./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.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-7724a2d-m [2024-06-27 19:53:33,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:53:33,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:53:33,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:53:33,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:53:33,562 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:53:33,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:53:33,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:53:33,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:53:33,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:53:33,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:53:33,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:53:33,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:53:33,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:53:33,568 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:53:33,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:53:33,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:53:33,569 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:53:33,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:53:33,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:53:33,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:53:33,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:53:33,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:53:33,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:53:33,571 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:53:33,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:53:33,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:53:33,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:53:33,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:53:33,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:53:33,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:53:33,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:53:33,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:53:33,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:53:33,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:53:33,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:53:33,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:53:33,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:53:33,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:53:33,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:53:33,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:53:33,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:53:33,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:53:33,815 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:53:33,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 19:53:34,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:53:35,116 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:53:35,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 19:53:35,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a1382d4/acbda0965d7e41e7ba339505b6ca321a/FLAGacb71af7b [2024-06-27 19:53:35,137 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a1382d4/acbda0965d7e41e7ba339505b6ca321a [2024-06-27 19:53:35,139 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:53:35,139 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:53:35,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml [2024-06-27 19:53:35,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:53:35,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:53:35,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:53:35,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:53:35,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:53:35,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:53:35" (1/2) ... [2024-06-27 19:53:35,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2b2c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:53:35, skipping insertion in model container [2024-06-27 19:53:35,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:53:35" (1/2) ... [2024-06-27 19:53:35,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b895ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:53:35, skipping insertion in model container [2024-06-27 19:53:35,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:35" (2/2) ... [2024-06-27 19:53:35,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2b2c8d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35, skipping insertion in model container [2024-06-27 19:53:35,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:35" (2/2) ... [2024-06-27 19:53:35,244 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:53:35,312 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:53:35,313 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:53:35,313 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:53:35,314 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:53:35,314 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 19:53:35,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:53:35,660 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:53:35,668 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:53:35,774 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:53:35,816 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:53:35,817 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35 WrapperNode [2024-06-27 19:53:35,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:53:35,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:53:35,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:53:35,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:53:35,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,855 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-27 19:53:35,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:53:35,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:53:35,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:53:35,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:53:35,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,878 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]. [2024-06-27 19:53:35,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:53:35,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:53:35,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:53:35,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:53:35,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (1/1) ... [2024-06-27 19:53:35,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:53:35,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:53:35,941 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) [2024-06-27 19:53:35,959 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 [2024-06-27 19:53:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:53:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:53:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:53:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:53:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:53:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:53:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:53:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:53:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:53:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:53:35,989 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:53:36,137 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:53:36,139 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:53:36,436 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:53:36,436 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:53:36,601 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:53:36,602 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:53:36,602 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:53:36 BoogieIcfgContainer [2024-06-27 19:53:36,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:53:36,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:53:36,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:53:36,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:53:36,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:53:35" (1/4) ... [2024-06-27 19:53:36,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3fbf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:53:36, skipping insertion in model container [2024-06-27 19:53:36,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:53:35" (2/4) ... [2024-06-27 19:53:36,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3fbf37 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:53:36, skipping insertion in model container [2024-06-27 19:53:36,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:53:35" (3/4) ... [2024-06-27 19:53:36,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3fbf37 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:53:36, skipping insertion in model container [2024-06-27 19:53:36,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:53:36" (4/4) ... [2024-06-27 19:53:36,608 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-27 19:53:36,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:53:36,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:53:36,633 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:53:36,665 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:53:36,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:53:36,704 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 19:53:36,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:53:36,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 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. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:53:36,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:53:36,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 19:53:36,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:53:36,719 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;@6c398a99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:53:36,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:53:36,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:53:36,721 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 19:53:36,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:53:36,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:36,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:53:36,722 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)] === [2024-06-27 19:53:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-27 19:53:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544595126] [2024-06-27 19:53:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:37,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544595126] [2024-06-27 19:53:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544595126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:37,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:37,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:53:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801568829] [2024-06-27 19:53:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:37,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:53:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:53:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:53:37,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 19:53:37,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:37,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:37,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 19:53:37,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:37,855 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-27 19:53:37,855 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 19:53:37,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-27 19:53:37,860 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 19:53:37,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-27 19:53:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:53:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:53:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-27 19:53:37,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 19:53:37,869 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-27 19:53:37,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-27 19:53:37,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:37,872 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 19:53:37,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-27 19:53:37,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 19:53:37,876 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 19:53:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:37,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:37,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:53:37,877 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)] === [2024-06-27 19:53:37,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-27 19:53:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768559102] [2024-06-27 19:53:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768559102] [2024-06-27 19:53:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768559102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:38,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:38,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:53:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185544581] [2024-06-27 19:53:38,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:38,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:53:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:53:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:53:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 19:53:38,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:38,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 19:53:38,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:38,428 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-27 19:53:38,428 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-27 19:53:38,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-27 19:53:38,430 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 19:53:38,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-27 19:53:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:53:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:53:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-27 19:53:38,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-27 19:53:38,432 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-27 19:53:38,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-27 19:53:38,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:53:38,434 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 19:53:38,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 19:53:38,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 19:53:38,434 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 19:53:38,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:38,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:38,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:53:38,435 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)] === [2024-06-27 19:53:38,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:38,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-27 19:53:38,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:38,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730371741] [2024-06-27 19:53:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:38,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730371741] [2024-06-27 19:53:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730371741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:38,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:38,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:53:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165908190] [2024-06-27 