [2024-06-14 12:00:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753410575] [2024-06-14 12:00:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753410575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:14,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:14,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:14,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319900913] [2024-06-14 12:00:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:14,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:14,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:14,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:14,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 438 transitions, 4579 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:14,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:14,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:14,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:15,613 INFO L124 PetriNetUnfolderBase]: 1215/2189 cut-off events. [2024-06-14 12:00:15,613 INFO L125 PetriNetUnfolderBase]: For 686412/686412 co-relation queries the response was YES. [2024-06-14 12:00:15,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19341 conditions, 2189 events. 1215/2189 cut-off events. For 686412/686412 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13256 event pairs, 179 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 19114. Up to 2023 conditions per place. [2024-06-14 12:00:15,652 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 400 selfloop transitions, 53 changer transitions 0/455 dead transitions. [2024-06-14 12:00:15,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 455 transitions, 5592 flow [2024-06-14 12:00:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:00:15,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 12:00:15,653 INFO L175 Difference]: Start difference. First operand has 497 places, 438 transitions, 4579 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:00:15,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 455 transitions, 5592 flow [2024-06-14 12:00:18,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 455 transitions, 5448 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:18,251 INFO L231 Difference]: Finished difference. Result has 500 places, 440 transitions, 4619 flow [2024-06-14 12:00:18,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4619, PETRI_PLACES=500, PETRI_TRANSITIONS=440} [2024-06-14 12:00:18,252 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-14 12:00:18,252 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 440 transitions, 4619 flow [2024-06-14 12:00:18,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:18,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:18,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:18,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:00:18,252 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:18,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1411806997, now seen corresponding path program 26 times [2024-06-14 12:00:18,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:18,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247803767] [2024-06-14 12:00:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247803767] [2024-06-14 12:00:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247803767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163483647] [2024-06-14 12:00:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:19,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:19,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:19,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 440 transitions, 4619 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:19,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:19,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:19,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:20,501 INFO L124 PetriNetUnfolderBase]: 1226/2210 cut-off events. [2024-06-14 12:00:20,501 INFO L125 PetriNetUnfolderBase]: For 724817/724817 co-relation queries the response was YES. [2024-06-14 12:00:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19971 conditions, 2210 events. 1226/2210 cut-off events. For 724817/724817 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13427 event pairs, 192 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 19742. Up to 1951 conditions per place. [2024-06-14 12:00:20,539 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 400 selfloop transitions, 56 changer transitions 0/458 dead transitions. [2024-06-14 12:00:20,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 458 transitions, 6017 flow [2024-06-14 12:00:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:00:20,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 12:00:20,540 INFO L175 Difference]: Start difference. First operand has 500 places, 440 transitions, 4619 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:00:20,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 458 transitions, 6017 flow [2024-06-14 12:00:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 458 transitions, 5865 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:23,362 INFO L231 Difference]: Finished difference. Result has 503 places, 442 transitions, 4693 flow [2024-06-14 12:00:23,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4693, PETRI_PLACES=503, PETRI_TRANSITIONS=442} [2024-06-14 12:00:23,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-14 12:00:23,363 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 442 transitions, 4693 flow [2024-06-14 12:00:23,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:23,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:23,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:00:23,364 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:23,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -839148444, now seen corresponding path program 19 times [2024-06-14 12:00:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794826180] [2024-06-14 12:00:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794826180] [2024-06-14 12:00:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794826180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698658994] [2024-06-14 12:00:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:24,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:24,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:24,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 442 transitions, 4693 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:24,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:24,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:24,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:25,354 INFO L124 PetriNetUnfolderBase]: 1250/2262 cut-off events. [2024-06-14 12:00:25,355 INFO L125 PetriNetUnfolderBase]: For 904891/904891 co-relation queries the response was YES. [2024-06-14 12:00:25,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2262 events. 1250/2262 cut-off events. For 904891/904891 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13817 event pairs, 177 based on Foata normal form. 14/2275 useless extension candidates. Maximal degree in co-relation 20138. Up to 1949 conditions per place. [2024-06-14 12:00:25,393 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 393 selfloop transitions, 59 changer transitions 13/467 dead transitions. [2024-06-14 12:00:25,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 467 transitions, 5857 flow [2024-06-14 12:00:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:00:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:00:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:00:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:00:25,394 INFO L175 Difference]: Start difference. First operand has 503 places, 442 transitions, 4693 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:00:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 467 transitions, 5857 flow [2024-06-14 12:00:28,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 467 transitions, 5739 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 12:00:28,549 INFO L231 Difference]: Finished difference. Result has 508 places, 438 transitions, 4692 flow [2024-06-14 12:00:28,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4692, PETRI_PLACES=508, PETRI_TRANSITIONS=438} [2024-06-14 12:00:28,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-14 12:00:28,549 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 438 transitions, 4692 flow [2024-06-14 12:00:28,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:28,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:28,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:28,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:00:28,549 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:28,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1208209387, now seen corresponding path program 27 times [2024-06-14 12:00:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092147457] [2024-06-14 12:00:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092147457] [2024-06-14 12:00:29,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092147457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:29,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:29,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189701284] [2024-06-14 12:00:29,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:29,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:29,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:29,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:29,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:29,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 438 transitions, 4692 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:29,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:29,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:29,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:30,627 INFO L124 PetriNetUnfolderBase]: 1218/2206 cut-off events. [2024-06-14 12:00:30,627 INFO L125 PetriNetUnfolderBase]: For 740429/740429 co-relation queries the response was YES. [2024-06-14 12:00:30,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20057 conditions, 2206 events. 1218/2206 cut-off events. For 740429/740429 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13462 event pairs, 198 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 19825. Up to 2143 conditions per place. [2024-06-14 12:00:30,664 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 425 selfloop transitions, 26 changer transitions 0/453 dead transitions. [2024-06-14 12:00:30,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 453 transitions, 5670 flow [2024-06-14 12:00:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:00:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:00:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 12:00:30,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-14 12:00:30,665 INFO L175 Difference]: Start difference. First operand has 508 places, 438 transitions, 4692 flow. Second operand 12 states and 127 transitions. [2024-06-14 12:00:30,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 453 transitions, 5670 flow [2024-06-14 12:00:33,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 453 transitions, 5514 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 12:00:33,949 INFO L231 Difference]: Finished difference. Result has 510 places, 439 transitions, 4635 flow [2024-06-14 12:00:33,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4635, PETRI_PLACES=510, PETRI_TRANSITIONS=439} [2024-06-14 12:00:33,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-14 12:00:33,950 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 439 transitions, 4635 flow [2024-06-14 12:00:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:33,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:33,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:00:33,951 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:33,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1865382379, now seen corresponding path program 28 times [2024-06-14 12:00:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308905404] [2024-06-14 12:00:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:35,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:35,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308905404] [2024-06-14 12:00:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308905404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124731473] [2024-06-14 12:00:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:35,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:35,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:35,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:35,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 439 transitions, 4635 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:35,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:35,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:36,361 INFO L124 PetriNetUnfolderBase]: 1222/2214 cut-off events. [2024-06-14 12:00:36,361 INFO L125 PetriNetUnfolderBase]: For 749548/749548 co-relation queries the response was YES. [2024-06-14 12:00:36,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20065 conditions, 2214 events. 1222/2214 cut-off events. For 749548/749548 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13547 event pairs, 186 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 19832. Up to 2019 conditions per place. [2024-06-14 12:00:36,393 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 404 selfloop transitions, 50 changer transitions 0/456 dead transitions. [2024-06-14 12:00:36,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 456 transitions, 5979 flow [2024-06-14 12:00:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:00:36,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-14 12:00:36,395 INFO L175 Difference]: Start difference. First operand has 510 places, 439 transitions, 4635 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:00:36,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 456 transitions, 5979 flow [2024-06-14 12:00:39,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 456 transitions, 5894 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:00:39,536 INFO L231 Difference]: Finished difference. Result has 511 places, 440 transitions, 4704 flow [2024-06-14 12:00:39,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4704, PETRI_PLACES=511, PETRI_TRANSITIONS=440} [2024-06-14 12:00:39,537 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-14 12:00:39,537 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 440 transitions, 4704 flow [2024-06-14 12:00:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:39,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:39,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:00:39,537 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:39,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1857963769, now seen corresponding path program 29 times [2024-06-14 12:00:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:39,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984375545] [2024-06-14 12:00:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984375545] [2024-06-14 12:00:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984375545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:40,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:40,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:40,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312765486] [2024-06-14 12:00:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:40,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:40,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:41,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 440 transitions, 4704 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:41,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:41,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:41,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:41,764 INFO L124 PetriNetUnfolderBase]: 1219/2209 cut-off events. [2024-06-14 12:00:41,764 INFO L125 PetriNetUnfolderBase]: For 727500/727500 co-relation queries the response was YES. [2024-06-14 12:00:41,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 2209 events. 1219/2209 cut-off events. For 727500/727500 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13505 event pairs, 185 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 19479. Up to 2043 conditions per place. [2024-06-14 12:00:41,806 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 408 selfloop transitions, 46 changer transitions 0/456 dead transitions. [2024-06-14 12:00:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 456 transitions, 5656 flow [2024-06-14 12:00:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:00:41,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 12:00:41,808 INFO L175 Difference]: Start difference. First operand has 511 places, 440 transitions, 4704 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:00:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 456 transitions, 5656 flow [2024-06-14 12:00:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 456 transitions, 5458 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:44,855 INFO L231 Difference]: Finished difference. Result has 513 places, 440 transitions, 4602 flow [2024-06-14 12:00:44,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4602, PETRI_PLACES=513, PETRI_TRANSITIONS=440} [2024-06-14 12:00:44,856 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-14 12:00:44,856 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 440 transitions, 4602 flow [2024-06-14 12:00:44,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:44,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:44,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:44,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:00:44,856 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:44,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash -645208879, now seen corresponding path program 21 times [2024-06-14 12:00:44,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:44,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811918738] [2024-06-14 12:00:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:46,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:46,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811918738] [2024-06-14 12:00:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811918738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:46,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255558408] [2024-06-14 12:00:46,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:46,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:46,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:46,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 440 transitions, 4602 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:46,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:46,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:46,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:47,178 INFO L124 PetriNetUnfolderBase]: 1231/2229 cut-off events. [2024-06-14 12:00:47,178 INFO L125 PetriNetUnfolderBase]: For 735610/735610 co-relation queries the response was YES. [2024-06-14 12:00:47,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19822 conditions, 2229 events. 1231/2229 cut-off events. For 735610/735610 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13680 event pairs, 179 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 19587. Up to 1964 conditions per place. [2024-06-14 12:00:47,218 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 400 selfloop transitions, 62 changer transitions 1/465 dead transitions. [2024-06-14 12:00:47,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 465 transitions, 5737 flow [2024-06-14 12:00:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:00:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:00:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 162 transitions. [2024-06-14 12:00:47,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-14 12:00:47,219 INFO L175 Difference]: Start difference. First operand has 513 places, 440 transitions, 4602 flow. Second operand 14 states and 162 transitions. [2024-06-14 12:00:47,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 465 transitions, 5737 flow [2024-06-14 12:00:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 465 transitions, 5624 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:00:50,098 INFO L231 Difference]: Finished difference. Result has 516 places, 444 transitions, 4759 flow [2024-06-14 12:00:50,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4759, PETRI_PLACES=516, PETRI_TRANSITIONS=444} [2024-06-14 12:00:50,098 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 484 predicate places. [2024-06-14 12:00:50,098 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 444 transitions, 4759 flow [2024-06-14 12:00:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:50,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:50,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:00:50,099 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:50,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1888649591, now seen corresponding path program 30 times [2024-06-14 12:00:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501901498] [2024-06-14 12:00:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501901498] [2024-06-14 12:00:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501901498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:51,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966005491] [2024-06-14 12:00:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:51,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:51,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 444 transitions, 4759 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:51,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:51,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:51,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:52,291 INFO L124 PetriNetUnfolderBase]: 1239/2241 cut-off events. [2024-06-14 12:00:52,291 INFO L125 PetriNetUnfolderBase]: For 745076/745076 co-relation queries the response was YES. [2024-06-14 12:00:52,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 2241 events. 1239/2241 cut-off events. For 745076/745076 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13722 event pairs, 189 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 19861. Up to 2141 conditions per place. [2024-06-14 12:00:52,331 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 429 selfloop transitions, 31 changer transitions 0/462 dead transitions. [2024-06-14 12:00:52,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 462 transitions, 5803 flow [2024-06-14 12:00:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 12:00:52,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-14 12:00:52,332 INFO L175 Difference]: Start difference. First operand has 516 places, 444 transitions, 4759 flow. Second operand 11 states and 125 transitions. [2024-06-14 12:00:52,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 462 transitions, 5803 flow [2024-06-14 12:00:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 462 transitions, 5555 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-06-14 12:00:55,726 INFO L231 Difference]: Finished difference. Result has 514 places, 447 transitions, 4663 flow [2024-06-14 12:00:55,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4663, PETRI_PLACES=514, PETRI_TRANSITIONS=447} [2024-06-14 12:00:55,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-14 12:00:55,726 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 447 transitions, 4663 flow [2024-06-14 12:00:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:55,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:55,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:00:55,727 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:55,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -645209034, now seen corresponding path program 20 times [2024-06-14 12:00:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912173208] [2024-06-14 12:00:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:56,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912173208] [2024-06-14 12:00:56,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912173208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:56,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449571561] [2024-06-14 12:00:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:56,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:00:56,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 447 transitions, 4663 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:00:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:57,588 INFO L124 PetriNetUnfolderBase]: 1243/2249 cut-off events. [2024-06-14 12:00:57,588 INFO L125 PetriNetUnfolderBase]: For 752057/752057 co-relation queries the response was YES. [2024-06-14 12:00:57,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19992 conditions, 2249 events. 1243/2249 cut-off events. For 752057/752057 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13805 event pairs, 203 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 19758. Up to 2168 conditions per place. [2024-06-14 12:00:57,625 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 420 selfloop transitions, 38 changer transitions 0/460 dead transitions. [2024-06-14 12:00:57,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 460 transitions, 5649 flow [2024-06-14 12:00:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:00:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:00:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 12:00:57,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:00:57,626 INFO L175 Difference]: Start difference. First operand has 514 places, 447 transitions, 4663 flow. Second operand 12 states and 132 transitions. [2024-06-14 12:00:57,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 460 transitions, 5649 flow [2024-06-14 12:01:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 460 transitions, 5546 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 12:01:00,857 INFO L231 Difference]: Finished difference. Result has 519 places, 448 transitions, 4686 flow [2024-06-14 12:01:00,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4686, PETRI_PLACES=519, PETRI_TRANSITIONS=448} [2024-06-14 12:01:00,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 487 predicate places. [2024-06-14 12:01:00,857 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 448 transitions, 4686 flow [2024-06-14 12:01:00,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:00,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:00,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:00,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:01:00,857 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:00,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1630352321, now seen corresponding path program 31 times [2024-06-14 12:01:00,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:00,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564294017] [2024-06-14 12:01:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:00,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564294017] [2024-06-14 12:01:02,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564294017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:02,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:02,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124600659] [2024-06-14 12:01:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:02,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:02,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 448 transitions, 4686 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:02,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:02,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:02,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:03,235 INFO L124 PetriNetUnfolderBase]: 1247/2257 cut-off events. [2024-06-14 12:01:03,235 INFO L125 PetriNetUnfolderBase]: For 760564/760564 co-relation queries the response was YES. [2024-06-14 12:01:03,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20083 conditions, 2257 events. 