19:53:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:53:38,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:38,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:53:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:53:38,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:38,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:38,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:38,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:38,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:39,073 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-27 19:53:39,073 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-27 19:53:39,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-27 19:53:39,076 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 19:53:39,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-27 19:53:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:53:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:53:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 19:53:39,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 19:53:39,078 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-27 19:53:39,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-27 19:53:39,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:53:39,080 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-27 19:53:39,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 19:53:39,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 19:53:39,081 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-27 19:53:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:39,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:39,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:53:39,082 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)] === [2024-06-27 19:53:39,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:39,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-27 19:53:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880939627] [2024-06-27 19:53:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880939627] [2024-06-27 19:53:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880939627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:39,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:39,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:53:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683966643] [2024-06-27 19:53:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:53:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:53:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:53:39,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:39,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:39,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:39,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:39,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:39,762 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-27 19:53:39,763 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-27 19:53:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 387 events. 213/387 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 57 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-27 19:53:39,765 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-27 19:53:39,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-27 19:53:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 19:53:39,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-27 19:53:39,767 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 101 transitions. [2024-06-27 19:53:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-27 19:53:39,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:39,769 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-27 19:53:39,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-27 19:53:39,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 19:53:39,770 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-27 19:53:39,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:39,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:39,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:39,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:53:39,770 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)] === [2024-06-27 19:53:39,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-27 19:53:39,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:39,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31239761] [2024-06-27 19:53:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31239761] [2024-06-27 19:53:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31239761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:40,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:40,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:53:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721740208] [2024-06-27 19:53:40,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:53:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:53:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:53:40,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:40,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 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) [2024-06-27 19:53:40,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:40,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:40,470 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-06-27 19:53:40,471 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-27 19:53:40,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 333 events. 165/333 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1320 event pairs, 61 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-27 19:53:40,472 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-27 19:53:40,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 229 flow [2024-06-27 19:53:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:53:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:53:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-27 19:53:40,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-27 19:53:40,474 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 74 transitions. [2024-06-27 19:53:40,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 229 flow [2024-06-27 19:53:40,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 208 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:40,476 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-27 19:53:40,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 19:53:40,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 19:53:40,477 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-27 19:53:40,477 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) [2024-06-27 19:53:40,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:40,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:40,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:53:40,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:53:40,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-27 19:53:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230485832] [2024-06-27 19:53:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230485832] [2024-06-27 19:53:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230485832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:41,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:41,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989567692] [2024-06-27 19:53:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:41,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:41,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:41,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:41,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:41,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:41,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:41,465 INFO L124 PetriNetUnfolderBase]: 161/327 cut-off events. [2024-06-27 19:53:41,465 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-27 19:53:41,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 327 events. 161/327 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1279 event pairs, 59 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 964. Up to 279 conditions per place. [2024-06-27 19:53:41,467 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 19:53:41,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 249 flow [2024-06-27 19:53:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-27 19:53:41,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 19:53:41,468 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 6 states and 87 transitions. [2024-06-27 19:53:41,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 249 flow [2024-06-27 19:53:41,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 238 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:41,470 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 173 flow [2024-06-27 19:53:41,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-27 19:53:41,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-27 19:53:41,471 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 173 flow [2024-06-27 19:53:41,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:41,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:41,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:41,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:53:41,472 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)] === [2024-06-27 19:53:41,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash 459579635, now seen corresponding path program 1 times [2024-06-27 19:53:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335182446] [2024-06-27 19:53:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335182446] [2024-06-27 19:53:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335182446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405107289] [2024-06-27 19:53:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:42,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:42,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:42,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:42,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:42,197 INFO L124 PetriNetUnfolderBase]: 192/364 cut-off events. [2024-06-27 19:53:42,198 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-06-27 19:53:42,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 364 events. 192/364 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1388 event pairs, 70 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1178. Up to 328 conditions per place. [2024-06-27 19:53:42,200 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-27 19:53:42,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 287 flow [2024-06-27 19:53:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 19:53:42,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:53:42,201 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 173 flow. Second operand 6 states and 84 transitions. [2024-06-27 19:53:42,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 287 flow [2024-06-27 19:53:42,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:42,203 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 189 flow [2024-06-27 19:53:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-27 19:53:42,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-27 19:53:42,204 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 189 flow [2024-06-27 19:53:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:42,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:53:42,205 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)] === [2024-06-27 19:53:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-27 19:53:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17996457] [2024-06-27 19:53:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17996457] [2024-06-27 19:53:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17996457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:53:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573366000] [2024-06-27 19:53:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:53:42,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:53:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:53:42,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:42,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:42,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:42,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:42,894 INFO L124 PetriNetUnfolderBase]: 190/362 cut-off events. [2024-06-27 19:53:42,895 INFO L125 PetriNetUnfolderBase]: For 1154/1160 co-relation queries the response was YES. [2024-06-27 19:53:42,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 362 events. 190/362 cut-off events. For 1154/1160 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1391 event pairs, 74 based on Foata normal form. 5/364 useless extension candidates. Maximal degree in co-relation 1231. Up to 319 conditions per place. [2024-06-27 19:53:42,897 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-27 19:53:42,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 297 flow [2024-06-27 19:53:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:53:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:53:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 19:53:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-27 19:53:42,898 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 189 flow. Second operand 6 states and 83 transitions. [2024-06-27 19:53:42,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 297 flow [2024-06-27 19:53:42,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:42,900 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 215 flow [2024-06-27 19:53:42,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 19:53:42,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 19:53:42,901 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 215 flow [2024-06-27 19:53:42,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:42,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:53:42,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:53:42,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash 501071554, now seen corresponding path program 1 times [2024-06-27 19:53:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:42,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900923887] [2024-06-27 19:53:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:42,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:43,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900923887] [2024-06-27 19:53:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900923887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:43,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:43,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377520102] [2024-06-27 19:53:43,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:43,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:43,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:43,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:43,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 19:53:43,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 215 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-27 19:53:43,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:43,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 19:53:43,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:43,904 INFO L124 PetriNetUnfolderBase]: 202/369 cut-off events. [2024-06-27 19:53:43,905 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2024-06-27 19:53:43,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 369 events. 