1247/2257 cut-off events. For 760564/760564 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13883 event pairs, 195 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 19848. Up to 2143 conditions per place. [2024-06-14 12:01:03,275 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 431 selfloop transitions, 31 changer transitions 0/464 dead transitions. [2024-06-14 12:01:03,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 464 transitions, 5706 flow [2024-06-14 12:01:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:01:03,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-14 12:01:03,276 INFO L175 Difference]: Start difference. First operand has 519 places, 448 transitions, 4686 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:01:03,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 464 transitions, 5706 flow [2024-06-14 12:01:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 464 transitions, 5543 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:06,440 INFO L231 Difference]: Finished difference. Result has 520 places, 449 transitions, 4649 flow [2024-06-14 12:01:06,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4649, PETRI_PLACES=520, PETRI_TRANSITIONS=449} [2024-06-14 12:01:06,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 488 predicate places. [2024-06-14 12:01:06,441 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 449 transitions, 4649 flow [2024-06-14 12:01:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:06,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:06,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:01:06,441 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1658302348, now seen corresponding path program 21 times [2024-06-14 12:01:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686099217] [2024-06-14 12:01:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686099217] [2024-06-14 12:01:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686099217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829894343] [2024-06-14 12:01:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:07,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:07,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 449 transitions, 4649 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:07,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:07,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:07,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:08,627 INFO L124 PetriNetUnfolderBase]: 1271/2309 cut-off events. [2024-06-14 12:01:08,627 INFO L125 PetriNetUnfolderBase]: For 957667/957667 co-relation queries the response was YES. [2024-06-14 12:01:08,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20470 conditions, 2309 events. 1271/2309 cut-off events. For 957667/957667 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14235 event pairs, 181 based on Foata normal form. 14/2322 useless extension candidates. Maximal degree in co-relation 20234. Up to 1942 conditions per place. [2024-06-14 12:01:08,662 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 372 selfloop transitions, 89 changer transitions 12/475 dead transitions. [2024-06-14 12:01:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 475 transitions, 5829 flow [2024-06-14 12:01:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:01:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:01:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-14 12:01:08,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-06-14 12:01:08,663 INFO L175 Difference]: Start difference. First operand has 520 places, 449 transitions, 4649 flow. Second operand 13 states and 159 transitions. [2024-06-14 12:01:08,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 475 transitions, 5829 flow [2024-06-14 12:01:11,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 475 transitions, 5713 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:11,950 INFO L231 Difference]: Finished difference. Result has 524 places, 445 transitions, 4711 flow [2024-06-14 12:01:11,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4711, PETRI_PLACES=524, PETRI_TRANSITIONS=445} [2024-06-14 12:01:11,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-14 12:01:11,951 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 445 transitions, 4711 flow [2024-06-14 12:01:11,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:11,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:11,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:11,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:01:11,951 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:11,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1658302503, now seen corresponding path program 22 times [2024-06-14 12:01:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:11,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549988998] [2024-06-14 12:01:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549988998] [2024-06-14 12:01:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549988998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:13,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:13,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:13,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036688935] [2024-06-14 12:01:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:13,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:13,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 445 transitions, 4711 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:13,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:13,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:13,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:14,240 INFO L124 PetriNetUnfolderBase]: 1253/2269 cut-off events. [2024-06-14 12:01:14,240 INFO L125 PetriNetUnfolderBase]: For 812518/812518 co-relation queries the response was YES. [2024-06-14 12:01:14,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20937 conditions, 2269 events. 1253/2269 cut-off events. For 812518/812518 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13981 event pairs, 179 based on Foata normal form. 2/2270 useless extension candidates. Maximal degree in co-relation 20700. Up to 1941 conditions per place. [2024-06-14 12:01:14,277 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 372 selfloop transitions, 94 changer transitions 0/468 dead transitions. [2024-06-14 12:01:14,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 468 transitions, 6283 flow [2024-06-14 12:01:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:01:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:01:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-14 12:01:14,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-14 12:01:14,278 INFO L175 Difference]: Start difference. First operand has 524 places, 445 transitions, 4711 flow. Second operand 13 states and 151 transitions. [2024-06-14 12:01:14,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 468 transitions, 6283 flow [2024-06-14 12:01:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 468 transitions, 6064 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:17,989 INFO L231 Difference]: Finished difference. Result has 525 places, 449 transitions, 4920 flow [2024-06-14 12:01:17,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4492, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4920, PETRI_PLACES=525, PETRI_TRANSITIONS=449} [2024-06-14 12:01:17,989 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-14 12:01:17,989 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 449 transitions, 4920 flow [2024-06-14 12:01:17,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:17,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:17,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:01:17,990 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:17,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1658298628, now seen corresponding path program 22 times [2024-06-14 12:01:17,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:17,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296587386] [2024-06-14 12:01:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:19,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296587386] [2024-06-14 12:01:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296587386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:19,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559170277] [2024-06-14 12:01:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:19,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:19,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 449 transitions, 4920 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:19,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:19,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:19,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:20,095 INFO L124 PetriNetUnfolderBase]: 1293/2349 cut-off events. [2024-06-14 12:01:20,095 INFO L125 PetriNetUnfolderBase]: For 1016066/1016066 co-relation queries the response was YES. [2024-06-14 12:01:20,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23782 conditions, 2349 events. 1293/2349 cut-off events. For 1016066/1016066 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14489 event pairs, 191 based on Foata normal form. 2/2350 useless extension candidates. Maximal degree in co-relation 23544. Up to 1907 conditions per place. [2024-06-14 12:01:20,137 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 379 selfloop transitions, 93 changer transitions 0/474 dead transitions. [2024-06-14 12:01:20,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 474 transitions, 6460 flow [2024-06-14 12:01:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:01:20,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:01:20,138 INFO L175 Difference]: Start difference. First operand has 525 places, 449 transitions, 4920 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:01:20,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 474 transitions, 6460 flow [2024-06-14 12:01:24,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 474 transitions, 6232 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:24,411 INFO L231 Difference]: Finished difference. Result has 528 places, 450 transitions, 4930 flow [2024-06-14 12:01:24,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4692, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4930, PETRI_PLACES=528, PETRI_TRANSITIONS=450} [2024-06-14 12:01:24,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-14 12:01:24,411 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 450 transitions, 4930 flow [2024-06-14 12:01:24,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:24,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:24,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:01:24,412 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:24,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1624400393, now seen corresponding path program 23 times [2024-06-14 12:01:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359927494] [2024-06-14 12:01:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:25,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359927494] [2024-06-14 12:01:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359927494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:25,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638081625] [2024-06-14 12:01:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:25,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:25,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:25,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:25,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 450 transitions, 4930 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:25,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:25,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:25,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:26,443 INFO L124 PetriNetUnfolderBase]: 1299/2359 cut-off events. [2024-06-14 12:01:26,444 INFO L125 PetriNetUnfolderBase]: For 1026123/1026123 co-relation queries the response was YES. [2024-06-14 12:01:26,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23976 conditions, 2359 events. 1299/2359 cut-off events. For 1026123/1026123 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14603 event pairs, 193 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 23736. Up to 2062 conditions per place. [2024-06-14 12:01:26,487 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 389 selfloop transitions, 77 changer transitions 0/468 dead transitions. [2024-06-14 12:01:26,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 468 transitions, 6008 flow [2024-06-14 12:01:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:01:26,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 12:01:26,488 INFO L175 Difference]: Start difference. First operand has 528 places, 450 transitions, 4930 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:01:26,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 468 transitions, 6008 flow [2024-06-14 12:01:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 468 transitions, 5530 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-14 12:01:31,073 INFO L231 Difference]: Finished difference. Result has 527 places, 452 transitions, 4717 flow [2024-06-14 12:01:31,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4452, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4717, PETRI_PLACES=527, PETRI_TRANSITIONS=452} [2024-06-14 12:01:31,073 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-14 12:01:31,073 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 452 transitions, 4717 flow [2024-06-14 12:01:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:31,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:31,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:31,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:01:31,074 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:31,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash 822887799, now seen corresponding path program 32 times [2024-06-14 12:01:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494588768] [2024-06-14 12:01:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494588768] [2024-06-14 12:01:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494588768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:32,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:32,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105793139] [2024-06-14 12:01:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:32,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:32,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:32,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 452 transitions, 4717 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:32,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:32,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:33,137 INFO L124 PetriNetUnfolderBase]: 1224/2210 cut-off events. [2024-06-14 12:01:33,137 INFO L125 PetriNetUnfolderBase]: For 606996/606996 co-relation queries the response was YES. [2024-06-14 12:01:33,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17451 conditions, 2210 events. 1224/2210 cut-off events. For 606996/606996 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13560 event pairs, 174 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 17214. Up to 2123 conditions per place. [2024-06-14 12:01:33,177 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 438 selfloop transitions, 26 changer transitions 0/466 dead transitions. [2024-06-14 12:01:33,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 466 transitions, 5679 flow [2024-06-14 12:01:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 12:01:33,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:01:33,178 INFO L175 Difference]: Start difference. First operand has 527 places, 452 transitions, 4717 flow. Second operand 11 states and 121 transitions. [2024-06-14 12:01:33,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 466 transitions, 5679 flow [2024-06-14 12:01:36,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 466 transitions, 5398 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:36,016 INFO L231 Difference]: Finished difference. Result has 528 places, 452 transitions, 4493 flow [2024-06-14 12:01:36,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4493, PETRI_PLACES=528, PETRI_TRANSITIONS=452} [2024-06-14 12:01:36,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-14 12:01:36,017 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 452 transitions, 4493 flow [2024-06-14 12:01:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:36,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:36,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:01:36,017 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:36,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash 969692957, now seen corresponding path program 24 times [2024-06-14 12:01:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:36,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143996437] [2024-06-14 12:01:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:37,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143996437] [2024-06-14 12:01:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143996437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048019020] [2024-06-14 12:01:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:37,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:37,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 452 transitions, 4493 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:37,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:37,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:38,186 INFO L124 PetriNetUnfolderBase]: 1220/2204 cut-off events. [2024-06-14 12:01:38,187 INFO L125 PetriNetUnfolderBase]: For 578016/578016 co-relation queries the response was YES. [2024-06-14 12:01:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16687 conditions, 2204 events. 1220/2204 cut-off events. For 578016/578016 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13519 event pairs, 174 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 16449. Up to 2128 conditions per place. [2024-06-14 12:01:38,225 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 438 selfloop transitions, 30 changer transitions 0/470 dead transitions. [2024-06-14 12:01:38,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 470 transitions, 5591 flow [2024-06-14 12:01:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:01:38,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-14 12:01:38,226 INFO L175 Difference]: Start difference. First operand has 528 places, 452 transitions, 4493 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:01:38,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 470 transitions, 5591 flow [2024-06-14 12:01:40,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 470 transitions, 5531 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:40,655 INFO L231 Difference]: Finished difference. Result has 530 places, 454 transitions, 4621 flow [2024-06-14 12:01:40,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4621, PETRI_PLACES=530, PETRI_TRANSITIONS=454} [2024-06-14 12:01:40,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 498 predicate places. [2024-06-14 12:01:40,656 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 454 transitions, 4621 flow [2024-06-14 12:01:40,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:40,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:40,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:40,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:01:40,656 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:40,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash -104048927, now seen corresponding path program 33 times [2024-06-14 12:01:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960760714] [2024-06-14 12:01:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:40,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960760714] [2024-06-14 12:01:41,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960760714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:41,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:41,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:41,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487672942] [2024-06-14 12:01:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:42,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:42,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 454 transitions, 4621 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:42,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:42,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:42,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:42,895 INFO L124 PetriNetUnfolderBase]: 1224/2212 cut-off events. [2024-06-14 12:01:42,895 INFO L125 PetriNetUnfolderBase]: For 585490/585490 co-relation queries the response was YES. [2024-06-14 12:01:42,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16880 conditions, 2212 events. 1224/2212 cut-off events. For 585490/585490 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13605 event pairs, 174 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 16641. Up to 2137 conditions per place. [2024-06-14 12:01:42,932 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 442 selfloop transitions, 26 changer transitions 0/470 dead transitions. [2024-06-14 12:01:42,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 470 transitions, 5657 flow [2024-06-14 12:01:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:01:42,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-14 12:01:42,933 INFO L175 Difference]: Start difference. First operand has 530 places, 454 transitions, 4621 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:01:42,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 470 transitions, 5657 flow [2024-06-14 12:01:45,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 470 transitions, 5487 flow, removed 57 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:45,327 INFO L231 Difference]: Finished difference. Result has 531 places, 455 transitions, 4569 flow [2024-06-14 12:01:45,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4569, PETRI_PLACES=531, PETRI_TRANSITIONS=455} [2024-06-14 12:01:45,328 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-14 12:01:45,328 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 455 transitions, 4569 flow [2024-06-14 12:01:45,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:45,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:45,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:45,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:01:45,328 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:45,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash 253393255, now seen corresponding path program 25 times [2024-06-14 12:01:45,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:45,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108030469] [2024-06-14 12:01:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108030469] [2024-06-14 12:01:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108030469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:46,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621290101] [2024-06-14 12:01:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:46,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:46,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 455 transitions, 4569 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:46,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:46,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:46,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:47,358 INFO L124 PetriNetUnfolderBase]: 1220/2206 cut-off events. [2024-06-14 12:01:47,359 INFO L125 PetriNetUnfolderBase]: For 555194/555194 co-relation queries the response was YES. [2024-06-14 12:01:47,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16290 conditions, 2206 events. 1220/2206 cut-off events. For 555194/555194 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13605 event pairs, 165 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 16050. Up to 2041 conditions per place. [2024-06-14 12:01:47,390 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 417 selfloop transitions, 53 changer transitions 0/472 dead transitions. [2024-06-14 12:01:47,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 472 transitions, 5557 flow [2024-06-14 12:01:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:01:47,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 12:01:47,391 INFO L175 Difference]: Start difference. First operand has 531 places, 455 transitions, 4569 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:01:47,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 472 transitions, 5557 flow [2024-06-14 12:01:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 472 transitions, 5377 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:49,741 INFO L231 Difference]: Finished difference. Result has 534 places, 455 transitions, 4500 flow [2024-06-14 12:01:49,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4500, PETRI_PLACES=534, PETRI_TRANSITIONS=455} [2024-06-14 12:01:49,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-14 12:01:49,741 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 455 transitions, 4500 flow [2024-06-14 12:01:49,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:49,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:49,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:01:49,742 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:49,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash 261027191, now seen corresponding path program 34 times [2024-06-14 12:01:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:49,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748689503] [2024-06-14 12:01:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:50,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:50,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748689503] [2024-06-14 12:01:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748689503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:50,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:50,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381476691] [2024-06-14 12:01:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:50,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:51,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:51,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 455 transitions, 4500 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:51,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:51,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:51,944 INFO L124 PetriNetUnfolderBase]: 1224/2214 cut-off events. [2024-06-14 12:01:51,944 INFO L125 PetriNetUnfolderBase]: For 559274/559274 co-relation queries the response was YES. [2024-06-14 12:01:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 2214 events. 1224/2214 cut-off events. For 559274/559274 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13670 event pairs, 175 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 16070. Up to 2119 conditions per place. [2024-06-14 12:01:51,977 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 442 selfloop transitions, 27 changer transitions 0/471 dead transitions. [2024-06-14 12:01:51,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 471 transitions, 5538 flow [2024-06-14 12:01:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:01:51,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-14 12:01:51,978 INFO L175 Difference]: Start difference. First operand has 534 places, 455 transitions, 4500 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:01:51,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 471 transitions, 5538 flow [2024-06-14 12:01:54,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 471 transitions, 5375 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:54,295 INFO L231 Difference]: Finished difference. Result has 534 places, 456 transitions, 4459 flow [2024-06-14 12:01:54,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4459, PETRI_PLACES=534, PETRI_TRANSITIONS=456} [2024-06-14 12:01:54,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-14 12:01:54,296 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 456 transitions, 4459 flow [2024-06-14 12:01:54,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:54,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:54,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:54,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:01:54,296 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 253393100, now seen corresponding path program 23 times [2024-06-14 12:01:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230543499] [2024-06-14 12:01:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230543499] [2024-06-14 12:01:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230543499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268311750] [2024-06-14 12:01:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:55,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:55,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:55,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:01:55,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 456 transitions, 4459 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:55,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:55,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:01:55,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:56,138 INFO L124 PetriNetUnfolderBase]: 1221/2209 cut-off events. [2024-06-14 12:01:56,138 INFO L125 PetriNetUnfolderBase]: For 529850/529850 co-relation queries the response was YES. [2024-06-14 12:01:56,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15790 conditions, 2209 events. 1221/2209 cut-off events. For 529850/529850 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13618 event pairs, 182 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 15548. Up to 2170 conditions per place. [2024-06-14 12:01:56,181 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 446 selfloop transitions, 20 changer transitions 0/468 dead transitions. [2024-06-14 12:01:56,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 468 transitions, 5417 flow [2024-06-14 12:01:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 12:01:56,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-14 12:01:56,182 INFO L175 Difference]: Start difference. First operand has 534 places, 456 transitions, 4459 flow. Second operand 12 states and 125 transitions. [2024-06-14 12:01:56,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 468 transitions, 5417 flow [2024-06-14 12:01:58,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 468 transitions, 5301 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:58,523 INFO L231 Difference]: Finished difference. Result has 537 places, 456 transitions, 4387 flow [2024-06-14 12:01:58,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4387, PETRI_PLACES=537, PETRI_TRANSITIONS=456} [2024-06-14 12:01:58,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 505 predicate places. [2024-06-14 12:01:58,524 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 456 transitions, 4387 flow [2024-06-14 12:01:58,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:58,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:58,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:58,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:01:58,524 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:58,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:58,525 INFO L85 PathProgramCache]: Analyzing trace with hash 519632291, now seen corresponding path program 35 times [2024-06-14 12:01:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247179374] [2024-06-14 12:01:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247179374] [2024-06-14 12:01:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247179374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:59,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:59,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344012409] [2024-06-14 12:01:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:59,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:00,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:00,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 456 transitions, 4387 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:00,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:00,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:00,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:00,816 INFO L124 PetriNetUnfolderBase]: 1218/2204 cut-off events. [2024-06-14 12:02:00,816 INFO L125 PetriNetUnfolderBase]: For 497949/497949 co-relation queries the response was YES. [2024-06-14 12:02:00,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15225 conditions, 2204 events. 1218/2204 cut-off events. For 497949/497949 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13593 event pairs, 175 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 14982. Up to 2067 conditions per place. [2024-06-14 12:02:00,856 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 437 selfloop transitions, 31 changer transitions 0/470 dead transitions. [2024-06-14 12:02:00,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 470 transitions, 5355 flow [2024-06-14 12:02:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 12:02:00,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-14 12:02:00,857 INFO L175 Difference]: Start difference. First operand has 537 places, 456 transitions, 4387 flow. Second operand 12 states and 130 transitions. [2024-06-14 12:02:00,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 470 transitions, 5355 flow [2024-06-14 12:02:03,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 470 transitions, 4923 flow, removed 20 selfloop flow, removed 21 redundant places. [2024-06-14 12:02:03,173 INFO L231 Difference]: Finished difference. Result has 528 places, 456 transitions, 4021 flow [2024-06-14 12:02:03,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4021, PETRI_PLACES=528, PETRI_TRANSITIONS=456} [2024-06-14 12:02:03,173 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-14 12:02:03,173 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 456 transitions, 4021 flow [2024-06-14 12:02:03,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:03,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:03,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:03,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:02:03,174 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:03,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1707345707, now seen corresponding path program 26 times [2024-06-14 12:02:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395447201] [2024-06-14 12:02:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:04,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395447201] [2024-06-14 12:02:04,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395447201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:04,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438749558] [2024-06-14 12:02:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:04,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:04,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 456 transitions, 4021 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:04,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:04,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:04,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:05,888 INFO L124 PetriNetUnfolderBase]: 1227/2211 cut-off events. [2024-06-14 12:02:05,888 INFO L125 PetriNetUnfolderBase]: For 290527/290530 co-relation queries the response was YES. [2024-06-14 12:02:05,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 2211 events. 1227/2211 cut-off events. For 290527/290530 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13681 event pairs, 143 based on Foata normal form. 4/2214 useless extension candidates. Maximal degree in co-relation 12465. Up to 2099 conditions per place. [2024-06-14 12:02:05,925 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 460 selfloop transitions, 40 changer transitions 0/502 dead transitions. [2024-06-14 12:02:05,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 502 transitions, 5385 flow [2024-06-14 12:02:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-14 12:02:05,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-14 12:02:05,926 INFO L175 Difference]: Start difference. First operand has 528 places, 456 transitions, 4021 flow. Second operand 14 states and 156 transitions. [2024-06-14 12:02:05,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 502 transitions, 5385 flow [2024-06-14 12:02:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 502 transitions, 4992 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-06-14 12:02:07,520 INFO L231 Difference]: Finished difference. Result has 534 places, 479 transitions, 4080 flow [2024-06-14 12:02:07,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4080, PETRI_PLACES=534, PETRI_TRANSITIONS=479} [2024-06-14 12:02:07,521 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-14 12:02:07,521 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 479 transitions, 4080 flow [2024-06-14 12:02:07,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:07,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:07,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:07,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 12:02:07,521 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:07,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash -15701205, now seen corresponding path program 27 times [2024-06-14 12:02:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480579802] [2024-06-14 12:02:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:07,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480579802] [2024-06-14 12:02:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480579802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232487432] [2024-06-14 12:02:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:08,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:08,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:08,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 479 transitions, 4080 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:08,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:08,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:08,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:09,990 INFO L124 PetriNetUnfolderBase]: 1252/2254 cut-off events. [2024-06-14 12:02:09,991 INFO L125 PetriNetUnfolderBase]: For 293134/293134 co-relation queries the response was YES. [2024-06-14 12:02:10,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12526 conditions, 2254 events. 1252/2254 cut-off events. For 293134/293134 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14003 event pairs, 147 based on Foata normal form. 2/2255 useless extension candidates. Maximal degree in co-relation 12279. Up to 2142 conditions per place. [2024-06-14 12:02:10,028 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 475 selfloop transitions, 41 changer transitions 0/518 dead transitions. [2024-06-14 12:02:10,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 518 transitions, 5437 flow [2024-06-14 12:02:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-14 12:02:10,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-14 12:02:10,030 INFO L175 Difference]: Start difference. First operand has 534 places, 479 transitions, 4080 flow. Second operand 14 states and 156 transitions. [2024-06-14 12:02:10,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 518 transitions, 5437 flow [2024-06-14 12:02:12,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 518 transitions, 5221 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-14 12:02:12,036 INFO L231 Difference]: Finished difference. Result has 551 places, 497 transitions, 4293 flow [2024-06-14 12:02:12,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4293, PETRI_PLACES=551, PETRI_TRANSITIONS=497} [2024-06-14 12:02:12,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 519 predicate places. [2024-06-14 12:02:12,037 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 497 transitions, 4293 flow [2024-06-14 12:02:12,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:12,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:12,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:12,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 12:02:12,037 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash -960275039, now seen corresponding path program 28 times [2024-06-14 12:02:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:12,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165110840] [2024-06-14 12:02:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165110840] [2024-06-14 12:02:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165110840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:13,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:13,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:13,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168144562] [2024-06-14 12:02:13,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:13,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:13,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:13,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 497 transitions, 4293 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:13,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:13,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:13,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:14,219 INFO L124 PetriNetUnfolderBase]: 1281/2304 cut-off events. [2024-06-14 12:02:14,220 INFO L125 PetriNetUnfolderBase]: For 297021/297021 co-relation queries the response was YES. [2024-06-14 12:02:14,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12802 conditions, 2304 events. 1281/2304 cut-off events. For 297021/297021 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14380 event pairs, 153 based on Foata normal form. 2/2305 useless extension candidates. Maximal degree in co-relation 12547. Up to 2166 conditions per place. [2024-06-14 12:02:14,252 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 480 selfloop transitions, 56 changer transitions 0/538 dead transitions. [2024-06-14 12:02:14,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 538 transitions, 5718 flow [2024-06-14 12:02:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-14 12:02:14,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-14 12:02:14,253 INFO L175 Difference]: Start difference. First operand has 551 places, 497 transitions, 4293 flow. Second operand 14 states and 160 transitions. [2024-06-14 12:02:14,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 538 transitions, 5718 flow [2024-06-14 12:02:15,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 538 transitions, 5548 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-14 12:02:16,001 INFO L231 Difference]: Finished difference. Result has 565 places, 511 transitions, 4544 flow [2024-06-14 12:02:16,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4125, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4544, PETRI_PLACES=565, PETRI_TRANSITIONS=511} [2024-06-14 12:02:16,002 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2024-06-14 12:02:16,002 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 511 transitions, 4544 flow [2024-06-14 12:02:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:16,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:16,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 12:02:16,002 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:16,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1523926651, now seen corresponding path program 29 times [2024-06-14 12:02:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7114889] [2024-06-14 12:02:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:16,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:17,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7114889] [2024-06-14 12:02:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7114889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:17,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146907109] [2024-06-14 12:02:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:17,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:17,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 511 transitions, 4544 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:17,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:17,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:17,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:18,402 INFO L124 PetriNetUnfolderBase]: 1277/2298 cut-off events. [2024-06-14 12:02:18,403 INFO L125 PetriNetUnfolderBase]: For 261820/261820 co-relation queries the response was YES. [2024-06-14 12:02:18,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12309 conditions, 2298 events. 1277/2298 cut-off events. For 261820/261820 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14355 event pairs, 158 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 12050. Up to 2184 conditions per place. [2024-06-14 12:02:18,443 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 487 selfloop transitions, 48 changer transitions 0/537 dead transitions. [2024-06-14 12:02:18,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 537 transitions, 5715 flow [2024-06-14 12:02:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-14 12:02:18,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-14 12:02:18,444 INFO L175 Difference]: Start difference. First operand has 565 places, 511 transitions, 4544 flow. Second operand 14 states and 156 transitions. [2024-06-14 12:02:18,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 537 transitions, 5715 flow [2024-06-14 12:02:20,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 537 transitions, 5445 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-14 12:02:20,346 INFO L231 Difference]: Finished difference. Result has 576 places, 515 transitions, 4460 flow [2024-06-14 12:02:20,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4460, PETRI_PLACES=576, PETRI_TRANSITIONS=515} [2024-06-14 12:02:20,347 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 544 predicate places. [2024-06-14 12:02:20,347 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 515 transitions, 4460 flow [2024-06-14 12:02:20,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:20,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:20,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 12:02:20,348 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:20,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1638508689, now seen corresponding path program 1 times [2024-06-14 12:02:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972292648] [2024-06-14 12:02:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:21,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972292648] [2024-06-14 12:02:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972292648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:21,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974654118] [2024-06-14 12:02:21,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:21,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:21,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 515 transitions, 4460 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:22,854 INFO L124 PetriNetUnfolderBase]: 1318/2385 cut-off events. [2024-06-14 12:02:22,855 INFO L125 PetriNetUnfolderBase]: For 552556/552556 co-relation queries the response was YES. [2024-06-14 12:02:22,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14699 conditions, 2385 events. 1318/2385 cut-off events. For 552556/552556 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 14887 event pairs, 157 based on Foata normal form. 8/2392 useless extension candidates. Maximal degree in co-relation 14435. Up to 1881 conditions per place. [2024-06-14 12:02:22,897 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 448 selfloop transitions, 86 changer transitions 16/552 dead transitions. [2024-06-14 12:02:22,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 552 transitions, 6212 flow [2024-06-14 12:02:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-06-14 12:02:22,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36796536796536794 [2024-06-14 12:02:22,898 INFO L175 Difference]: Start difference. First operand has 576 places, 515 transitions, 4460 flow. Second operand 14 states and 170 transitions. [2024-06-14 12:02:22,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 552 transitions, 6212 flow [2024-06-14 12:02:25,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 552 transitions, 5899 flow, removed 56 selfloop flow, removed 20 redundant places. [2024-06-14 12:02:25,652 INFO L231 Difference]: Finished difference. Result has 570 places, 511 transitions, 4301 flow [2024-06-14 12:02:25,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4301, PETRI_PLACES=570, PETRI_TRANSITIONS=511} [2024-06-14 12:02:25,652 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 538 predicate places. [2024-06-14 12:02:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 511 transitions, 4301 flow [2024-06-14 12:02:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:25,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:25,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 12:02:25,653 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1696601139, now seen corresponding path program 2 times [2024-06-14 12:02:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067218065] [2024-06-14 12:02:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067218065] [2024-06-14 12:02:26,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067218065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:26,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046665509] [2024-06-14 12:02:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:27,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:27,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 511 transitions, 4301 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:27,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:27,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:27,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:27,925 INFO L124 PetriNetUnfolderBase]: 1339/2430 cut-off events. [2024-06-14 12:02:27,925 INFO L125 PetriNetUnfolderBase]: For 743447/743447 co-relation queries the response was YES. [2024-06-14 12:02:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16900 conditions, 2430 events. 1339/2430 cut-off events. For 743447/743447 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 15184 event pairs, 174 based on Foata normal form. 8/2437 useless extension candidates. Maximal degree in co-relation 16647. Up to 2054 conditions per place. [2024-06-14 12:02:28,075 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 450 selfloop transitions, 86 changer transitions 10/548 dead transitions. [2024-06-14 12:02:28,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 548 transitions, 6045 flow [2024-06-14 12:02:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-14 12:02:28,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2024-06-14 12:02:28,077 INFO L175 Difference]: Start difference. First operand has 570 places, 511 transitions, 4301 flow. Second operand 14 states and 169 transitions. [2024-06-14 12:02:28,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 548 transitions, 6045 flow [2024-06-14 12:02:31,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 548 transitions, 5896 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:31,216 INFO L231 Difference]: Finished difference. Result has 567 places, 510 transitions, 4332 flow [2024-06-14 12:02:31,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4332, PETRI_PLACES=567, PETRI_TRANSITIONS=510} [2024-06-14 12:02:31,216 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-14 12:02:31,216 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 510 transitions, 4332 flow [2024-06-14 12:02:31,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:31,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:31,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:31,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 12:02:31,216 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:31,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1696716459, now seen corresponding path program 3 times [2024-06-14 12:02:31,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:31,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968001418] [2024-06-14 12:02:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:31,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:32,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968001418] [2024-06-14 12:02:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968001418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:32,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:32,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360342053] [2024-06-14 12:02:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:32,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:32,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:32,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:32,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 510 transitions, 4332 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:32,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:32,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:32,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:33,517 INFO L124 PetriNetUnfolderBase]: 1329/2412 cut-off events. [2024-06-14 12:02:33,517 INFO L125 PetriNetUnfolderBase]: For 720806/720806 co-relation queries the response was YES. [2024-06-14 12:02:33,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16859 conditions, 2412 events. 1329/2412 cut-off events. For 720806/720806 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 15048 event pairs, 168 based on Foata normal form. 8/2419 useless extension candidates. Maximal degree in co-relation 16607. Up to 2054 conditions per place. [2024-06-14 12:02:33,551 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 449 selfloop transitions, 86 changer transitions 7/544 dead transitions. [2024-06-14 12:02:33,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 544 transitions, 6053 flow [2024-06-14 12:02:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 166 transitions. [2024-06-14 12:02:33,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-14 12:02:33,551 INFO L175 Difference]: Start difference. First operand has 567 places, 510 transitions, 4332 flow. Second operand 14 states and 166 transitions. [2024-06-14 12:02:33,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 544 transitions, 6053 flow [2024-06-14 12:02:36,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 544 transitions, 5873 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:36,681 INFO L231 Difference]: Finished difference. Result has 567 places, 509 transitions, 4323 flow [2024-06-14 12:02:36,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4323, PETRI_PLACES=567, PETRI_TRANSITIONS=509} [2024-06-14 12:02:36,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-14 12:02:36,681 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 509 transitions, 4323 flow [2024-06-14 12:02:36,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:36,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:36,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 12:02:36,682 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash -763132231, now seen corresponding path program 4 times [2024-06-14 12:02:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:36,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612820856] [2024-06-14 12:02:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:36,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612820856] [2024-06-14 12:02:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612820856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293494334] [2024-06-14 12:02:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:37,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:37,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 509 transitions, 4323 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:37,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:37,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:37,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:38,944 INFO L124 PetriNetUnfolderBase]: 1298/2351 cut-off events. [2024-06-14 12:02:38,944 INFO L125 PetriNetUnfolderBase]: For 578803/578803 co-relation queries the response was YES. [2024-06-14 12:02:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14580 conditions, 2351 events. 