202/369 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1334 event pairs, 30 based on Foata normal form. 4/371 useless extension candidates. Maximal degree in co-relation 1313. Up to 302 conditions per place. [2024-06-27 19:53:43,907 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-27 19:53:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 383 flow [2024-06-27 19:53:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-27 19:53:43,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-27 19:53:43,908 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 215 flow. Second operand 8 states and 125 transitions. [2024-06-27 19:53:43,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 383 flow [2024-06-27 19:53:43,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:43,910 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 217 flow [2024-06-27 19:53:43,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-27 19:53:43,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-27 19:53:43,911 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 217 flow [2024-06-27 19:53:43,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-27 19:53:43,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:43,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:43,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:53:43,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:53:43,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1361888085, now seen corresponding path program 1 times [2024-06-27 19:53:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:43,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609359641] [2024-06-27 19:53:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609359641] [2024-06-27 19:53:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609359641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:44,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211527075] [2024-06-27 19:53:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:44,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:44,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:44,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:44,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:44,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:44,674 INFO L124 PetriNetUnfolderBase]: 205/374 cut-off events. [2024-06-27 19:53:44,675 INFO L125 PetriNetUnfolderBase]: For 1707/1707 co-relation queries the response was YES. [2024-06-27 19:53:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 374 events. 205/374 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1356 event pairs, 47 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1409. Up to 340 conditions per place. [2024-06-27 19:53:44,676 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-27 19:53:44,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 367 flow [2024-06-27 19:53:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 19:53:44,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:53:44,678 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 217 flow. Second operand 7 states and 91 transitions. [2024-06-27 19:53:44,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 367 flow [2024-06-27 19:53:44,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 339 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:44,680 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 230 flow [2024-06-27 19:53:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-27 19:53:44,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 19:53:44,681 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 230 flow [2024-06-27 19:53:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:44,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:44,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:44,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:53:44,682 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)] === [2024-06-27 19:53:44,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067575, now seen corresponding path program 2 times [2024-06-27 19:53:44,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:44,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865707969] [2024-06-27 19:53:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:44,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865707969] [2024-06-27 19:53:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865707969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:45,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:45,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217662161] [2024-06-27 19:53:45,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:45,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:45,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:45,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:45,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:45,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:45,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:45,506 INFO L124 PetriNetUnfolderBase]: 208/379 cut-off events. [2024-06-27 19:53:45,506 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-27 19:53:45,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 379 events. 208/379 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1390 event pairs, 47 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1485. Up to 339 conditions per place. [2024-06-27 19:53:45,508 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-27 19:53:45,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 374 flow [2024-06-27 19:53:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 19:53:45,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 19:53:45,510 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 230 flow. Second operand 7 states and 90 transitions. [2024-06-27 19:53:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 374 flow [2024-06-27 19:53:45,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 349 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:45,512 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 256 flow [2024-06-27 19:53:45,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-27 19:53:45,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-27 19:53:45,513 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 256 flow [2024-06-27 19:53:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:45,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:45,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:45,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:53:45,514 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)] === [2024-06-27 19:53:45,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438941, now seen corresponding path program 1 times [2024-06-27 19:53:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575954659] [2024-06-27 19:53:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575954659] [2024-06-27 19:53:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575954659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572944478] [2024-06-27 19:53:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:46,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:46,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:46,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 256 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) [2024-06-27 19:53:46,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:46,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:46,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:46,524 INFO L124 PetriNetUnfolderBase]: 197/370 cut-off events. [2024-06-27 19:53:46,524 INFO L125 PetriNetUnfolderBase]: For 2505/2505 co-relation queries the response was YES. [2024-06-27 19:53:46,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 370 events. 197/370 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1401 event pairs, 46 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1495. Up to 325 conditions per place. [2024-06-27 19:53:46,526 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-27 19:53:46,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 390 flow [2024-06-27 19:53:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-27 19:53:46,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-27 19:53:46,528 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 256 flow. Second operand 7 states and 94 transitions. [2024-06-27 19:53:46,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 390 flow [2024-06-27 19:53:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 355 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:46,530 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 260 flow [2024-06-27 19:53:46,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 19:53:46,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-27 19:53:46,531 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 260 flow [2024-06-27 19:53:46,531 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) [2024-06-27 19:53:46,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:46,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:53:46,532 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)] === [2024-06-27 19:53:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash 137702471, now seen corresponding path program 3 times [2024-06-27 19:53:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254765685] [2024-06-27 19:53:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254765685] [2024-06-27 19:53:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254765685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:47,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:47,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300110725] [2024-06-27 19:53:47,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:47,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:47,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:47,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:47,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:47,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:47,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:47,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:47,397 INFO L124 PetriNetUnfolderBase]: 209/382 cut-off events. [2024-06-27 19:53:47,397 INFO L125 PetriNetUnfolderBase]: For 2900/2903 co-relation queries the response was YES. [2024-06-27 19:53:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 382 events. 209/382 cut-off events. For 2900/2903 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1405 event pairs, 54 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1607. Up to 332 conditions per place. [2024-06-27 19:53:47,399 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-27 19:53:47,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 402 flow [2024-06-27 19:53:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:53:47,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-27 19:53:47,400 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 260 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:53:47,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 402 flow [2024-06-27 19:53:47,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 379 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:47,404 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 300 flow [2024-06-27 19:53:47,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-27 19:53:47,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-27 19:53:47,405 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 300 flow [2024-06-27 19:53:47,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-27 19:53:47,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:47,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:53:47,406 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)] === [2024-06-27 19:53:47,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-27 19:53:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086655901] [2024-06-27 19:53:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086655901] [2024-06-27 19:53:48,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086655901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:48,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:48,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015696003] [2024-06-27 19:53:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:48,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:48,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 300 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) [2024-06-27 19:53:48,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:48,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:48,656 INFO L124 PetriNetUnfolderBase]: 198/373 cut-off events. [2024-06-27 19:53:48,656 INFO L125 PetriNetUnfolderBase]: For 3290/3293 co-relation queries the response was YES. [2024-06-27 19:53:48,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 373 events. 198/373 cut-off events. For 3290/3293 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 50 based on Foata normal form. 3/373 useless extension candidates. Maximal degree in co-relation 1615. Up to 322 conditions per place. [2024-06-27 19:53:48,659 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-27 19:53:48,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 430 flow [2024-06-27 19:53:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 19:53:48,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-27 19:53:48,660 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 300 flow. Second operand 7 states and 93 transitions. [2024-06-27 19:53:48,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 430 flow [2024-06-27 19:53:48,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 383 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:48,663 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 302 flow [2024-06-27 19:53:48,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-27 19:53:48,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 19:53:48,664 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 302 flow [2024-06-27 19:53:48,665 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) [2024-06-27 19:53:48,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:48,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:48,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:53:48,665 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)] === [2024-06-27 19:53:48,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:48,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-27 19:53:48,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:48,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792231087] [2024-06-27 19:53:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:48,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792231087] [2024-06-27 19:53:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792231087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:49,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168143158] [2024-06-27 19:53:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:49,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:49,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 302 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) [2024-06-27 19:53:49,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:49,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:49,674 INFO L124 PetriNetUnfolderBase]: 196/370 cut-off events. [2024-06-27 19:53:49,674 INFO L125 PetriNetUnfolderBase]: For 3643/3646 co-relation queries the response was YES. [2024-06-27 19:53:49,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 370 events. 