1298/2351 cut-off events. For 578803/578803 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 14657 event pairs, 161 based on Foata normal form. 10/2360 useless extension candidates. Maximal degree in co-relation 14329. Up to 2054 conditions per place. [2024-06-14 12:02:38,978 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 435 selfloop transitions, 76 changer transitions 24/537 dead transitions. [2024-06-14 12:02:38,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 537 transitions, 5577 flow [2024-06-14 12:02:38,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-14 12:02:38,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-14 12:02:38,980 INFO L175 Difference]: Start difference. First operand has 567 places, 509 transitions, 4323 flow. Second operand 14 states and 160 transitions. [2024-06-14 12:02:38,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 537 transitions, 5577 flow [2024-06-14 12:02:41,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 537 transitions, 5401 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 12:02:41,380 INFO L231 Difference]: Finished difference. Result has 567 places, 497 transitions, 4146 flow [2024-06-14 12:02:41,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4146, PETRI_PLACES=567, PETRI_TRANSITIONS=497} [2024-06-14 12:02:41,380 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-14 12:02:41,380 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 497 transitions, 4146 flow [2024-06-14 12:02:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:41,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:41,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 12:02:41,381 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:41,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash -780076757, now seen corresponding path program 5 times [2024-06-14 12:02:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235833640] [2024-06-14 12:02:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235833640] [2024-06-14 12:02:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235833640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:42,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:42,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879256259] [2024-06-14 12:02:42,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:42,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:42,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:42,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:42,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 497 transitions, 4146 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:42,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:42,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:42,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:43,609 INFO L124 PetriNetUnfolderBase]: 1301/2371 cut-off events. [2024-06-14 12:02:43,609 INFO L125 PetriNetUnfolderBase]: For 720434/720434 co-relation queries the response was YES. [2024-06-14 12:02:43,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16515 conditions, 2371 events. 1301/2371 cut-off events. For 720434/720434 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14843 event pairs, 179 based on Foata normal form. 8/2378 useless extension candidates. Maximal degree in co-relation 16265. Up to 2074 conditions per place. [2024-06-14 12:02:43,642 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 459 selfloop transitions, 55 changer transitions 11/527 dead transitions. [2024-06-14 12:02:43,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 527 transitions, 5821 flow [2024-06-14 12:02:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:02:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:02:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-14 12:02:43,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-14 12:02:43,643 INFO L175 Difference]: Start difference. First operand has 567 places, 497 transitions, 4146 flow. Second operand 13 states and 149 transitions. [2024-06-14 12:02:43,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 527 transitions, 5821 flow [2024-06-14 12:02:46,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 527 transitions, 5638 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-14 12:02:46,802 INFO L231 Difference]: Finished difference. Result has 556 places, 492 transitions, 4038 flow [2024-06-14 12:02:46,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4038, PETRI_PLACES=556, PETRI_TRANSITIONS=492} [2024-06-14 12:02:46,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-14 12:02:46,802 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 492 transitions, 4038 flow [2024-06-14 12:02:46,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:46,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:46,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:46,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 12:02:46,803 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:46,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:46,803 INFO L85 PathProgramCache]: Analyzing trace with hash 93668573, now seen corresponding path program 6 times [2024-06-14 12:02:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:46,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980394665] [2024-06-14 12:02:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:46,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:48,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:48,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980394665] [2024-06-14 12:02:48,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980394665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:48,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556589147] [2024-06-14 12:02:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:48,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:48,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 492 transitions, 4038 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:48,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:48,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:48,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:49,236 INFO L124 PetriNetUnfolderBase]: 1262/2302 cut-off events. [2024-06-14 12:02:49,236 INFO L125 PetriNetUnfolderBase]: For 566314/566314 co-relation queries the response was YES. [2024-06-14 12:02:49,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14040 conditions, 2302 events. 1262/2302 cut-off events. For 566314/566314 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14421 event pairs, 170 based on Foata normal form. 10/2311 useless extension candidates. Maximal degree in co-relation 13794. Up to 2074 conditions per place. [2024-06-14 12:02:49,270 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 445 selfloop transitions, 36 changer transitions 33/516 dead transitions. [2024-06-14 12:02:49,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 516 transitions, 5236 flow [2024-06-14 12:02:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:02:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:02:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-14 12:02:49,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:02:49,271 INFO L175 Difference]: Start difference. First operand has 556 places, 492 transitions, 4038 flow. Second operand 13 states and 143 transitions. [2024-06-14 12:02:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 516 transitions, 5236 flow [2024-06-14 12:02:52,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 516 transitions, 5122 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:02:52,038 INFO L231 Difference]: Finished difference. Result has 556 places, 469 transitions, 3771 flow [2024-06-14 12:02:52,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3771, PETRI_PLACES=556, PETRI_TRANSITIONS=469} [2024-06-14 12:02:52,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-14 12:02:52,039 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 469 transitions, 3771 flow [2024-06-14 12:02:52,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:52,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 12:02:52,039 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 89199923, now seen corresponding path program 7 times [2024-06-14 12:02:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333776074] [2024-06-14 12:02:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:53,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333776074] [2024-06-14 12:02:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333776074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:53,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:53,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:53,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612062230] [2024-06-14 12:02:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:53,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:53,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:53,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 469 transitions, 3771 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:53,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:53,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:53,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:54,657 INFO L124 PetriNetUnfolderBase]: 1212/2212 cut-off events. [2024-06-14 12:02:54,657 INFO L125 PetriNetUnfolderBase]: For 565991/565991 co-relation queries the response was YES. [2024-06-14 12:02:54,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13529 conditions, 2212 events. 1212/2212 cut-off events. For 565991/565991 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13734 event pairs, 195 based on Foata normal form. 10/2221 useless extension candidates. Maximal degree in co-relation 13284. Up to 2122 conditions per place. [2024-06-14 12:02:54,694 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 461 selfloop transitions, 17 changer transitions 11/491 dead transitions. [2024-06-14 12:02:54,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 491 transitions, 4917 flow [2024-06-14 12:02:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-06-14 12:02:54,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 12:02:54,695 INFO L175 Difference]: Start difference. First operand has 556 places, 469 transitions, 3771 flow. Second operand 14 states and 147 transitions. [2024-06-14 12:02:54,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 491 transitions, 4917 flow [2024-06-14 12:02:56,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 491 transitions, 4775 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-14 12:02:56,895 INFO L231 Difference]: Finished difference. Result has 541 places, 466 transitions, 3648 flow [2024-06-14 12:02:56,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3648, PETRI_PLACES=541, PETRI_TRANSITIONS=466} [2024-06-14 12:02:56,896 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-14 12:02:56,896 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 466 transitions, 3648 flow [2024-06-14 12:02:56,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:56,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:56,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:56,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 12:02:56,896 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:56,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash 446240135, now seen corresponding path program 8 times [2024-06-14 12:02:56,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:56,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40805250] [2024-06-14 12:02:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:56,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40805250] [2024-06-14 12:02:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40805250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:02:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278460988] [2024-06-14 12:02:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:58,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:02:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:02:58,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:02:58,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:02:58,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 466 transitions, 3648 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:58,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:58,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:02:58,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:59,327 INFO L124 PetriNetUnfolderBase]: 1204/2200 cut-off events. [2024-06-14 12:02:59,327 INFO L125 PetriNetUnfolderBase]: For 528037/528037 co-relation queries the response was YES. [2024-06-14 12:02:59,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 2200 events. 1204/2200 cut-off events. For 528037/528037 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13648 event pairs, 193 based on Foata normal form. 8/2207 useless extension candidates. Maximal degree in co-relation 13011. Up to 2120 conditions per place. [2024-06-14 12:02:59,362 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 460 selfloop transitions, 15 changer transitions 11/488 dead transitions. [2024-06-14 12:02:59,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 488 transitions, 4731 flow [2024-06-14 12:02:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:02:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:02:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 144 transitions. [2024-06-14 12:02:59,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3116883116883117 [2024-06-14 12:02:59,363 INFO L175 Difference]: Start difference. First operand has 541 places, 466 transitions, 3648 flow. Second operand 14 states and 144 transitions. [2024-06-14 12:02:59,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 488 transitions, 4731 flow [2024-06-14 12:03:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 488 transitions, 4691 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-14 12:03:01,605 INFO L231 Difference]: Finished difference. Result has 539 places, 464 transitions, 3630 flow [2024-06-14 12:03:01,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3630, PETRI_PLACES=539, PETRI_TRANSITIONS=464} [2024-06-14 12:03:01,605 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-14 12:03:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 464 transitions, 3630 flow [2024-06-14 12:03:01,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:01,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 12:03:01,606 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:01,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 89079953, now seen corresponding path program 9 times [2024-06-14 12:03:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431974761] [2024-06-14 12:03:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431974761] [2024-06-14 12:03:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431974761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806757102] [2024-06-14 12:03:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:03,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:03,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 464 transitions, 3630 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:03,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:03,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:03,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:03,864 INFO L124 PetriNetUnfolderBase]: 1197/2187 cut-off events. [2024-06-14 12:03:03,864 INFO L125 PetriNetUnfolderBase]: For 517355/517355 co-relation queries the response was YES. [2024-06-14 12:03:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13164 conditions, 2187 events. 1197/2187 cut-off events. For 517355/517355 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13514 event pairs, 149 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 12927. Up to 1881 conditions per place. [2024-06-14 12:03:03,898 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 430 selfloop transitions, 45 changer transitions 17/494 dead transitions. [2024-06-14 12:03:03,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 494 transitions, 5228 flow [2024-06-14 12:03:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-14 12:03:03,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-14 12:03:03,899 INFO L175 Difference]: Start difference. First operand has 539 places, 464 transitions, 3630 flow. Second operand 13 states and 151 transitions. [2024-06-14 12:03:03,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 494 transitions, 5228 flow [2024-06-14 12:03:05,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 494 transitions, 5192 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:05,921 INFO L231 Difference]: Finished difference. Result has 536 places, 454 transitions, 3607 flow [2024-06-14 12:03:05,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3607, PETRI_PLACES=536, PETRI_TRANSITIONS=454} [2024-06-14 12:03:05,921 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-14 12:03:05,921 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 454 transitions, 3607 flow [2024-06-14 12:03:05,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:05,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:05,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:05,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 12:03:05,922 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:05,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash -785255373, now seen corresponding path program 10 times [2024-06-14 12:03:05,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:05,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076161117] [2024-06-14 12:03:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:07,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076161117] [2024-06-14 12:03:07,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076161117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:07,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:07,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231344667] [2024-06-14 12:03:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:07,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:07,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 454 transitions, 3607 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:07,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:07,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:07,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:08,361 INFO L124 PetriNetUnfolderBase]: 1211/2222 cut-off events. [2024-06-14 12:03:08,361 INFO L125 PetriNetUnfolderBase]: For 722807/722807 co-relation queries the response was YES. [2024-06-14 12:03:08,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15840 conditions, 2222 events. 1211/2222 cut-off events. For 722807/722807 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13733 event pairs, 127 based on Foata normal form. 8/2229 useless extension candidates. Maximal degree in co-relation 15604. Up to 1138 conditions per place. [2024-06-14 12:03:08,396 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 289 selfloop transitions, 185 changer transitions 10/486 dead transitions. [2024-06-14 12:03:08,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 486 transitions, 5209 flow [2024-06-14 12:03:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-14 12:03:08,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:03:08,397 INFO L175 Difference]: Start difference. First operand has 536 places, 454 transitions, 3607 flow. Second operand 12 states and 164 transitions. [2024-06-14 12:03:08,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 486 transitions, 5209 flow [2024-06-14 12:03:11,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 486 transitions, 5119 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:11,366 INFO L231 Difference]: Finished difference. Result has 529 places, 451 transitions, 3881 flow [2024-06-14 12:03:11,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3881, PETRI_PLACES=529, PETRI_TRANSITIONS=451} [2024-06-14 12:03:11,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-14 12:03:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 451 transitions, 3881 flow [2024-06-14 12:03:11,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:11,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 12:03:11,367 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:11,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -652904357, now seen corresponding path program 11 times [2024-06-14 12:03:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94256666] [2024-06-14 12:03:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94256666] [2024-06-14 12:03:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94256666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282477925] [2024-06-14 12:03:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:12,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:12,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:12,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:12,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 451 transitions, 3881 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:12,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:12,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:13,620 INFO L124 PetriNetUnfolderBase]: 1205/2212 cut-off events. [2024-06-14 12:03:13,620 INFO L125 PetriNetUnfolderBase]: For 743965/743965 co-relation queries the response was YES. [2024-06-14 12:03:13,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 2212 events. 1205/2212 cut-off events. For 743965/743965 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13662 event pairs, 127 based on Foata normal form. 10/2221 useless extension candidates. Maximal degree in co-relation 16005. Up to 1484 conditions per place. [2024-06-14 12:03:13,657 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 308 selfloop transitions, 158 changer transitions 11/479 dead transitions. [2024-06-14 12:03:13,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 479 transitions, 5023 flow [2024-06-14 12:03:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-14 12:03:13,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-14 12:03:13,658 INFO L175 Difference]: Start difference. First operand has 529 places, 451 transitions, 3881 flow. Second operand 13 states and 170 transitions. [2024-06-14 12:03:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 479 transitions, 5023 flow [2024-06-14 12:03:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 479 transitions, 4659 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:16,374 INFO L231 Difference]: Finished difference. Result has 527 places, 448 transitions, 3818 flow [2024-06-14 12:03:16,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3818, PETRI_PLACES=527, PETRI_TRANSITIONS=448} [2024-06-14 12:03:16,375 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-14 12:03:16,375 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 448 transitions, 3818 flow [2024-06-14 12:03:16,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:16,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:16,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:16,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 12:03:16,375 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:16,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash -428095191, now seen corresponding path program 12 times [2024-06-14 12:03:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334326184] [2024-06-14 12:03:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334326184] [2024-06-14 12:03:17,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334326184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:17,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:17,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728769468] [2024-06-14 12:03:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:17,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:17,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:17,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:17,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:18,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:18,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 448 transitions, 3818 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:18,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:18,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:18,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:19,102 INFO L124 PetriNetUnfolderBase]: 1468/2673 cut-off events. [2024-06-14 12:03:19,102 INFO L125 PetriNetUnfolderBase]: For 859150/859150 co-relation queries the response was YES. [2024-06-14 12:03:19,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20297 conditions, 2673 events. 1468/2673 cut-off events. For 859150/859150 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17005 event pairs, 285 based on Foata normal form. 8/2680 useless extension candidates. Maximal degree in co-relation 20065. Up to 1981 conditions per place. [2024-06-14 12:03:19,145 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 449 selfloop transitions, 132 changer transitions 10/593 dead transitions. [2024-06-14 12:03:19,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 593 transitions, 6594 flow [2024-06-14 12:03:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 12:03:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 12:03:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 186 transitions. [2024-06-14 12:03:19,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 12:03:19,146 INFO L175 Difference]: Start difference. First operand has 527 places, 448 transitions, 3818 flow. Second operand 15 states and 186 transitions. [2024-06-14 12:03:19,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 593 transitions, 6594 flow [2024-06-14 12:03:22,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 593 transitions, 6130 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:22,536 INFO L231 Difference]: Finished difference. Result has 536 places, 515 transitions, 4678 flow [2024-06-14 12:03:22,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4678, PETRI_PLACES=536, PETRI_TRANSITIONS=515} [2024-06-14 12:03:22,536 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-14 12:03:22,536 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 515 transitions, 4678 flow [2024-06-14 12:03:22,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:22,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:22,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:22,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 12:03:22,537 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:22,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash -780666753, now seen corresponding path program 13 times [2024-06-14 12:03:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746946244] [2024-06-14 12:03:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746946244] [2024-06-14 12:03:23,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746946244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:23,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:23,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:23,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321109674] [2024-06-14 12:03:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:23,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:23,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:23,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:23,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:23,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 515 transitions, 4678 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:23,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:23,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:23,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:24,788 INFO L124 PetriNetUnfolderBase]: 1449/2640 cut-off events. [2024-06-14 12:03:24,788 INFO L125 PetriNetUnfolderBase]: For 884517/884517 co-relation queries the response was YES. [2024-06-14 12:03:24,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18597 conditions, 2640 events. 1449/2640 cut-off events. For 884517/884517 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16746 event pairs, 131 based on Foata normal form. 20/2659 useless extension candidates. Maximal degree in co-relation 18357. Up to 1630 conditions per place. [2024-06-14 12:03:24,833 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 207 changer transitions 16/542 dead transitions. [2024-06-14 12:03:24,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 542 transitions, 5942 flow [2024-06-14 12:03:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 12:03:24,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-14 12:03:24,834 INFO L175 Difference]: Start difference. First operand has 536 places, 515 transitions, 4678 flow. Second operand 13 states and 166 transitions. [2024-06-14 12:03:24,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 542 transitions, 5942 flow [2024-06-14 12:03:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 542 transitions, 5699 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:03:28,128 INFO L231 Difference]: Finished difference. Result has 541 places, 507 transitions, 4782 flow [2024-06-14 12:03:28,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4435, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4782, PETRI_PLACES=541, PETRI_TRANSITIONS=507} [2024-06-14 12:03:28,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-14 12:03:28,129 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 507 transitions, 4782 flow [2024-06-14 12:03:28,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:28,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:28,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:28,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 12:03:28,129 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:28,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:28,130 INFO L85 PathProgramCache]: Analyzing trace with hash -199756349, now seen corresponding path program 1 times [2024-06-14 12:03:28,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:28,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799696867] [2024-06-14 12:03:28,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:28,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799696867] [2024-06-14 12:03:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799696867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458428751] [2024-06-14 12:03:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:29,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:29,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 507 transitions, 4782 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:29,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:30,267 INFO L124 PetriNetUnfolderBase]: 1414/2563 cut-off events. [2024-06-14 12:03:30,268 INFO L125 PetriNetUnfolderBase]: For 592158/592158 co-relation queries the response was YES. [2024-06-14 12:03:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 2563 events. 1414/2563 cut-off events. For 592158/592158 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16215 event pairs, 141 based on Foata normal form. 2/2564 useless extension candidates. Maximal degree in co-relation 17973. Up to 1693 conditions per place. [2024-06-14 12:03:30,310 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 196 changer transitions 0/534 dead transitions. [2024-06-14 12:03:30,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 534 transitions, 5974 flow [2024-06-14 12:03:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:03:30,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:03:30,311 INFO L175 Difference]: Start difference. First operand has 541 places, 507 transitions, 4782 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:03:30,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 534 transitions, 5974 flow [2024-06-14 12:03:33,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 534 transitions, 5540 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:03:33,313 INFO L231 Difference]: Finished difference. Result has 533 places, 512 transitions, 4813 flow [2024-06-14 12:03:33,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4356, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4813, PETRI_PLACES=533, PETRI_TRANSITIONS=512} [2024-06-14 12:03:33,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 501 predicate places. [2024-06-14 12:03:33,313 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 512 transitions, 4813 flow [2024-06-14 12:03:33,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:33,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:33,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:33,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 12:03:33,314 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:33,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash -193269599, now seen corresponding path program 2 times [2024-06-14 12:03:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:33,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810055817] [2024-06-14 12:03:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:34,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810055817] [2024-06-14 12:03:34,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810055817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:34,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:34,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302780289] [2024-06-14 12:03:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:34,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:34,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:34,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:34,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 512 transitions, 4813 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:34,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:34,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:34,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:35,270 INFO L124 PetriNetUnfolderBase]: 1411/2558 cut-off events. [2024-06-14 12:03:35,270 INFO L125 PetriNetUnfolderBase]: For 552220/552220 co-relation queries the response was YES. [2024-06-14 12:03:35,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17767 conditions, 2558 events. 1411/2558 cut-off events. For 552220/552220 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16187 event pairs, 140 based on Foata normal form. 2/2559 useless extension candidates. Maximal degree in co-relation 17531. Up to 1688 conditions per place. [2024-06-14 12:03:35,311 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 337 selfloop transitions, 195 changer transitions 0/534 dead transitions. [2024-06-14 12:03:35,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 534 transitions, 5949 flow [2024-06-14 12:03:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:03:35,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:03:35,311 INFO L175 Difference]: Start difference. First operand has 533 places, 512 transitions, 4813 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:03:35,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 534 transitions, 5949 flow [2024-06-14 12:03:38,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 534 transitions, 5548 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:38,095 INFO L231 Difference]: Finished difference. Result has 536 places, 513 transitions, 4823 flow [2024-06-14 12:03:38,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4823, PETRI_PLACES=536, PETRI_TRANSITIONS=513} [2024-06-14 12:03:38,096 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-14 12:03:38,096 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 513 transitions, 4823 flow [2024-06-14 12:03:38,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:38,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:38,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 12:03:38,097 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:38,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash -607757929, now seen corresponding path program 3 times [2024-06-14 12:03:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:38,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826397161] [2024-06-14 12:03:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:39,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:39,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826397161] [2024-06-14 12:03:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826397161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:39,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261555071] [2024-06-14 12:03:39,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:39,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:39,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:39,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 513 transitions, 4823 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:39,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:39,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:39,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:40,465 INFO L124 PetriNetUnfolderBase]: 1427/2590 cut-off events. [2024-06-14 12:03:40,465 INFO L125 PetriNetUnfolderBase]: For 559257/559257 co-relation queries the response was YES. [2024-06-14 12:03:40,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17922 conditions, 2590 events. 1427/2590 cut-off events. For 559257/559257 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 16481 event pairs, 277 based on Foata normal form. 2/2591 useless extension candidates. Maximal degree in co-relation 17685. Up to 2011 conditions per place. [2024-06-14 12:03:40,509 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 444 selfloop transitions, 129 changer transitions 0/575 dead transitions. [2024-06-14 12:03:40,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 575 transitions, 6256 flow [2024-06-14 12:03:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-14 12:03:40,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-14 12:03:40,510 INFO L175 Difference]: Start difference. First operand has 536 places, 513 transitions, 4823 flow. Second operand 13 states and 154 transitions. [2024-06-14 12:03:40,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 575 transitions, 6256 flow [2024-06-14 12:03:43,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 575 transitions, 5799 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:43,458 INFO L231 Difference]: Finished difference. Result has 541 places, 520 transitions, 4714 flow [2024-06-14 12:03:43,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4714, PETRI_PLACES=541, PETRI_TRANSITIONS=520} [2024-06-14 12:03:43,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-14 12:03:43,459 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 520 transitions, 4714 flow [2024-06-14 12:03:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:43,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:43,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 12:03:43,459 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:43,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash -614259993, now seen corresponding path program 14 times [2024-06-14 12:03:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:43,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426692000] [2024-06-14 12:03:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426692000] [2024-06-14 12:03:44,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426692000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895819025] [2024-06-14 12:03:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:44,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:44,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:44,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 520 transitions, 4714 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:44,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:44,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:44,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:45,842 INFO L124 PetriNetUnfolderBase]: 1455/2646 cut-off events. [2024-06-14 12:03:45,842 INFO L125 PetriNetUnfolderBase]: For 694532/694532 co-relation queries the response was YES. [2024-06-14 12:03:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18141 conditions, 2646 events. 1455/2646 cut-off events. For 694532/694532 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 16840 event pairs, 138 based on Foata normal form. 10/2655 useless extension candidates. Maximal degree in co-relation 17901. Up to 1720 conditions per place. [2024-06-14 12:03:45,887 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 341 selfloop transitions, 195 changer transitions 14/552 dead transitions. [2024-06-14 12:03:45,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 552 transitions, 6038 flow [2024-06-14 12:03:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 12:03:45,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 12:03:45,888 INFO L175 Difference]: Start difference. First operand has 541 places, 520 transitions, 4714 flow. Second operand 13 states and 165 transitions. [2024-06-14 12:03:45,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 552 transitions, 6038 flow [2024-06-14 12:03:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 552 transitions, 5787 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:03:48,847 INFO L231 Difference]: Finished difference. Result has 548 places, 518 transitions, 4840 flow [2024-06-14 12:03:48,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4840, PETRI_PLACES=548, PETRI_TRANSITIONS=518} [2024-06-14 12:03:48,847 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-14 12:03:48,847 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 518 transitions, 4840 flow [2024-06-14 12:03:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:48,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:48,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 12:03:48,848 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -614437623, now seen corresponding path program 15 times [2024-06-14 12:03:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:48,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691058747] [2024-06-14 12:03:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:48,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691058747] [2024-06-14 12:03:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691058747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:50,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:50,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511104221] [2024-06-14 12:03:50,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:50,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:50,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:50,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 518 transitions, 4840 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:50,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:50,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:50,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:51,141 INFO L124 PetriNetUnfolderBase]: 1460/2669 cut-off events. [2024-06-14 12:03:51,141 INFO L125 PetriNetUnfolderBase]: For 835007/835007 co-relation queries the response was YES. [2024-06-14 12:03:51,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20345 conditions, 2669 events. 1460/2669 cut-off events. For 835007/835007 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17019 event pairs, 147 based on Foata normal form. 8/2676 useless extension candidates. Maximal degree in co-relation 20103. Up to 1602 conditions per place. [2024-06-14 12:03:51,189 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 323 selfloop transitions, 217 changer transitions 8/550 dead transitions. [2024-06-14 12:03:51,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 550 transitions, 6556 flow [2024-06-14 12:03:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-14 12:03:51,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-14 12:03:51,190 INFO L175 Difference]: Start difference. First operand has 548 places, 518 transitions, 4840 flow. Second operand 13 states and 171 transitions. [2024-06-14 12:03:51,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 550 transitions, 6556 flow [2024-06-14 12:03:54,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 550 transitions, 6154 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:54,659 INFO L231 Difference]: Finished difference. Result has 547 places, 515 transitions, 4849 flow [2024-06-14 12:03:54,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4849, PETRI_PLACES=547, PETRI_TRANSITIONS=515} [2024-06-14 12:03:54,659 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-14 12:03:54,659 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 515 transitions, 4849 flow [2024-06-14 12:03:54,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:54,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:54,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:54,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 12:03:54,659 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:54,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 246868239, now seen corresponding path program 16 times [2024-06-14 12:03:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:54,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642399322] [2024-06-14 12:03:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:55,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642399322] [2024-06-14 12:03:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642399322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:55,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:55,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:03:55,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136491307] [2024-06-14 12:03:55,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:55,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:03:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:03:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:03:55,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:03:55,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 515 transitions, 4849 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:55,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:55,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:03:55,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:56,891 INFO L124 PetriNetUnfolderBase]: 1456/2665 cut-off events. [2024-06-14 12:03:56,891 INFO L125 PetriNetUnfolderBase]: For 870584/870584 co-relation queries the response was YES. [2024-06-14 12:03:56,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 2665 events. 1456/2665 cut-off events. For 870584/870584 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 17018 event pairs, 145 based on Foata normal form. 10/2674 useless extension candidates. Maximal degree in co-relation 20225. Up to 1673 conditions per place. [2024-06-14 12:03:56,936 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 315 selfloop transitions, 211 changer transitions 15/543 dead transitions. [2024-06-14 12:03:56,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 543 transitions, 6119 flow [2024-06-14 12:03:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:03:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:03:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-14 12:03:56,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-14 12:03:56,937 INFO L175 Difference]: Start difference. First operand has 547 places, 515 transitions, 4849 flow. Second operand 13 states and 168 transitions. [2024-06-14 12:03:56,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 543 transitions, 6119 flow [2024-06-14 12:04:00,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 543 transitions, 5689 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:04:00,265 INFO L231 Difference]: Finished difference. Result has 546 places, 508 transitions, 4772 flow [2024-06-14 12:04:00,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4772, PETRI_PLACES=546, PETRI_TRANSITIONS=508} [2024-06-14 12:04:00,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-14 12:04:00,266 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 508 transitions, 4772 flow [2024-06-14 12:04:00,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:00,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:00,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:00,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 12:04:00,266 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash 253297329, now seen corresponding path program 17 times [2024-06-14 12:04:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:00,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787652480] [2024-06-14 12:04:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:00,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787652480] [2024-06-14 12:04:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787652480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:01,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:01,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911723252] [2024-06-14 12:04:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:01,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:01,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 508 transitions, 4772 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:01,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:01,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:01,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:02,940 INFO L124 PetriNetUnfolderBase]: 1409/2576 cut-off events. [2024-06-14 12:04:02,941 INFO L125 PetriNetUnfolderBase]: For 696020/696020 co-relation queries the response was YES. [2024-06-14 12:04:02,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2576 events. 1409/2576 cut-off events. For 696020/696020 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16400 event pairs, 142 based on Foata normal form. 10/2585 useless extension candidates. Maximal degree in co-relation 17733. Up to 1650 conditions per place. [2024-06-14 12:04:02,985 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 328 selfloop transitions, 191 changer transitions 14/535 dead transitions. [2024-06-14 12:04:02,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 535 transitions, 6022 flow [2024-06-14 12:04:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-14 12:04:02,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-14 12:04:02,986 INFO L175 Difference]: Start difference. First operand has 546 places, 508 transitions, 4772 flow. Second operand 13 states and 162 transitions. [2024-06-14 12:04:02,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 535 transitions, 6022 flow [2024-06-14 12:04:05,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 535 transitions, 5592 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:04:05,882 INFO L231 Difference]: Finished difference. Result has 542 places, 502 transitions, 4667 flow [2024-06-14 12:04:05,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4342, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4667, PETRI_PLACES=542, PETRI_TRANSITIONS=502} [2024-06-14 12:04:05,883 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-14 12:04:05,883 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 502 transitions, 4667 flow [2024-06-14 12:04:05,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:05,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:05,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 12:04:05,883 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:05,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash 8025061, now seen corresponding path program 18 times [2024-06-14 12:04:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360240507] [2024-06-14 12:04:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:07,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360240507] [2024-06-14 12:04:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360240507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:07,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:07,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:07,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366369151] [2024-06-14 12:04:07,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:07,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:07,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:07,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:07,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 502 transitions, 4667 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:07,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:07,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:07,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:08,150 INFO L124 PetriNetUnfolderBase]: 1414/2599 cut-off events. [2024-06-14 12:04:08,150 INFO L125 PetriNetUnfolderBase]: For 817020/817020 co-relation queries the response was YES. [2024-06-14 12:04:08,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19869 conditions, 2599 events. 1414/2599 cut-off events. For 817020/817020 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 16592 event pairs, 165 based on Foata normal form. 8/2606 useless extension candidates. Maximal degree in co-relation 19644. Up to 1557 conditions per place. [2024-06-14 12:04:08,192 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 342 selfloop transitions, 182 changer transitions 7/533 dead transitions. [2024-06-14 12:04:08,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 533 transitions, 6343 flow [2024-06-14 12:04:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 173 transitions. [2024-06-14 12:04:08,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-14 12:04:08,193 INFO L175 Difference]: Start difference. First operand has 542 places, 502 transitions, 4667 flow. Second operand 13 states and 173 transitions. [2024-06-14 12:04:08,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 533 transitions, 6343 flow [2024-06-14 12:04:11,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 533 transitions, 5953 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:04:11,488 INFO L231 Difference]: Finished difference. Result has 538 places, 500 transitions, 4636 flow [2024-06-14 12:04:11,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4636, PETRI_PLACES=538, PETRI_TRANSITIONS=500} [2024-06-14 12:04:11,488 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-14 12:04:11,488 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 500 transitions, 4636 flow [2024-06-14 12:04:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:11,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:11,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:11,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 12:04:11,489 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1576819637, now seen corresponding path program 4 times [2024-06-14 12:04:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139850125] [2024-06-14 12:04:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:12,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139850125] [2024-06-14 12:04:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139850125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:12,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985082175] [2024-06-14 12:04:12,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:12,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:12,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 500 transitions, 4636 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:12,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:12,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:12,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:13,626 INFO L124 PetriNetUnfolderBase]: 1412/2589 cut-off events. [2024-06-14 12:04:13,626 INFO L125 PetriNetUnfolderBase]: For 714334/714334 co-relation queries the response was YES. [2024-06-14 12:04:13,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19793 conditions, 2589 events. 1412/2589 cut-off events. For 714334/714334 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 16516 event pairs, 183 based on Foata normal form. 2/2590 useless extension candidates. Maximal degree in co-relation 19569. Up to 1711 conditions per place. [2024-06-14 12:04:13,668 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 345 selfloop transitions, 177 changer transitions 0/524 dead transitions. [2024-06-14 12:04:13,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 524 transitions, 5806 flow [2024-06-14 12:04:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:04:13,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:04:13,669 INFO L175 Difference]: Start difference. First operand has 538 places, 500 transitions, 4636 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:04:13,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 524 transitions, 5806 flow [2024-06-14 12:04:16,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 524 transitions, 5434 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:04:16,723 INFO L231 Difference]: Finished difference. Result has 536 places, 505 transitions, 4699 flow [2024-06-14 12:04:16,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4699, PETRI_PLACES=536, PETRI_TRANSITIONS=505} [2024-06-14 12:04:16,724 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-14 12:04:16,724 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 505 transitions, 4699 flow [2024-06-14 12:04:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:16,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:16,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:16,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 12:04:16,724 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:16,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1374805937, now seen corresponding path program 5 times [2024-06-14 12:04:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132403012] [2024-06-14 12:04:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:16,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:17,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:17,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132403012] [2024-06-14 12:04:17,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132403012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:17,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:17,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:17,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455232457] [2024-06-14 12:04:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:17,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:17,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:18,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:18,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 505 transitions, 4699 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:18,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:18,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:18,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:18,887 INFO L124 PetriNetUnfolderBase]: 1416/2597 cut-off events. [2024-06-14 12:04:18,887 INFO L125 PetriNetUnfolderBase]: For 706586/706586 co-relation queries the response was YES. [2024-06-14 12:04:18,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19810 conditions, 2597 events. 