196/370 cut-off events. For 3643/3646 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1407 event pairs, 50 based on Foata normal form. 3/370 useless extension candidates. Maximal degree in co-relation 1641. Up to 310 conditions per place. [2024-06-27 19:53:49,677 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-27 19:53:49,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 454 flow [2024-06-27 19:53:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-27 19:53:49,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-27 19:53:49,678 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 302 flow. Second operand 7 states and 94 transitions. [2024-06-27 19:53:49,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 454 flow [2024-06-27 19:53:49,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 421 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:49,681 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 353 flow [2024-06-27 19:53:49,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-27 19:53:49,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-27 19:53:49,682 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 353 flow [2024-06-27 19:53:49,683 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) [2024-06-27 19:53:49,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:49,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:49,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:53:49,683 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)] === [2024-06-27 19:53:49,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1217805020, now seen corresponding path program 1 times [2024-06-27 19:53:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448993355] [2024-06-27 19:53:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448993355] [2024-06-27 19:53:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448993355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:50,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189977305] [2024-06-27 19:53:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:50,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:50,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:50,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 353 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:50,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:50,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:50,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:50,620 INFO L124 PetriNetUnfolderBase]: 236/433 cut-off events. [2024-06-27 19:53:50,621 INFO L125 PetriNetUnfolderBase]: For 4556/4556 co-relation queries the response was YES. [2024-06-27 19:53:50,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 433 events. 236/433 cut-off events. For 4556/4556 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1661 event pairs, 46 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 1998. Up to 363 conditions per place. [2024-06-27 19:53:50,623 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-27 19:53:50,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 637 flow [2024-06-27 19:53:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 19:53:50,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-27 19:53:50,624 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 353 flow. Second operand 9 states and 116 transitions. [2024-06-27 19:53:50,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 637 flow [2024-06-27 19:53:50,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 607 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:50,628 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 468 flow [2024-06-27 19:53:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-27 19:53:50,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 19:53:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 468 flow [2024-06-27 19:53:50,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:50,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:50,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:53:50,629 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)] === [2024-06-27 19:53:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1218721180, now seen corresponding path program 2 times [2024-06-27 19:53:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676547116] [2024-06-27 19:53:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676547116] [2024-06-27 19:53:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676547116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:51,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758718639] [2024-06-27 19:53:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:51,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:51,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:51,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:51,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:51,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:51,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:51,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:51,546 INFO L124 PetriNetUnfolderBase]: 242/444 cut-off events. [2024-06-27 19:53:51,546 INFO L125 PetriNetUnfolderBase]: For 5293/5293 co-relation queries the response was YES. [2024-06-27 19:53:51,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 444 events. 242/444 cut-off events. For 5293/5293 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1726 event pairs, 45 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2201. Up to 365 conditions per place. [2024-06-27 19:53:51,549 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/86 dead transitions. [2024-06-27 19:53:51,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 710 flow [2024-06-27 19:53:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 19:53:51,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 19:53:51,551 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 468 flow. Second operand 8 states and 105 transitions. [2024-06-27 19:53:51,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 710 flow [2024-06-27 19:53:51,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 677 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 19:53:51,556 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 516 flow [2024-06-27 19:53:51,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-27 19:53:51,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-27 19:53:51,556 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 516 flow [2024-06-27 19:53:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:51,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:51,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:51,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:53:51,557 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)] === [2024-06-27 19:53:51,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571450, now seen corresponding path program 3 times [2024-06-27 19:53:51,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:51,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795278123] [2024-06-27 19:53:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795278123] [2024-06-27 19:53:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795278123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024448906] [2024-06-27 19:53:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:52,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:52,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 516 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:52,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:52,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:52,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:52,517 INFO L124 PetriNetUnfolderBase]: 248/457 cut-off events. [2024-06-27 19:53:52,517 INFO L125 PetriNetUnfolderBase]: For 6088/6088 co-relation queries the response was YES. [2024-06-27 19:53:52,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 457 events. 248/457 cut-off events. For 6088/6088 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1811 event pairs, 48 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2347. Up to 362 conditions per place. [2024-06-27 19:53:52,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-06-27 19:53:52,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 754 flow [2024-06-27 19:53:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 19:53:52,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 19:53:52,522 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 516 flow. Second operand 8 states and 105 transitions. [2024-06-27 19:53:52,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 754 flow [2024-06-27 19:53:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 691 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:52,527 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 538 flow [2024-06-27 19:53:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-27 19:53:52,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-27 19:53:52,528 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 538 flow [2024-06-27 19:53:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:52,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:52,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:53:52,529 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)] === [2024-06-27 19:53:52,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571233, now seen corresponding path program 1 times [2024-06-27 19:53:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:52,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570221924] [2024-06-27 19:53:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:52,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570221924] [2024-06-27 19:53:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570221924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:53,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:53,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978271329] [2024-06-27 19:53:53,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:53,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:53,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:53,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:53,431 INFO L124 PetriNetUnfolderBase]: 251/461 cut-off events. [2024-06-27 19:53:53,431 INFO L125 PetriNetUnfolderBase]: For 5929/5929 co-relation queries the response was YES. [2024-06-27 19:53:53,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 461 events. 251/461 cut-off events. For 5929/5929 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1820 event pairs, 44 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 2349. Up to 403 conditions per place. [2024-06-27 19:53:53,434 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 17 changer transitions 0/87 dead transitions. [2024-06-27 19:53:53,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 768 flow [2024-06-27 19:53:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 19:53:53,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-27 19:53:53,436 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 538 flow. Second operand 8 states and 101 transitions. [2024-06-27 19:53:53,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 768 flow [2024-06-27 19:53:53,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 703 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:53,441 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 534 flow [2024-06-27 19:53:53,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-27 19:53:53,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-27 19:53:53,442 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 534 flow [2024-06-27 19:53:53,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:53,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:53,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:53:53,443 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)] === [2024-06-27 19:53:53,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999324, now seen corresponding path program 1 times [2024-06-27 19:53:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:53,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318503274] [2024-06-27 19:53:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:54,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318503274] [2024-06-27 19:53:54,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318503274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:54,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:54,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:54,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267933300] [2024-06-27 19:53:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:54,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:54,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:54,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:53:54,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 534 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) [2024-06-27 19:53:54,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:54,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:53:54,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:54,490 INFO L124 PetriNetUnfolderBase]: 236/445 cut-off events. [2024-06-27 19:53:54,490 INFO L125 PetriNetUnfolderBase]: For 6297/6301 co-relation queries the response was YES. [2024-06-27 19:53:54,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 445 events. 236/445 cut-off events. For 6297/6301 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1815 event pairs, 43 based on Foata normal form. 5/448 useless extension candidates. Maximal degree in co-relation 2265. Up to 379 conditions per place. [2024-06-27 19:53:54,493 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-27 19:53:54,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 734 flow [2024-06-27 19:53:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 19:53:54,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 19:53:54,495 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 534 flow. Second operand 8 states and 105 transitions. [2024-06-27 19:53:54,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 734 flow [2024-06-27 19:53:54,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 689 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:54,501 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 542 flow [2024-06-27 19:53:54,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=542, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-06-27 19:53:54,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-27 19:53:54,501 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 542 flow [2024-06-27 19:53:54,501 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) [2024-06-27 19:53:54,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:54,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:53:54,502 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)] === [2024-06-27 19:53:54,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:54,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999603, now seen corresponding path program 2 times [2024-06-27 19:53:54,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:54,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177414511] [2024-06-27 19:53:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:54,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177414511] [2024-06-27 19:53:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177414511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129993372] [2024-06-27 19:53:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:55,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:55,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:55,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:55,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:55,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:55,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 542 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:55,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:55,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:55,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:55,557 INFO L124 PetriNetUnfolderBase]: 262/479 cut-off events. [2024-06-27 19:53:55,557 INFO L125 PetriNetUnfolderBase]: For 7202/7202 co-relation queries the response was YES. [2024-06-27 19:53:55,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 479 events. 