1416/2597 cut-off events. For 706586/706586 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16587 event pairs, 181 based on Foata normal form. 2/2598 useless extension candidates. Maximal degree in co-relation 19587. Up to 1719 conditions per place. [2024-06-14 12:04:18,931 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 172 changer transitions 0/526 dead transitions. [2024-06-14 12:04:18,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 526 transitions, 5823 flow [2024-06-14 12:04:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:04:18,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:04:18,933 INFO L175 Difference]: Start difference. First operand has 536 places, 505 transitions, 4699 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:04:18,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 526 transitions, 5823 flow [2024-06-14 12:04:22,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 526 transitions, 5472 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:04:22,100 INFO L231 Difference]: Finished difference. Result has 539 places, 506 transitions, 4719 flow [2024-06-14 12:04:22,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4719, PETRI_PLACES=539, PETRI_TRANSITIONS=506} [2024-06-14 12:04:22,101 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-14 12:04:22,101 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 506 transitions, 4719 flow [2024-06-14 12:04:22,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:22,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:22,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 12:04:22,102 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:22,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -515248931, now seen corresponding path program 19 times [2024-06-14 12:04:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18728415] [2024-06-14 12:04:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18728415] [2024-06-14 12:04:23,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18728415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:23,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:23,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154184964] [2024-06-14 12:04:23,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:23,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:23,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 506 transitions, 4719 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:23,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:23,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:23,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:24,270 INFO L124 PetriNetUnfolderBase]: 1432/2633 cut-off events. [2024-06-14 12:04:24,270 INFO L125 PetriNetUnfolderBase]: For 842692/842692 co-relation queries the response was YES. [2024-06-14 12:04:24,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20102 conditions, 2633 events. 1432/2633 cut-off events. For 842692/842692 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 16861 event pairs, 175 based on Foata normal form. 10/2642 useless extension candidates. Maximal degree in co-relation 19879. Up to 1662 conditions per place. [2024-06-14 12:04:24,311 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 332 selfloop transitions, 186 changer transitions 11/531 dead transitions. [2024-06-14 12:04:24,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 531 transitions, 5955 flow [2024-06-14 12:04:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-14 12:04:24,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-14 12:04:24,312 INFO L175 Difference]: Start difference. First operand has 539 places, 506 transitions, 4719 flow. Second operand 13 states and 164 transitions. [2024-06-14 12:04:24,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 531 transitions, 5955 flow [2024-06-14 12:04:27,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 531 transitions, 5587 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 12:04:27,346 INFO L231 Difference]: Finished difference. Result has 542 places, 503 transitions, 4711 flow [2024-06-14 12:04:27,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4711, PETRI_PLACES=542, PETRI_TRANSITIONS=503} [2024-06-14 12:04:27,346 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-14 12:04:27,347 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 503 transitions, 4711 flow [2024-06-14 12:04:27,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:27,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:27,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 12:04:27,347 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:27,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -342348477, now seen corresponding path program 6 times [2024-06-14 12:04:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393919164] [2024-06-14 12:04:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393919164] [2024-06-14 12:04:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393919164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:28,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:28,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791824324] [2024-06-14 12:04:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:28,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:28,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:28,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:28,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 503 transitions, 4711 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:28,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:28,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:29,318 INFO L124 PetriNetUnfolderBase]: 1424/2613 cut-off events. [2024-06-14 12:04:29,318 INFO L125 PetriNetUnfolderBase]: For 722396/722396 co-relation queries the response was YES. [2024-06-14 12:04:29,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19999 conditions, 2613 events. 1424/2613 cut-off events. For 722396/722396 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 16729 event pairs, 185 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 19775. Up to 1727 conditions per place. [2024-06-14 12:04:29,362 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 174 changer transitions 0/528 dead transitions. [2024-06-14 12:04:29,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 528 transitions, 5897 flow [2024-06-14 12:04:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:04:29,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:04:29,363 INFO L175 Difference]: Start difference. First operand has 542 places, 503 transitions, 4711 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:04:29,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 528 transitions, 5897 flow [2024-06-14 12:04:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 528 transitions, 5509 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:04:32,854 INFO L231 Difference]: Finished difference. Result has 539 places, 508 transitions, 4756 flow [2024-06-14 12:04:32,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4756, PETRI_PLACES=539, PETRI_TRANSITIONS=508} [2024-06-14 12:04:32,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-14 12:04:32,855 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 508 transitions, 4756 flow [2024-06-14 12:04:32,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:32,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:32,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:32,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 12:04:32,855 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -349015151, now seen corresponding path program 20 times [2024-06-14 12:04:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149635289] [2024-06-14 12:04:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:32,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:33,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:33,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149635289] [2024-06-14 12:04:33,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149635289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:33,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:33,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:33,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796579938] [2024-06-14 12:04:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:33,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:34,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:34,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 508 transitions, 4756 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:34,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:34,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:34,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:35,116 INFO L124 PetriNetUnfolderBase]: 1440/2649 cut-off events. [2024-06-14 12:04:35,117 INFO L125 PetriNetUnfolderBase]: For 843248/843248 co-relation queries the response was YES. [2024-06-14 12:04:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20160 conditions, 2649 events. 1440/2649 cut-off events. For 843248/843248 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 16998 event pairs, 179 based on Foata normal form. 10/2658 useless extension candidates. Maximal degree in co-relation 19937. Up to 1650 conditions per place. [2024-06-14 12:04:35,161 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 334 selfloop transitions, 186 changer transitions 13/535 dead transitions. [2024-06-14 12:04:35,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 535 transitions, 6004 flow [2024-06-14 12:04:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-14 12:04:35,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-14 12:04:35,162 INFO L175 Difference]: Start difference. First operand has 539 places, 508 transitions, 4756 flow. Second operand 13 states and 170 transitions. [2024-06-14 12:04:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 535 transitions, 6004 flow [2024-06-14 12:04:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 535 transitions, 5614 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:04:38,409 INFO L231 Difference]: Finished difference. Result has 543 places, 503 transitions, 4695 flow [2024-06-14 12:04:38,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4695, PETRI_PLACES=543, PETRI_TRANSITIONS=503} [2024-06-14 12:04:38,410 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-14 12:04:38,410 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 503 transitions, 4695 flow [2024-06-14 12:04:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:38,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:38,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 12:04:38,411 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -342340107, now seen corresponding path program 7 times [2024-06-14 12:04:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902447503] [2024-06-14 12:04:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:39,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:39,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902447503] [2024-06-14 12:04:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902447503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:39,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035643185] [2024-06-14 12:04:39,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:39,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:39,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:39,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:39,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 503 transitions, 4695 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:39,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:39,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:39,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:40,714 INFO L124 PetriNetUnfolderBase]: 1432/2633 cut-off events. [2024-06-14 12:04:40,714 INFO L125 PetriNetUnfolderBase]: For 756364/756364 co-relation queries the response was YES. [2024-06-14 12:04:40,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 2633 events. 1432/2633 cut-off events. For 756364/756364 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 16946 event pairs, 328 based on Foata normal form. 2/2634 useless extension candidates. Maximal degree in co-relation 20141. Up to 2043 conditions per place. [2024-06-14 12:04:40,756 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 447 selfloop transitions, 114 changer transitions 0/563 dead transitions. [2024-06-14 12:04:40,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 563 transitions, 6471 flow [2024-06-14 12:04:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 12:04:40,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-14 12:04:40,757 INFO L175 Difference]: Start difference. First operand has 543 places, 503 transitions, 4695 flow. Second operand 13 states and 160 transitions. [2024-06-14 12:04:40,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 563 transitions, 6471 flow [2024-06-14 12:04:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 563 transitions, 6061 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 12:04:43,896 INFO L231 Difference]: Finished difference. Result has 542 places, 511 transitions, 4644 flow [2024-06-14 12:04:43,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4644, PETRI_PLACES=542, PETRI_TRANSITIONS=511} [2024-06-14 12:04:43,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-14 12:04:43,897 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 511 transitions, 4644 flow [2024-06-14 12:04:43,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:43,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:43,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 12:04:43,898 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:43,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -515253581, now seen corresponding path program 21 times [2024-06-14 12:04:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390897767] [2024-06-14 12:04:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390897767] [2024-06-14 12:04:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390897767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:45,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990508901] [2024-06-14 12:04:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:45,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:45,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 511 transitions, 4644 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:45,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:45,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:45,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:46,101 INFO L124 PetriNetUnfolderBase]: 1444/2661 cut-off events. [2024-06-14 12:04:46,101 INFO L125 PetriNetUnfolderBase]: For 842242/842242 co-relation queries the response was YES. [2024-06-14 12:04:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20312 conditions, 2661 events. 1444/2661 cut-off events. For 842242/842242 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 17124 event pairs, 174 based on Foata normal form. 8/2668 useless extension candidates. Maximal degree in co-relation 20087. Up to 1692 conditions per place. [2024-06-14 12:04:46,144 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 334 selfloop transitions, 184 changer transitions 15/535 dead transitions. [2024-06-14 12:04:46,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 535 transitions, 5824 flow [2024-06-14 12:04:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-14 12:04:46,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-14 12:04:46,145 INFO L175 Difference]: Start difference. First operand has 542 places, 511 transitions, 4644 flow. Second operand 13 states and 161 transitions. [2024-06-14 12:04:46,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 535 transitions, 5824 flow [2024-06-14 12:04:49,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 535 transitions, 5771 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 12:04:49,832 INFO L231 Difference]: Finished difference. Result has 551 places, 505 transitions, 4907 flow [2024-06-14 12:04:49,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4591, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4907, PETRI_PLACES=551, PETRI_TRANSITIONS=505} [2024-06-14 12:04:49,832 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 519 predicate places. [2024-06-14 12:04:49,832 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 505 transitions, 4907 flow [2024-06-14 12:04:49,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:49,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:49,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:49,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 12:04:49,832 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:49,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 14458801, now seen corresponding path program 22 times [2024-06-14 12:04:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:49,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374599183] [2024-06-14 12:04:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:49,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374599183] [2024-06-14 12:04:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374599183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:51,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:51,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:51,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709796741] [2024-06-14 12:04:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:51,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:51,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:51,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:51,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 505 transitions, 4907 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:51,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:51,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:51,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:52,452 INFO L124 PetriNetUnfolderBase]: 1443/2658 cut-off events. [2024-06-14 12:04:52,453 INFO L125 PetriNetUnfolderBase]: For 887555/887555 co-relation queries the response was YES. [2024-06-14 12:04:52,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20811 conditions, 2658 events. 1443/2658 cut-off events. For 887555/887555 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 17111 event pairs, 190 based on Foata normal form. 10/2667 useless extension candidates. Maximal degree in co-relation 20584. Up to 1732 conditions per place. [2024-06-14 12:04:52,496 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 350 selfloop transitions, 169 changer transitions 12/533 dead transitions. [2024-06-14 12:04:52,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 533 transitions, 6153 flow [2024-06-14 12:04:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-14 12:04:52,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-14 12:04:52,497 INFO L175 Difference]: Start difference. First operand has 551 places, 505 transitions, 4907 flow. Second operand 13 states and 164 transitions. [2024-06-14 12:04:52,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 533 transitions, 6153 flow [2024-06-14 12:04:56,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 533 transitions, 5779 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:04:56,369 INFO L231 Difference]: Finished difference. Result has 547 places, 503 transitions, 4849 flow [2024-06-14 12:04:56,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4849, PETRI_PLACES=547, PETRI_TRANSITIONS=503} [2024-06-14 12:04:56,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-14 12:04:56,370 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 503 transitions, 4849 flow [2024-06-14 12:04:56,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:56,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:56,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 12:04:56,370 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:56,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1725184125, now seen corresponding path program 23 times [2024-06-14 12:04:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712817703] [2024-06-14 12:04:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:57,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:57,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712817703] [2024-06-14 12:04:57,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712817703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:57,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:57,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:04:57,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276227648] [2024-06-14 12:04:57,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:57,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:04:57,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:04:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:04:57,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:04:57,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 503 transitions, 4849 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:57,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:57,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:04:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:58,556 INFO L124 PetriNetUnfolderBase]: 1429/2640 cut-off events. [2024-06-14 12:04:58,556 INFO L125 PetriNetUnfolderBase]: For 877592/877592 co-relation queries the response was YES. [2024-06-14 12:04:58,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20602 conditions, 2640 events. 1429/2640 cut-off events. For 877592/877592 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 16988 event pairs, 176 based on Foata normal form. 10/2649 useless extension candidates. Maximal degree in co-relation 20376. Up to 1639 conditions per place. [2024-06-14 12:04:58,598 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 330 selfloop transitions, 186 changer transitions 11/529 dead transitions. [2024-06-14 12:04:58,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 529 transitions, 6077 flow [2024-06-14 12:04:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:04:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:04:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 12:04:58,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-14 12:04:58,599 INFO L175 Difference]: Start difference. First operand has 547 places, 503 transitions, 4849 flow. Second operand 13 states and 166 transitions. [2024-06-14 12:04:58,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 529 transitions, 6077 flow [2024-06-14 12:05:02,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 529 transitions, 5733 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:05:02,371 INFO L231 Difference]: Finished difference. Result has 546 places, 500 transitions, 4864 flow [2024-06-14 12:05:02,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4505, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4864, PETRI_PLACES=546, PETRI_TRANSITIONS=500} [2024-06-14 12:05:02,371 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-14 12:05:02,371 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 500 transitions, 4864 flow [2024-06-14 12:05:02,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:02,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:02,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 12:05:02,371 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:02,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1961547779, now seen corresponding path program 8 times [2024-06-14 12:05:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749282451] [2024-06-14 12:05:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:03,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749282451] [2024-06-14 12:05:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749282451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360756234] [2024-06-14 12:05:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:04,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:04,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 500 transitions, 4864 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:04,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:04,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:04,998 INFO L124 PetriNetUnfolderBase]: 1452/2689 cut-off events. [2024-06-14 12:05:04,998 INFO L125 PetriNetUnfolderBase]: For 1000924/1000924 co-relation queries the response was YES. [2024-06-14 12:05:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 2689 events. 1452/2689 cut-off events. For 1000924/1000924 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 17357 event pairs, 194 based on Foata normal form. 8/2696 useless extension candidates. Maximal degree in co-relation 22598. Up to 1623 conditions per place. [2024-06-14 12:05:05,045 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 337 selfloop transitions, 186 changer transitions 8/533 dead transitions. [2024-06-14 12:05:05,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 533 transitions, 6562 flow [2024-06-14 12:05:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:05:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:05:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-14 12:05:05,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-14 12:05:05,046 INFO L175 Difference]: Start difference. First operand has 546 places, 500 transitions, 4864 flow. Second operand 14 states and 177 transitions. [2024-06-14 12:05:05,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 533 transitions, 6562 flow [2024-06-14 12:05:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 6168 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-14 12:05:09,705 INFO L231 Difference]: Finished difference. Result has 545 places, 499 transitions, 4838 flow [2024-06-14 12:05:09,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4838, PETRI_PLACES=545, PETRI_TRANSITIONS=499} [2024-06-14 12:05:09,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-14 12:05:09,706 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 499 transitions, 4838 flow [2024-06-14 12:05:09,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:09,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:09,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 12:05:09,706 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:09,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 8209635, now seen corresponding path program 9 times [2024-06-14 12:05:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119193027] [2024-06-14 12:05:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119193027] [2024-06-14 12:05:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119193027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483646819] [2024-06-14 12:05:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:10,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:11,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:11,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 499 transitions, 4838 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:11,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:11,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:11,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:11,817 INFO L124 PetriNetUnfolderBase]: 1433/2652 cut-off events. [2024-06-14 12:05:11,817 INFO L125 PetriNetUnfolderBase]: For 901715/901715 co-relation queries the response was YES. [2024-06-14 12:05:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22098 conditions, 2652 events. 