262/479 cut-off events. For 7202/7202 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1920 event pairs, 45 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2526. Up to 403 conditions per place. [2024-06-27 19:53:55,561 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-06-27 19:53:55,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 834 flow [2024-06-27 19:53:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-27 19:53:55,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 19:53:55,562 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 542 flow. Second operand 8 states and 102 transitions. [2024-06-27 19:53:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 834 flow [2024-06-27 19:53:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 797 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:55,572 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 606 flow [2024-06-27 19:53:55,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-27 19:53:55,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-27 19:53:55,573 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 606 flow [2024-06-27 19:53:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:55,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:55,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:55,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:53:55,573 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)] === [2024-06-27 19:53:55,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1213007260, now seen corresponding path program 4 times [2024-06-27 19:53:55,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:55,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202403052] [2024-06-27 19:53:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:55,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202403052] [2024-06-27 19:53:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202403052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:56,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911797259] [2024-06-27 19:53:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:56,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 606 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:56,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:56,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:56,560 INFO L124 PetriNetUnfolderBase]: 268/492 cut-off events. [2024-06-27 19:53:56,561 INFO L125 PetriNetUnfolderBase]: For 8378/8378 co-relation queries the response was YES. [2024-06-27 19:53:56,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 492 events. 268/492 cut-off events. For 8378/8378 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1991 event pairs, 50 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2674. Up to 381 conditions per place. [2024-06-27 19:53:56,564 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2024-06-27 19:53:56,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 846 flow [2024-06-27 19:53:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 19:53:56,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:53:56,566 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 606 flow. Second operand 8 states and 104 transitions. [2024-06-27 19:53:56,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 846 flow [2024-06-27 19:53:56,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 805 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:53:56,573 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 656 flow [2024-06-27 19:53:56,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-06-27 19:53:56,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 19:53:56,574 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 656 flow [2024-06-27 19:53:56,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:56,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:56,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:53:56,575 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)] === [2024-06-27 19:53:56,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash -725577109, now seen corresponding path program 3 times [2024-06-27 19:53:56,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498377808] [2024-06-27 19:53:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:57,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:57,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498377808] [2024-06-27 19:53:57,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498377808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:57,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:57,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520659900] [2024-06-27 19:53:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:57,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:57,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:57,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:57,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:57,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:57,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:57,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:57,579 INFO L124 PetriNetUnfolderBase]: 266/488 cut-off events. [2024-06-27 19:53:57,579 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-06-27 19:53:57,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 488 events. 266/488 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1957 event pairs, 45 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2742. Up to 420 conditions per place. [2024-06-27 19:53:57,583 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-27 19:53:57,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 866 flow [2024-06-27 19:53:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:53:57,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:53:57,585 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 656 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:53:57,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 866 flow [2024-06-27 19:53:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 781 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:57,593 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 614 flow [2024-06-27 19:53:57,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-27 19:53:57,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-27 19:53:57,594 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 614 flow [2024-06-27 19:53:57,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:57,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:57,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:57,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:53:57,594 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)] === [2024-06-27 19:53:57,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461821, now seen corresponding path program 4 times [2024-06-27 19:53:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:57,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131205615] [2024-06-27 19:53:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:58,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131205615] [2024-06-27 19:53:58,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131205615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:58,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:58,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962048950] [2024-06-27 19:53:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:58,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:58,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:58,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:58,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:58,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:58,583 INFO L124 PetriNetUnfolderBase]: 269/494 cut-off events. [2024-06-27 19:53:58,584 INFO L125 PetriNetUnfolderBase]: For 9234/9237 co-relation queries the response was YES. [2024-06-27 19:53:58,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 494 events. 269/494 cut-off events. For 9234/9237 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1988 event pairs, 51 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2744. Up to 416 conditions per place. [2024-06-27 19:53:58,588 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 23 changer transitions 0/92 dead transitions. [2024-06-27 19:53:58,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 844 flow [2024-06-27 19:53:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 19:53:58,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-27 19:53:58,589 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 614 flow. Second operand 8 states and 99 transitions. [2024-06-27 19:53:58,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 844 flow [2024-06-27 19:53:58,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 792 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:58,598 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 643 flow [2024-06-27 19:53:58,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=643, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-06-27 19:53:58,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-27 19:53:58,598 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 643 flow [2024-06-27 19:53:58,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:58,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:58,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:58,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:53:58,599 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)] === [2024-06-27 19:53:58,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 5 times [2024-06-27 19:53:58,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468548181] [2024-06-27 19:53:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468548181] [2024-06-27 19:53:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468548181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:53:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733436776] [2024-06-27 19:53:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:53:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:53:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:53:59,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:53:59,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:59,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:59,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:53:59,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:59,563 INFO L124 PetriNetUnfolderBase]: 270/498 cut-off events. [2024-06-27 19:53:59,563 INFO L125 PetriNetUnfolderBase]: For 10146/10149 co-relation queries the response was YES. [2024-06-27 19:53:59,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 498 events. 270/498 cut-off events. For 10146/10149 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2012 event pairs, 59 based on Foata normal form. 2/495 useless extension candidates. Maximal degree in co-relation 2805. Up to 370 conditions per place. [2024-06-27 19:53:59,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-27 19:53:59,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 885 flow [2024-06-27 19:53:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:53:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:53:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 19:53:59,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-27 19:53:59,581 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 643 flow. Second operand 8 states and 103 transitions. [2024-06-27 19:53:59,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 885 flow [2024-06-27 19:53:59,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 820 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:59,592 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 683 flow [2024-06-27 19:53:59,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-06-27 19:53:59,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 19:53:59,593 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 683 flow [2024-06-27 19:53:59,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:53:59,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:59,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:53:59,594 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)] === [2024-06-27 19:53:59,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469261, now seen corresponding path program 5 times [2024-06-27 19:53:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:59,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642510015] [2024-06-27 19:53:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642510015] [2024-06-27 19:54:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642510015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:54:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693751329] [2024-06-27 19:54:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:00,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:54:00,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:54:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:54:00,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:00,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:54:00,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:00,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:00,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:00,658 INFO L124 PetriNetUnfolderBase]: 273/503 cut-off events. [2024-06-27 19:54:00,659 INFO L125 PetriNetUnfolderBase]: For 10785/10788 co-relation queries the response was YES. [2024-06-27 19:54:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 503 events. 273/503 cut-off events. For 10785/10788 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2041 event pairs, 51 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 2916. Up to 417 conditions per place. [2024-06-27 19:54:00,669 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-27 19:54:00,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 925 flow [2024-06-27 19:54:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:54:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:54:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 19:54:00,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-27 19:54:00,670 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 683 flow. Second operand 8 states and 101 transitions. [2024-06-27 19:54:00,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 925 flow [2024-06-27 19:54:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 836 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:00,682 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 685 flow [2024-06-27 19:54:00,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-06-27 19:54:00,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-27 19:54:00,682 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 685 flow [2024-06-27 19:54:00,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:54:00,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:00,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:00,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:54:00,683 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)] === [2024-06-27 19:54:00,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666310, now seen corresponding path program 2 times [2024-06-27 19:54:00,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:00,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150752786] [2024-06-27 19:54:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150752786] [2024-06-27 19:54:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150752786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:54:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827838716] [2024-06-27 19:54:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:54:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:54:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:54:01,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:01,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 685 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) [2024-06-27 19:54:01,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:01,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:01,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:01,747 INFO L124 PetriNetUnfolderBase]: 270/507 cut-off events. [2024-06-27 19:54:01,748 INFO L125 PetriNetUnfolderBase]: For 12336/12343 co-relation queries the response was YES. [2024-06-27 19:54:01,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 507 events. 270/507 cut-off events. For 12336/12343 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2144 event pairs, 44 based on Foata normal form. 8/511 useless extension candidates. Maximal degree in co-relation 2940. Up to 379 conditions per place. [2024-06-27 19:54:01,753 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 26 changer transitions 0/107 dead transitions. [2024-06-27 19:54:01,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 1073 flow [2024-06-27 19:54:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:54:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:54:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 19:54:01,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:54:01,755 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 685 flow. Second operand 8 states and 112 transitions. [2024-06-27 19:54:01,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 1073 flow [2024-06-27 19:54:01,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 998 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:01,765 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 731 flow [2024-06-27 19:54:01,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2024-06-27 19:54:01,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-27 19:54:01,766 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 731 flow [2024-06-27 19:54:01,766 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) [2024-06-27 19:54:01,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:01,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:54:01,766 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)] === [2024-06-27 19:54:01,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 3 times [2024-06-27 19:54:01,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:01,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383162069] [2024-06-27 19:54:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:02,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383162069] [2024-06-27 19:54:02,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383162069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:02,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:02,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922523948] [2024-06-27 19:54:02,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:02,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:02,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:02,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-27 19:54:02,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:02,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:02,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:02,841 INFO L124 PetriNetUnfolderBase]: 268/503 cut-off events. [2024-06-27 19:54:02,841 INFO L125 PetriNetUnfolderBase]: For 12550/12554 co-relation queries the response was YES. [2024-06-27 19:54:02,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 503 events. 268/503 cut-off events. For 12550/12554 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2115 event pairs, 49 based on Foata normal form. 5/505 useless extension candidates. Maximal degree in co-relation 2951. Up to 419 conditions per place. [2024-06-27 19:54:02,844 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-06-27 19:54:02,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 982 flow [2024-06-27 19:54:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:54:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:54:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 19:54:02,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 19:54:02,845 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 731 flow. Second operand 8 states and 106 transitions. [2024-06-27 19:54:02,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 982 flow [2024-06-27 19:54:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 951 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 19:54:02,857 INFO L231 Difference]: Finished difference. Result has 107 places, 98 transitions, 800 flow [2024-06-27 19:54:02,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2024-06-27 19:54:02,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-27 19:54:02,862 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 800 flow [2024-06-27 19:54:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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) [2024-06-27 19:54:02,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:02,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:02,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:54:02,862 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)] === [2024-06-27 19:54:02,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-27 19:54:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023805983] [2024-06-27 19:54:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:03,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023805983] [2024-06-27 19:54:03,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023805983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:03,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:54:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272824558] [2024-06-27 19:54:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:03,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:54:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:54:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:54:03,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:03,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 800 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:54:03,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:03,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:03,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:03,736 INFO L124 PetriNetUnfolderBase]: 285/523 cut-off events. [2024-06-27 19:54:03,736 INFO L125 PetriNetUnfolderBase]: For 13191/13191 co-relation queries the response was YES. [2024-06-27 19:54:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 523 events. 285/523 cut-off events. For 13191/13191 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2147 event pairs, 54 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3140. Up to 416 conditions per place. [2024-06-27 19:54:03,739 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-06-27 19:54:03,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 1068 flow [2024-06-27 19:54:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:54:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:54:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 19:54:03,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-27 19:54:03,740 INFO L175 Difference]: Start difference. First operand has 107 places, 98 transitions, 800 flow. Second operand 8 states and 101 transitions. [2024-06-27 19:54:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 1068 flow [2024-06-27 19:54:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1026 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:54:03,753 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 875 flow [2024-06-27 19:54:03,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=875, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-06-27 19:54:03,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-27 19:54:03,754 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 875 flow [2024-06-27 19:54:03,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-27 19:54:03,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:03,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:54:03,755 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)] === [2024-06-27 19:54:03,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1822992740, now seen corresponding path program 4 times [2024-06-27 19:54:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450084464] [2024-06-27 19:54:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450084464] [2024-06-27 19:54:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450084464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:54:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672963859] [2024-06-27 19:54:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:54:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:54:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:54:04,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:04,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 875 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) [2024-06-27 19:54:04,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:04,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:04,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:04,913 INFO L124 PetriNetUnfolderBase]: 262/493 cut-off events. [2024-06-27 19:54:04,913 INFO L125 PetriNetUnfolderBase]: For 13416/13420 co-relation queries the response was YES. [2024-06-27 19:54:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 493 events. 262/493 cut-off events. For 13416/13420 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2048 event pairs, 47 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 2963. Up to 419 conditions per place. [2024-06-27 19:54:04,916 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 12 changer transitions 0/109 dead transitions. [2024-06-27 19:54:04,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1091 flow [2024-06-27 19:54:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:54:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:54:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 19:54:04,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:04,917 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 875 flow. Second operand 8 states and 104 transitions. [2024-06-27 19:54:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1091 flow [2024-06-27 19:54:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 978 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:04,931 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 791 flow [2024-06-27 19:54:04,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-27 19:54:04,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-27 19:54:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 791 flow [2024-06-27 19:54:04,932 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) [2024-06-27 19:54:04,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:04,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:54:04,933 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)] === [2024-06-27 19:54:04,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-27 19:54:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626166069] [2024-06-27 19:54:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626166069] [2024-06-27 19:54:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626166069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:06,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:06,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:06,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102148616] [2024-06-27 19:54:06,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:06,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:06,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 791 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:06,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:06,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:06,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:06,760 INFO L124 PetriNetUnfolderBase]: 259/488 cut-off events. [2024-06-27 19:54:06,761 INFO L125 PetriNetUnfolderBase]: For 13350/13354 co-relation queries the response was YES. [2024-06-27 19:54:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 488 events. 259/488 cut-off events. For 13350/13354 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2015 event pairs, 46 based on Foata normal form. 6/490 useless extension candidates. Maximal degree in co-relation 2831. Up to 416 conditions per place. [2024-06-27 19:54:06,764 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-27 19:54:06,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1020 flow [2024-06-27 19:54:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:54:06,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:54:06,765 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 791 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:54:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1020 flow [2024-06-27 19:54:06,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 965 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:06,779 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 788 flow [2024-06-27 19:54:06,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-27 19:54:06,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-27 19:54:06,780 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 788 flow [2024-06-27 19:54:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:06,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:06,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:06,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:54:06,781 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)] === [2024-06-27 19:54:06,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1195311276, now seen corresponding path program 1 times [2024-06-27 19:54:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65333578] [2024-06-27 19:54:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:07,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:07,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65333578] [2024-06-27 19:54:07,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65333578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:07,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:07,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:07,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769523608] [2024-06-27 19:54:07,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:07,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:07,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:07,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:07,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:07,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:07,940 INFO L124 PetriNetUnfolderBase]: 276/508 cut-off events. [2024-06-27 19:54:07,941 INFO L125 PetriNetUnfolderBase]: For 13683/13683 co-relation queries the response was YES. [2024-06-27 19:54:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 508 events. 276/508 cut-off events. For 13683/13683 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2069 event pairs, 41 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2980. Up to 419 conditions per place. [2024-06-27 19:54:07,944 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 24 changer transitions 0/122 dead transitions. [2024-06-27 19:54:07,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 1116 flow [2024-06-27 19:54:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:07,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:07,945 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 788 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:07,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 1116 flow [2024-06-27 19:54:07,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1084 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:07,958 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 847 flow [2024-06-27 19:54:07,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-27 19:54:07,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-27 19:54:07,959 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 847 flow [2024-06-27 19:54:07,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:07,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:07,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:54:07,960 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)] === [2024-06-27 19:54:07,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1195191120, now seen corresponding path program 1 times [2024-06-27 19:54:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602997674] [2024-06-27 19:54:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602997674] [2024-06-27 19:54:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602997674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:08,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:08,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264793239] [2024-06-27 19:54:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:08,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:08,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:08,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:08,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:08,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:08,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:09,009 INFO L124 PetriNetUnfolderBase]: 282/518 cut-off events. [2024-06-27 19:54:09,009 INFO L125 PetriNetUnfolderBase]: For 15197/15197 co-relation queries the response was YES. [2024-06-27 19:54:09,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 518 events. 