1433/2652 cut-off events. For 901715/901715 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17155 event pairs, 206 based on Foata normal form. 4/2655 useless extension candidates. Maximal degree in co-relation 21874. Up to 1768 conditions per place. [2024-06-14 12:05:11,860 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 168 changer transitions 0/521 dead transitions. [2024-06-14 12:05:11,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 521 transitions, 5962 flow [2024-06-14 12:05:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:05:11,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:05:11,861 INFO L175 Difference]: Start difference. First operand has 545 places, 499 transitions, 4838 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:05:11,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 521 transitions, 5962 flow [2024-06-14 12:05:16,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 521 transitions, 5579 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-14 12:05:16,088 INFO L231 Difference]: Finished difference. Result has 543 places, 500 transitions, 4825 flow [2024-06-14 12:05:16,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4825, PETRI_PLACES=543, PETRI_TRANSITIONS=500} [2024-06-14 12:05:16,089 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-14 12:05:16,089 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 500 transitions, 4825 flow [2024-06-14 12:05:16,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:16,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:16,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:16,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 12:05:16,089 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:16,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:16,089 INFO L85 PathProgramCache]: Analyzing trace with hash -348842171, now seen corresponding path program 24 times [2024-06-14 12:05:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371761223] [2024-06-14 12:05:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371761223] [2024-06-14 12:05:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371761223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:17,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:17,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442004968] [2024-06-14 12:05:17,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:17,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:17,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:17,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 500 transitions, 4825 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:17,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:17,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:17,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:18,507 INFO L124 PetriNetUnfolderBase]: 1420/2629 cut-off events. [2024-06-14 12:05:18,507 INFO L125 PetriNetUnfolderBase]: For 826764/826764 co-relation queries the response was YES. [2024-06-14 12:05:18,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20066 conditions, 2629 events. 1420/2629 cut-off events. For 826764/826764 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16994 event pairs, 191 based on Foata normal form. 10/2638 useless extension candidates. Maximal degree in co-relation 19844. Up to 1703 conditions per place. [2024-06-14 12:05:18,549 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 349 selfloop transitions, 164 changer transitions 12/527 dead transitions. [2024-06-14 12:05:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 527 transitions, 6049 flow [2024-06-14 12:05:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:05:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:05:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 12:05:18,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 12:05:18,550 INFO L175 Difference]: Start difference. First operand has 543 places, 500 transitions, 4825 flow. Second operand 13 states and 165 transitions. [2024-06-14 12:05:18,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 527 transitions, 6049 flow [2024-06-14 12:05:22,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 527 transitions, 5680 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-14 12:05:22,048 INFO L231 Difference]: Finished difference. Result has 545 places, 496 transitions, 4746 flow [2024-06-14 12:05:22,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4746, PETRI_PLACES=545, PETRI_TRANSITIONS=496} [2024-06-14 12:05:22,049 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-14 12:05:22,049 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 496 transitions, 4746 flow [2024-06-14 12:05:22,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:22,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:22,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 12:05:22,049 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:22,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash -519837551, now seen corresponding path program 25 times [2024-06-14 12:05:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340040271] [2024-06-14 12:05:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:23,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:23,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340040271] [2024-06-14 12:05:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340040271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:23,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:23,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987644220] [2024-06-14 12:05:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:23,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:23,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:23,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 496 transitions, 4746 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:23,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:23,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:23,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:24,628 INFO L124 PetriNetUnfolderBase]: 1438/2675 cut-off events. [2024-06-14 12:05:24,628 INFO L125 PetriNetUnfolderBase]: For 993872/993872 co-relation queries the response was YES. [2024-06-14 12:05:24,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22493 conditions, 2675 events. 1438/2675 cut-off events. For 993872/993872 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17334 event pairs, 203 based on Foata normal form. 8/2682 useless extension candidates. Maximal degree in co-relation 22270. Up to 1209 conditions per place. [2024-06-14 12:05:24,672 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 326 selfloop transitions, 188 changer transitions 10/526 dead transitions. [2024-06-14 12:05:24,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 526 transitions, 6406 flow [2024-06-14 12:05:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:05:24,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:05:24,673 INFO L175 Difference]: Start difference. First operand has 545 places, 496 transitions, 4746 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:05:24,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 526 transitions, 6406 flow [2024-06-14 12:05:29,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 526 transitions, 6047 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-14 12:05:29,172 INFO L231 Difference]: Finished difference. Result has 540 places, 493 transitions, 4762 flow [2024-06-14 12:05:29,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4762, PETRI_PLACES=540, PETRI_TRANSITIONS=493} [2024-06-14 12:05:29,172 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 508 predicate places. [2024-06-14 12:05:29,172 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 493 transitions, 4762 flow [2024-06-14 12:05:29,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:29,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:29,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:29,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 12:05:29,173 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:29,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -519717581, now seen corresponding path program 26 times [2024-06-14 12:05:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734884765] [2024-06-14 12:05:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734884765] [2024-06-14 12:05:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734884765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:30,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084255264] [2024-06-14 12:05:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:30,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:30,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 493 transitions, 4762 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:30,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:30,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:30,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:31,632 INFO L124 PetriNetUnfolderBase]: 1432/2665 cut-off events. [2024-06-14 12:05:31,632 INFO L125 PetriNetUnfolderBase]: For 1017200/1017200 co-relation queries the response was YES. [2024-06-14 12:05:31,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22482 conditions, 2665 events. 1432/2665 cut-off events. For 1017200/1017200 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 17298 event pairs, 205 based on Foata normal form. 10/2674 useless extension candidates. Maximal degree in co-relation 22260. Up to 1700 conditions per place. [2024-06-14 12:05:31,678 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 335 selfloop transitions, 171 changer transitions 11/519 dead transitions. [2024-06-14 12:05:31,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 519 transitions, 5962 flow [2024-06-14 12:05:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:05:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:05:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-14 12:05:31,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-14 12:05:31,679 INFO L175 Difference]: Start difference. First operand has 540 places, 493 transitions, 4762 flow. Second operand 13 states and 164 transitions. [2024-06-14 12:05:31,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 519 transitions, 5962 flow [2024-06-14 12:05:35,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 519 transitions, 5598 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:05:35,804 INFO L231 Difference]: Finished difference. Result has 538 places, 490 transitions, 4727 flow [2024-06-14 12:05:35,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4727, PETRI_PLACES=538, PETRI_TRANSITIONS=490} [2024-06-14 12:05:35,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-14 12:05:35,805 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 490 transitions, 4727 flow [2024-06-14 12:05:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:35,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:35,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:35,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 12:05:35,806 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:35,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -519722231, now seen corresponding path program 27 times [2024-06-14 12:05:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:35,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037732774] [2024-06-14 12:05:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:35,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037732774] [2024-06-14 12:05:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037732774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730649612] [2024-06-14 12:05:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:37,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:37,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:37,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 490 transitions, 4727 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:37,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:37,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:37,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:38,543 INFO L124 PetriNetUnfolderBase]: 1420/2645 cut-off events. [2024-06-14 12:05:38,543 INFO L125 PetriNetUnfolderBase]: For 963188/963188 co-relation queries the response was YES. [2024-06-14 12:05:38,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22222 conditions, 2645 events. 1420/2645 cut-off events. For 963188/963188 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 17170 event pairs, 205 based on Foata normal form. 8/2652 useless extension candidates. Maximal degree in co-relation 22002. Up to 1430 conditions per place. [2024-06-14 12:05:38,586 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 313 selfloop transitions, 184 changer transitions 14/513 dead transitions. [2024-06-14 12:05:38,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 513 transitions, 5857 flow [2024-06-14 12:05:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:05:38,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:05:38,587 INFO L175 Difference]: Start difference. First operand has 538 places, 490 transitions, 4727 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:05:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 513 transitions, 5857 flow [2024-06-14 12:05:42,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 513 transitions, 5505 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:05:42,857 INFO L231 Difference]: Finished difference. Result has 535 places, 484 transitions, 4701 flow [2024-06-14 12:05:42,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4701, PETRI_PLACES=535, PETRI_TRANSITIONS=484} [2024-06-14 12:05:42,858 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-14 12:05:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 484 transitions, 4701 flow [2024-06-14 12:05:42,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:42,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:42,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:42,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 12:05:42,858 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:42,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1604791217, now seen corresponding path program 10 times [2024-06-14 12:05:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:42,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115943291] [2024-06-14 12:05:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:42,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:44,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115943291] [2024-06-14 12:05:44,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115943291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:44,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:44,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:44,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633128514] [2024-06-14 12:05:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:44,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:44,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:44,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 484 transitions, 4701 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:44,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:44,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:44,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:45,156 INFO L124 PetriNetUnfolderBase]: 1407/2614 cut-off events. [2024-06-14 12:05:45,156 INFO L125 PetriNetUnfolderBase]: For 895228/895228 co-relation queries the response was YES. [2024-06-14 12:05:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22407 conditions, 2614 events. 1407/2614 cut-off events. For 895228/895228 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16920 event pairs, 216 based on Foata normal form. 2/2615 useless extension candidates. Maximal degree in co-relation 22188. Up to 1582 conditions per place. [2024-06-14 12:05:45,199 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 183 changer transitions 0/506 dead transitions. [2024-06-14 12:05:45,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 506 transitions, 6169 flow [2024-06-14 12:05:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:05:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:05:45,200 INFO L175 Difference]: Start difference. First operand has 535 places, 484 transitions, 4701 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:05:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 506 transitions, 6169 flow [2024-06-14 12:05:49,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 506 transitions, 5775 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-14 12:05:49,301 INFO L231 Difference]: Finished difference. Result has 527 places, 486 transitions, 4745 flow [2024-06-14 12:05:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4745, PETRI_PLACES=527, PETRI_TRANSITIONS=486} [2024-06-14 12:05:49,301 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-14 12:05:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 486 transitions, 4745 flow [2024-06-14 12:05:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:49,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:49,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:49,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-14 12:05:49,301 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:49,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1596213393, now seen corresponding path program 28 times [2024-06-14 12:05:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:49,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376310115] [2024-06-14 12:05:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:49,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376310115] [2024-06-14 12:05:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376310115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:51,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:51,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541824808] [2024-06-14 12:05:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:51,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:51,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:51,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 486 transitions, 4745 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:51,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:51,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:51,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:52,300 INFO L124 PetriNetUnfolderBase]: 1394/2591 cut-off events. [2024-06-14 12:05:52,300 INFO L125 PetriNetUnfolderBase]: For 826459/826459 co-relation queries the response was YES. [2024-06-14 12:05:52,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 2591 events. 1394/2591 cut-off events. For 826459/826459 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16752 event pairs, 197 based on Foata normal form. 10/2600 useless extension candidates. Maximal degree in co-relation 20036. Up to 1659 conditions per place. [2024-06-14 12:05:52,340 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 324 selfloop transitions, 163 changer transitions 22/511 dead transitions. [2024-06-14 12:05:52,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 511 transitions, 5915 flow [2024-06-14 12:05:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:05:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:05:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-14 12:05:52,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-14 12:05:52,341 INFO L175 Difference]: Start difference. First operand has 527 places, 486 transitions, 4745 flow. Second operand 13 states and 161 transitions. [2024-06-14 12:05:52,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 511 transitions, 5915 flow [2024-06-14 12:05:55,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 511 transitions, 5671 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:05:55,613 INFO L231 Difference]: Finished difference. Result has 532 places, 476 transitions, 4725 flow [2024-06-14 12:05:55,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4725, PETRI_PLACES=532, PETRI_TRANSITIONS=476} [2024-06-14 12:05:55,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-14 12:05:55,614 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 476 transitions, 4725 flow [2024-06-14 12:05:55,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:55,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:55,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:55,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-14 12:05:55,614 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:55,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1374814307, now seen corresponding path program 11 times [2024-06-14 12:05:55,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:55,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803981707] [2024-06-14 12:05:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:55,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803981707] [2024-06-14 12:05:56,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803981707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:56,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:56,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:05:56,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343274174] [2024-06-14 12:05:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:56,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:05:56,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:05:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:05:57,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:05:57,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 476 transitions, 4725 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:57,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:57,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:05:57,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:57,852 INFO L124 PetriNetUnfolderBase]: 1344/2501 cut-off events. [2024-06-14 12:05:57,852 INFO L125 PetriNetUnfolderBase]: For 717114/717114 co-relation queries the response was YES. [2024-06-14 12:05:57,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 2501 events. 1344/2501 cut-off events. For 717114/717114 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16096 event pairs, 195 based on Foata normal form. 2/2502 useless extension candidates. Maximal degree in co-relation 19790. Up to 1632 conditions per place. [2024-06-14 12:05:57,892 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 160 changer transitions 0/498 dead transitions. [2024-06-14 12:05:57,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 498 transitions, 6173 flow [2024-06-14 12:05:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:05:57,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:05:57,893 INFO L175 Difference]: Start difference. First operand has 532 places, 476 transitions, 4725 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:05:57,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 498 transitions, 6173 flow [2024-06-14 12:06:00,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 498 transitions, 5831 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:06:00,968 INFO L231 Difference]: Finished difference. Result has 525 places, 478 transitions, 4769 flow [2024-06-14 12:06:00,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4769, PETRI_PLACES=525, PETRI_TRANSITIONS=478} [2024-06-14 12:06:00,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-14 12:06:00,969 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 478 transitions, 4769 flow [2024-06-14 12:06:00,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:00,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:00,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-14 12:06:00,969 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:00,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2078254205, now seen corresponding path program 29 times [2024-06-14 12:06:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679091313] [2024-06-14 12:06:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679091313] [2024-06-14 12:06:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679091313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:02,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117772153] [2024-06-14 12:06:02,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:02,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:02,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 478 transitions, 4769 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:02,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:02,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:02,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:03,424 INFO L124 PetriNetUnfolderBase]: 1366/2547 cut-off events. [2024-06-14 12:06:03,424 INFO L125 PetriNetUnfolderBase]: For 825317/825317 co-relation queries the response was YES. [2024-06-14 12:06:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20228 conditions, 2547 events. 1366/2547 cut-off events. For 825317/825317 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 16465 event pairs, 199 based on Foata normal form. 10/2556 useless extension candidates. Maximal degree in co-relation 20012. Up to 1659 conditions per place. [2024-06-14 12:06:03,458 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 336 selfloop transitions, 155 changer transitions 12/505 dead transitions. [2024-06-14 12:06:03,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 505 transitions, 5937 flow [2024-06-14 12:06:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-14 12:06:03,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-14 12:06:03,459 INFO L175 Difference]: Start difference. First operand has 525 places, 478 transitions, 4769 flow. Second operand 13 states and 162 transitions. [2024-06-14 12:06:03,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 505 transitions, 5937 flow [2024-06-14 12:06:06,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 505 transitions, 5717 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:06:06,586 INFO L231 Difference]: Finished difference. Result has 531 places, 476 transitions, 4834 flow [2024-06-14 12:06:06,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4834, PETRI_PLACES=531, PETRI_TRANSITIONS=476} [2024-06-14 12:06:06,586 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-14 12:06:06,586 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 476 transitions, 4834 flow [2024-06-14 12:06:06,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:06,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:06,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:06,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-14 12:06:06,587 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:06,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1368319187, now seen corresponding path program 12 times [2024-06-14 12:06:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695848846] [2024-06-14 12:06:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695848846] [2024-06-14 12:06:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695848846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140435381] [2024-06-14 12:06:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:07,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:07,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 476 transitions, 4834 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:07,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:07,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:07,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:08,757 INFO L124 PetriNetUnfolderBase]: 1333/2488 cut-off events. [2024-06-14 12:06:08,757 INFO L125 PetriNetUnfolderBase]: For 686364/686364 co-relation queries the response was YES. [2024-06-14 12:06:08,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19745 conditions, 2488 events. 1333/2488 cut-off events. For 686364/686364 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16070 event pairs, 194 based on Foata normal form. 2/2489 useless extension candidates. Maximal degree in co-relation 19526. Up to 1646 conditions per place. [2024-06-14 12:06:08,794 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 156 changer transitions 0/496 dead transitions. [2024-06-14 12:06:08,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 496 transitions, 5878 flow [2024-06-14 12:06:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:06:08,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:06:08,796 INFO L175 Difference]: Start difference. First operand has 531 places, 476 transitions, 4834 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:06:08,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 496 transitions, 5878 flow [2024-06-14 12:06:11,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 496 transitions, 5544 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-14 12:06:11,901 INFO L231 Difference]: Finished difference. Result has 529 places, 476 transitions, 4817 flow [2024-06-14 12:06:11,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4817, PETRI_PLACES=529, PETRI_TRANSITIONS=476} [2024-06-14 12:06:11,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-14 12:06:11,901 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 476 transitions, 4817 flow [2024-06-14 12:06:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:11,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:11,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-14 12:06:11,901 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:11,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1368134613, now seen corresponding path program 30 times [2024-06-14 12:06:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:11,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189604172] [2024-06-14 12:06:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:13,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:13,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189604172] [2024-06-14 12:06:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189604172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:13,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:13,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751672095] [2024-06-14 12:06:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:13,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 476 transitions, 4817 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:14,155 INFO L124 PetriNetUnfolderBase]: 1360/2549 cut-off events. [2024-06-14 12:06:14,156 INFO L125 PetriNetUnfolderBase]: For 859461/859461 co-relation queries the response was YES. [2024-06-14 12:06:14,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21090 conditions, 2549 events. 1360/2549 cut-off events. For 859461/859461 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 16469 event pairs, 195 based on Foata normal form. 8/2556 useless extension candidates. Maximal degree in co-relation 20872. Up to 1547 conditions per place. [2024-06-14 12:06:14,194 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 327 selfloop transitions, 168 changer transitions 9/506 dead transitions. [2024-06-14 12:06:14,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 506 transitions, 6379 flow [2024-06-14 12:06:14,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-14 12:06:14,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-14 12:06:14,195 INFO L175 Difference]: Start difference. First operand has 529 places, 476 transitions, 4817 flow. Second operand 13 states and 168 transitions. [2024-06-14 12:06:14,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 506 transitions, 6379 flow [2024-06-14 12:06:17,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 506 transitions, 6059 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:06:17,402 INFO L231 Difference]: Finished difference. Result has 531 places, 472 transitions, 4794 flow [2024-06-14 12:06:17,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4794, PETRI_PLACES=531, PETRI_TRANSITIONS=472} [2024-06-14 12:06:17,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-14 12:06:17,402 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 472 transitions, 4794 flow [2024-06-14 12:06:17,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:17,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:17,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:17,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-14 12:06:17,403 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:17,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1725357105, now seen corresponding path program 31 times [2024-06-14 12:06:17,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:17,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679884127] [2024-06-14 12:06:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:18,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679884127] [2024-06-14 12:06:18,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679884127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:18,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:18,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771287406] [2024-06-14 12:06:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:18,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:18,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:18,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 472 transitions, 4794 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:18,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:18,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:18,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:19,660 INFO L124 PetriNetUnfolderBase]: 1326/2483 cut-off events. [2024-06-14 12:06:19,660 INFO L125 PetriNetUnfolderBase]: For 751407/751407 co-relation queries the response was YES. [2024-06-14 12:06:19,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19049 conditions, 2483 events. 1326/2483 cut-off events. For 751407/751407 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 16044 event pairs, 188 based on Foata normal form. 10/2492 useless extension candidates. Maximal degree in co-relation 18830. Up to 1595 conditions per place. [2024-06-14 12:06:19,700 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 333 selfloop transitions, 151 changer transitions 12/498 dead transitions. [2024-06-14 12:06:19,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 498 transitions, 5942 flow [2024-06-14 12:06:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-14 12:06:19,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-14 12:06:19,701 INFO L175 Difference]: Start difference. First operand has 531 places, 472 transitions, 4794 flow. Second operand 13 states and 162 transitions. [2024-06-14 12:06:19,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 498 transitions, 5942 flow [2024-06-14 12:06:22,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 498 transitions, 5604 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:06:22,438 INFO L231 Difference]: Finished difference. Result has 529 places, 468 transitions, 4717 flow [2024-06-14 12:06:22,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4717, PETRI_PLACES=529, PETRI_TRANSITIONS=468} [2024-06-14 12:06:22,438 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-14 12:06:22,438 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 468 transitions, 4717 flow [2024-06-14 12:06:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:22,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:22,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:22,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-14 12:06:22,439 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:22,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1971544035, now seen corresponding path program 13 times [2024-06-14 12:06:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118673464] [2024-06-14 12:06:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118673464] [2024-06-14 12:06:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118673464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:23,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512889264] [2024-06-14 12:06:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:23,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:23,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:23,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 468 transitions, 4717 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:23,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:23,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:23,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:24,477 INFO L124 PetriNetUnfolderBase]: 1300/2437 cut-off events. [2024-06-14 12:06:24,477 INFO L125 PetriNetUnfolderBase]: For 624921/624921 co-relation queries the response was YES. [2024-06-14 12:06:24,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18660 conditions, 2437 events. 1300/2437 cut-off events. For 624921/624921 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 15732 event pairs, 198 based on Foata normal form. 2/2438 useless extension candidates. Maximal degree in co-relation 18442. Up to 1595 conditions per place. [2024-06-14 12:06:24,516 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 331 selfloop transitions, 154 changer transitions 0/487 dead transitions. [2024-06-14 12:06:24,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 487 transitions, 5765 flow [2024-06-14 12:06:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:24,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:06:24,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:06:24,517 INFO L175 Difference]: Start difference. First operand has 529 places, 468 transitions, 4717 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:06:24,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 487 transitions, 5765 flow [2024-06-14 12:06:27,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 487 transitions, 5455 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:06:27,424 INFO L231 Difference]: Finished difference. Result has 525 places, 469 transitions, 4750 flow [2024-06-14 12:06:27,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4750, PETRI_PLACES=525, PETRI_TRANSITIONS=469} [2024-06-14 12:06:27,425 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-14 12:06:27,425 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 469 transitions, 4750 flow [2024-06-14 12:06:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:27,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:27,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:27,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-14 12:06:27,425 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:27,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1478407765, now seen corresponding path program 32 times [2024-06-14 12:06:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:27,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722472751] [2024-06-14 12:06:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:28,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722472751] [2024-06-14 12:06:28,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722472751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:28,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500642020] [2024-06-14 12:06:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:28,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:28,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 469 transitions, 4750 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:28,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:28,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:29,666 INFO L124 PetriNetUnfolderBase]: 1341/2524 cut-off events. [2024-06-14 12:06:29,667 INFO L125 PetriNetUnfolderBase]: For 851490/851490 co-relation queries the response was YES. [2024-06-14 12:06:29,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20851 conditions, 2524 events. 1341/2524 cut-off events. For 851490/851490 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 16364 event pairs, 199 based on Foata normal form. 8/2531 useless extension candidates. Maximal degree in co-relation 20634. Up to 1528 conditions per place. [2024-06-14 12:06:29,707 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 318 selfloop transitions, 170 changer transitions 7/497 dead transitions. [2024-06-14 12:06:29,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 497 transitions, 6280 flow [2024-06-14 12:06:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-14 12:06:29,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-14 12:06:29,708 INFO L175 Difference]: Start difference. First operand has 525 places, 469 transitions, 4750 flow. Second operand 13 states and 167 transitions. [2024-06-14 12:06:29,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 497 transitions, 6280 flow [2024-06-14 12:06:33,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 497 transitions, 5949 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 12:06:33,187 INFO L231 Difference]: Finished difference. Result has 528 places, 467 transitions, 4745 flow [2024-06-14 12:06:33,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4745, PETRI_PLACES=528, PETRI_TRANSITIONS=467} [2024-06-14 12:06:33,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-14 12:06:33,188 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 467 transitions, 4745 flow [2024-06-14 12:06:33,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:33,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:33,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-14 12:06:33,188 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:33,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1242293945, now seen corresponding path program 33 times [2024-06-14 12:06:33,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:33,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275855780] [2024-06-14 12:06:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275855780] [2024-06-14 12:06:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275855780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:34,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554125081] [2024-06-14 12:06:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:34,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:34,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 467 transitions, 4745 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:34,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:34,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:34,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:35,523 INFO L124 PetriNetUnfolderBase]: 1354/2547 cut-off events. [2024-06-14 12:06:35,523 INFO L125 PetriNetUnfolderBase]: For 892115/892115 co-relation queries the response was YES. [2024-06-14 12:06:35,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21052 conditions, 2547 events. 1354/2547 cut-off events. For 892115/892115 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 16535 event pairs, 365 based on Foata normal form. 10/2556 useless extension candidates. Maximal degree in co-relation 20834. Up to 1930 conditions per place. [2024-06-14 12:06:35,564 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 405 selfloop transitions, 109 changer transitions 11/527 dead transitions. [2024-06-14 12:06:35,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 527 transitions, 6137 flow [2024-06-14 12:06:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:06:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:06:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2024-06-14 12:06:35,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37445887445887444 [2024-06-14 12:06:35,565 INFO L175 Difference]: Start difference. First operand has 528 places, 467 transitions, 4745 flow. Second operand 14 states and 173 transitions. [2024-06-14 12:06:35,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 527 transitions, 6137 flow [2024-06-14 12:06:38,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 527 transitions, 5775 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:06:38,791 INFO L231 Difference]: Finished difference. Result has 532 places, 479 transitions, 4742 flow [2024-06-14 12:06:38,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4742, PETRI_PLACES=532, PETRI_TRANSITIONS=479} [2024-06-14 12:06:38,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-14 12:06:38,791 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 479 transitions, 4742 flow [2024-06-14 12:06:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:38,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:38,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-14 12:06:38,792 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:38,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1248960619, now seen corresponding path program 14 times [2024-06-14 12:06:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309436179] [2024-06-14 12:06:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:40,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:40,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309436179] [2024-06-14 12:06:40,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309436179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:40,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:40,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:40,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057479554] [2024-06-14 12:06:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:40,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:40,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:40,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:40,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 479 transitions, 4742 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:40,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:40,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:40,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:41,474 INFO L124 PetriNetUnfolderBase]: 1346/2527 cut-off events. [2024-06-14 12:06:41,474 INFO L125 PetriNetUnfolderBase]: For 774150/774150 co-relation queries the response was YES. [2024-06-14 12:06:41,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20916 conditions, 2527 events. 1346/2527 cut-off events. For 774150/774150 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16394 event pairs, 209 based on Foata normal form. 2/2528 useless extension candidates. Maximal degree in co-relation 20695. Up to 1677 conditions per place. [2024-06-14 12:06:41,519 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 162 changer transitions 0/502 dead transitions. [2024-06-14 12:06:41,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 502 transitions, 5885 flow [2024-06-14 12:06:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:06:41,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:06:41,520 INFO L175 Difference]: Start difference. First operand has 532 places, 479 transitions, 4742 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:06:41,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 502 transitions, 5885 flow [2024-06-14 12:06:44,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 502 transitions, 5736 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:06:44,692 INFO L231 Difference]: Finished difference. Result has 535 places, 484 transitions, 5017 flow [2024-06-14 12:06:44,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5017, PETRI_PLACES=535, PETRI_TRANSITIONS=484} [2024-06-14 12:06:44,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-14 12:06:44,693 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 484 transitions, 5017 flow [2024-06-14 12:06:44,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:44,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:44,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:44,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-14 12:06:44,693 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:44,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash -575941901, now seen corresponding path program 15 times [2024-06-14 12:06:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:44,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433118279] [2024-06-14 12:06:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433118279] [2024-06-14 12:06:45,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433118279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:45,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:45,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:45,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587940803] [2024-06-14 12:06:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:45,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:45,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:45,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 484 transitions, 5017 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:45,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:45,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:45,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:46,738 INFO L124 PetriNetUnfolderBase]: 1350/2535 cut-off events. [2024-06-14 12:06:46,738 INFO L125 PetriNetUnfolderBase]: For 775302/775302 co-relation queries the response was YES. [2024-06-14 12:06:46,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 2535 events. 1350/2535 cut-off events. For 775302/775302 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 16467 event pairs, 213 based on Foata normal form. 2/2536 useless extension candidates. Maximal degree in co-relation 20960. Up to 1685 conditions per place. [2024-06-14 12:06:46,783 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 349 selfloop transitions, 153 changer transitions 0/504 dead transitions. [2024-06-14 12:06:46,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 504 transitions, 6107 flow [2024-06-14 12:06:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:06:46,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:06:46,784 INFO L175 Difference]: Start difference. First operand has 535 places, 484 transitions, 5017 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:06:46,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 504 transitions, 6107 flow [2024-06-14 12:06:50,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 504 transitions, 5778 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:06:50,503 INFO L231 Difference]: Finished difference. Result has 539 places, 485 transitions, 5033 flow [2024-06-14 12:06:50,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5033, PETRI_PLACES=539, PETRI_TRANSITIONS=485} [2024-06-14 12:06:50,503 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-14 12:06:50,503 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 485 transitions, 5033 flow [2024-06-14 12:06:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:50,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:50,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:50,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-14 12:06:50,504 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:50,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1305191991, now seen corresponding path program 34 times [2024-06-14 12:06:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634799743] [2024-06-14 12:06:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:51,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:51,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634799743] [2024-06-14 12:06:51,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634799743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:51,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006288225] [2024-06-14 12:06:51,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:51,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:51,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:51,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:51,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:51,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 485 transitions, 5033 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:51,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:51,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:51,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:52,798 INFO L124 PetriNetUnfolderBase]: 1393/2616 cut-off events. [2024-06-14 12:06:52,798 INFO L125 PetriNetUnfolderBase]: For 903278/903278 co-relation queries the response was YES. [2024-06-14 12:06:52,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21591 conditions, 2616 events. 1393/2616 cut-off events. For 903278/903278 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 17055 event pairs, 388 based on Foata normal form. 10/2625 useless extension candidates. Maximal degree in co-relation 21370. Up to 1983 conditions per place. [2024-06-14 12:06:52,840 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 418 selfloop transitions, 110 changer transitions 11/541 dead transitions. [2024-06-14 12:06:52,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 541 transitions, 6422 flow [2024-06-14 12:06:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:06:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:06:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-14 12:06:52,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-14 12:06:52,841 INFO L175 Difference]: Start difference. First operand has 539 places, 485 transitions, 5033 flow. Second operand 14 states and 177 transitions. [2024-06-14 12:06:52,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 541 transitions, 6422 flow [2024-06-14 12:06:56,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 541 transitions, 6081 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 12:06:56,445 INFO L231 Difference]: Finished difference. Result has 546 places, 495 transitions, 5019 flow [2024-06-14 12:06:56,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4700, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5019, PETRI_PLACES=546, PETRI_TRANSITIONS=495} [2024-06-14 12:06:56,446 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-14 12:06:56,446 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 495 transitions, 5019 flow [2024-06-14 12:06:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:56,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:56,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:56,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-14 12:06:56,446 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:56,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1478412415, now seen corresponding path program 35 times [2024-06-14 12:06:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496470869] [2024-06-14 12:06:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496470869] [2024-06-14 12:06:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496470869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 12:06:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361583313] [2024-06-14 12:06:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:57,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 12:06:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 12:06:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-14 12:06:57,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-14 12:06:57,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 495 transitions, 5019 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:57,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:57,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-14 12:06:57,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:58,586 INFO L124 PetriNetUnfolderBase]: 1356/2545 cut-off events. [2024-06-14 12:06:58,587 INFO L125 PetriNetUnfolderBase]: For 761316/761316 co-relation queries the response was YES. [2024-06-14 12:06:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19384 conditions, 2545 events. 1356/2545 cut-off events. For 761316/761316 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 16536 event pairs, 184 based on Foata normal form. 10/2554 useless extension candidates. Maximal degree in co-relation 19159. Up to 1602 conditions per place. [2024-06-14 12:06:58,628 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 323 selfloop transitions, 176 changer transitions 17/518 dead transitions. [2024-06-14 12:06:58,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 518 transitions, 6193 flow [2024-06-14 12:06:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-14 12:06:58,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-14 12:06:58,629 INFO L175 Difference]: Start difference. First operand has 546 places, 495 transitions, 5019 flow. Second operand 13 states and 161 transitions. [2024-06-14 12:06:58,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 518 transitions, 6193 flow Killed by 15