282/518 cut-off events. For 15197/15197 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2118 event pairs, 40 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3125. Up to 423 conditions per place. [2024-06-27 19:54:09,012 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 93 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-27 19:54:09,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 123 transitions, 1171 flow [2024-06-27 19:54:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 19:54:09,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-27 19:54:09,013 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 847 flow. Second operand 9 states and 116 transitions. [2024-06-27 19:54:09,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 123 transitions, 1171 flow [2024-06-27 19:54:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 1096 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:09,029 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 875 flow [2024-06-27 19:54:09,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-06-27 19:54:09,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-27 19:54:09,029 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 875 flow [2024-06-27 19:54:09,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:09,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:09,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:09,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:54:09,030 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)] === [2024-06-27 19:54:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -179716258, now seen corresponding path program 2 times [2024-06-27 19:54:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:09,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394615718] [2024-06-27 19:54:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394615718] [2024-06-27 19:54:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394615718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:09,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487035363] [2024-06-27 19:54:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:09,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:09,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:09,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:09,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:10,107 INFO L124 PetriNetUnfolderBase]: 295/540 cut-off events. [2024-06-27 19:54:10,107 INFO L125 PetriNetUnfolderBase]: For 17171/17171 co-relation queries the response was YES. [2024-06-27 19:54:10,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 540 events. 295/540 cut-off events. For 17171/17171 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2237 event pairs, 43 based on Foata normal form. 1/539 useless extension candidates. Maximal degree in co-relation 3405. Up to 417 conditions per place. [2024-06-27 19:54:10,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 35 changer transitions 0/126 dead transitions. [2024-06-27 19:54:10,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 1291 flow [2024-06-27 19:54:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:10,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:10,112 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 875 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:10,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 1291 flow [2024-06-27 19:54:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 126 transitions, 1212 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:10,131 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 959 flow [2024-06-27 19:54:10,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-27 19:54:10,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 19:54:10,132 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 959 flow [2024-06-27 19:54:10,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:10,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:10,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:10,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:54:10,132 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)] === [2024-06-27 19:54:10,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash 878998498, now seen corresponding path program 1 times [2024-06-27 19:54:10,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:10,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880436044] [2024-06-27 19:54:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880436044] [2024-06-27 19:54:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880436044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:10,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:10,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573238453] [2024-06-27 19:54:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:10,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:10,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:10,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:10,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:10,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:11,120 INFO L124 PetriNetUnfolderBase]: 298/544 cut-off events. [2024-06-27 19:54:11,120 INFO L125 PetriNetUnfolderBase]: For 18604/18604 co-relation queries the response was YES. [2024-06-27 19:54:11,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 544 events. 298/544 cut-off events. For 18604/18604 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2247 event pairs, 39 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3553. Up to 479 conditions per place. [2024-06-27 19:54:11,123 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-27 19:54:11,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 1273 flow [2024-06-27 19:54:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 19:54:11,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:54:11,124 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 959 flow. Second operand 9 states and 111 transitions. [2024-06-27 19:54:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 1273 flow [2024-06-27 19:54:11,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 127 transitions, 1211 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:11,142 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 974 flow [2024-06-27 19:54:11,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=974, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-06-27 19:54:11,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-27 19:54:11,143 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 974 flow [2024-06-27 19:54:11,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:11,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:11,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:54:11,144 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)] === [2024-06-27 19:54:11,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 878991740, now seen corresponding path program 3 times [2024-06-27 19:54:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636161278] [2024-06-27 19:54:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636161278] [2024-06-27 19:54:11,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636161278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:11,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887523307] [2024-06-27 19:54:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:11,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:11,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:11,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 974 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:11,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:11,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:12,072 INFO L124 PetriNetUnfolderBase]: 294/539 cut-off events. [2024-06-27 19:54:12,072 INFO L125 PetriNetUnfolderBase]: For 18875/18875 co-relation queries the response was YES. [2024-06-27 19:54:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 539 events. 294/539 cut-off events. For 18875/18875 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2233 event pairs, 42 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 3500. Up to 434 conditions per place. [2024-06-27 19:54:12,076 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-27 19:54:12,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 1274 flow [2024-06-27 19:54:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 19:54:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-27 19:54:12,078 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 974 flow. Second operand 9 states and 116 transitions. [2024-06-27 19:54:12,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 1274 flow [2024-06-27 19:54:12,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1191 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:12,101 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 955 flow [2024-06-27 19:54:12,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=955, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-06-27 19:54:12,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-27 19:54:12,101 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 955 flow [2024-06-27 19:54:12,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:12,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:12,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:54:12,102 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)] === [2024-06-27 19:54:12,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:12,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1017822450, now seen corresponding path program 4 times [2024-06-27 19:54:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492675915] [2024-06-27 19:54:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:12,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492675915] [2024-06-27 19:54:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492675915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690998494] [2024-06-27 19:54:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:12,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:13,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:13,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 955 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:13,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:13,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:13,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:13,218 INFO L124 PetriNetUnfolderBase]: 307/560 cut-off events. [2024-06-27 19:54:13,218 INFO L125 PetriNetUnfolderBase]: For 20799/20799 co-relation queries the response was YES. [2024-06-27 19:54:13,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 560 events. 307/560 cut-off events. For 20799/20799 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2333 event pairs, 46 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 3743. Up to 403 conditions per place. [2024-06-27 19:54:13,222 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 45 changer transitions 0/131 dead transitions. [2024-06-27 19:54:13,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 1399 flow [2024-06-27 19:54:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:13,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:13,241 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 955 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:13,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 1399 flow [2024-06-27 19:54:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 131 transitions, 1323 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:13,264 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 1086 flow [2024-06-27 19:54:13,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-06-27 19:54:13,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-27 19:54:13,265 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 1086 flow [2024-06-27 19:54:13,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:13,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:13,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:54:13,265 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)] === [2024-06-27 19:54:13,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash -265399390, now seen corresponding path program 2 times [2024-06-27 19:54:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024803845] [2024-06-27 19:54:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:13,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:13,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:13,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024803845] [2024-06-27 19:54:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024803845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:13,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:13,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:13,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515814394] [2024-06-27 19:54:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:13,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:14,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:14,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 1086 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:14,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:14,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:14,244 INFO L124 PetriNetUnfolderBase]: 338/609 cut-off events. [2024-06-27 19:54:14,245 INFO L125 PetriNetUnfolderBase]: For 26352/26352 co-relation queries the response was YES. [2024-06-27 19:54:14,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 609 events. 338/609 cut-off events. For 26352/26352 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2586 event pairs, 42 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 4429. Up to 491 conditions per place. [2024-06-27 19:54:14,249 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-27 19:54:14,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 1686 flow [2024-06-27 19:54:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 19:54:14,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 19:54:14,275 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 1086 flow. Second operand 9 states and 118 transitions. [2024-06-27 19:54:14,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 1686 flow [2024-06-27 19:54:14,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 1615 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:14,305 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 1212 flow [2024-06-27 19:54:14,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1212, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2024-06-27 19:54:14,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-27 19:54:14,306 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 1212 flow [2024-06-27 19:54:14,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:14,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:14,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:14,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:54:14,306 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)] === [2024-06-27 19:54:14,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -265636788, now seen corresponding path program 5 times [2024-06-27 19:54:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079569371] [2024-06-27 19:54:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079569371] [2024-06-27 19:54:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079569371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:15,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:15,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882131618] [2024-06-27 19:54:15,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:15,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:15,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 1212 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:15,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:15,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:15,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:15,332 INFO L124 PetriNetUnfolderBase]: 339/612 cut-off events. [2024-06-27 19:54:15,333 INFO L125 PetriNetUnfolderBase]: For 27449/27449 co-relation queries the response was YES. [2024-06-27 19:54:15,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 612 events. 339/612 cut-off events. For 27449/27449 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2621 event pairs, 50 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 4525. Up to 493 conditions per place. [2024-06-27 19:54:15,337 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 31 changer transitions 0/141 dead transitions. [2024-06-27 19:54:15,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 1576 flow [2024-06-27 19:54:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 19:54:15,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-27 19:54:15,351 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 1212 flow. Second operand 9 states and 115 transitions. [2024-06-27 19:54:15,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 1576 flow [2024-06-27 19:54:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 1521 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:54:15,389 INFO L231 Difference]: Finished difference. Result has 141 places, 129 transitions, 1269 flow [2024-06-27 19:54:15,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1269, PETRI_PLACES=141, PETRI_TRANSITIONS=129} [2024-06-27 19:54:15,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-27 19:54:15,391 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 129 transitions, 1269 flow [2024-06-27 19:54:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:15,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:54:15,391 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)] === [2024-06-27 19:54:15,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1018053090, now seen corresponding path program 6 times [2024-06-27 19:54:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298265498] [2024-06-27 19:54:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298265498] [2024-06-27 19:54:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298265498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:16,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39357831] [2024-06-27 19:54:16,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:16,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:16,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:16,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 129 transitions, 1269 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:16,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:16,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:16,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:16,490 INFO L124 PetriNetUnfolderBase]: 337/609 cut-off events. [2024-06-27 19:54:16,490 INFO L125 PetriNetUnfolderBase]: For 27018/27018 co-relation queries the response was YES. [2024-06-27 19:54:16,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 609 events. 337/609 cut-off events. For 27018/27018 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2591 event pairs, 50 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 4489. Up to 484 conditions per place. [2024-06-27 19:54:16,502 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-06-27 19:54:16,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 141 transitions, 1593 flow [2024-06-27 19:54:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:16,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:16,504 INFO L175 Difference]: Start difference. First operand has 141 places, 129 transitions, 1269 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:16,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 141 transitions, 1593 flow [2024-06-27 19:54:16,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 1485 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:16,534 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 1234 flow [2024-06-27 19:54:16,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-06-27 19:54:16,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-27 19:54:16,536 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 1234 flow [2024-06-27 19:54:16,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:16,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:16,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:16,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:54:16,536 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)] === [2024-06-27 19:54:16,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1018052842, now seen corresponding path program 3 times [2024-06-27 19:54:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430055410] [2024-06-27 19:54:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:17,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430055410] [2024-06-27 19:54:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430055410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:17,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010172851] [2024-06-27 19:54:17,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:17,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:17,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:17,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:17,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:17,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:17,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:17,615 INFO L124 PetriNetUnfolderBase]: 338/610 cut-off events. [2024-06-27 19:54:17,616 INFO L125 PetriNetUnfolderBase]: For 28005/28005 co-relation queries the response was YES. [2024-06-27 19:54:17,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 610 events. 338/610 cut-off events. For 28005/28005 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2597 event pairs, 45 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 4447. Up to 534 conditions per place. [2024-06-27 19:54:17,620 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-27 19:54:17,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 1590 flow [2024-06-27 19:54:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 19:54:17,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:54:17,623 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 1234 flow. Second operand 9 states and 111 transitions. [2024-06-27 19:54:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 1590 flow [2024-06-27 19:54:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 1448 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:17,654 INFO L231 Difference]: Finished difference. Result has 142 places, 131 transitions, 1177 flow [2024-06-27 19:54:17,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2024-06-27 19:54:17,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-27 19:54:17,655 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 1177 flow [2024-06-27 19:54:17,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:17,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:17,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:54:17,656 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)] === [2024-06-27 19:54:17,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1017813832, now seen corresponding path program 4 times [2024-06-27 19:54:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:17,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256339161] [2024-06-27 19:54:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:17,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256339161] [2024-06-27 19:54:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256339161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:18,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:18,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125374700] [2024-06-27 19:54:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:18,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:18,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 1177 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:18,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:18,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:18,728 INFO L124 PetriNetUnfolderBase]: 336/607 cut-off events. [2024-06-27 19:54:18,729 INFO L125 PetriNetUnfolderBase]: For 27685/27685 co-relation queries the response was YES. [2024-06-27 19:54:18,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 607 events. 336/607 cut-off events. For 27685/27685 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2605 event pairs, 44 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4292. Up to 513 conditions per place. [2024-06-27 19:54:18,734 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 32 changer transitions 0/147 dead transitions. [2024-06-27 19:54:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 147 transitions, 1576 flow [2024-06-27 19:54:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:54:18,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:54:18,736 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 1177 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:54:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 147 transitions, 1576 flow [2024-06-27 19:54:18,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 147 transitions, 1496 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:18,774 INFO L231 Difference]: Finished difference. Result has 145 places, 136 transitions, 1264 flow [2024-06-27 19:54:18,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=145, PETRI_TRANSITIONS=136} [2024-06-27 19:54:18,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-27 19:54:18,777 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 136 transitions, 1264 flow [2024-06-27 19:54:18,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:18,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:18,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:18,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:54:18,784 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)] === [2024-06-27 19:54:18,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1017813522, now seen corresponding path program 1 times [2024-06-27 19:54:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:18,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28165231] [2024-06-27 19:54:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:19,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28165231] [2024-06-27 19:54:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28165231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629717408] [2024-06-27 19:54:19,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:19,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:19,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:19,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:19,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 136 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:19,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:19,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:19,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:20,121 INFO L124 PetriNetUnfolderBase]: 317/584 cut-off events. [2024-06-27 19:54:20,121 INFO L125 PetriNetUnfolderBase]: For 27705/27709 co-relation queries the response was YES. [2024-06-27 19:54:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 584 events. 317/584 cut-off events. For 27705/27709 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2531 event pairs, 41 based on Foata normal form. 5/587 useless extension candidates. Maximal degree in co-relation 4149. Up to 480 conditions per place. [2024-06-27 19:54:20,126 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2024-06-27 19:54:20,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 1534 flow [2024-06-27 19:54:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:20,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 19:54:20,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-27 19:54:20,128 INFO L175 Difference]: Start difference. First operand has 145 places, 136 transitions, 1264 flow. Second operand 9 states and 116 transitions. [2024-06-27 19:54:20,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 1534 flow [2024-06-27 19:54:20,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1469 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:20,164 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 1238 flow [2024-06-27 19:54:20,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1238, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2024-06-27 19:54:20,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-27 19:54:20,165 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 1238 flow [2024-06-27 19:54:20,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:20,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:20,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:54:20,165 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)] === [2024-06-27 19:54:20,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash 678200870, now seen corresponding path program 5 times [2024-06-27 19:54:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:20,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444291816] [2024-06-27 19:54:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444291816] [2024-06-27 19:54:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444291816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:21,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722100859] [2024-06-27 19:54:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:21,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:21,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 1238 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:21,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:21,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:21,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:21,352 INFO L124 PetriNetUnfolderBase]: 337/610 cut-off events. [2024-06-27 19:54:21,352 INFO L125 PetriNetUnfolderBase]: For 28850/28850 co-relation queries the response was YES. [2024-06-27 19:54:21,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 610 events. 337/610 cut-off events. For 28850/28850 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2607 event pairs, 47 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 4348. Up to 569 conditions per place. [2024-06-27 19:54:21,357 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 131 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2024-06-27 19:54:21,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 148 transitions, 1601 flow [2024-06-27 19:54:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:21,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:54:21,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:54:21,358 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 1238 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:54:21,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 148 transitions, 1601 flow [2024-06-27 19:54:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 1552 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:21,392 INFO L231 Difference]: Finished difference. Result has 152 places, 140 transitions, 1286 flow [2024-06-27 19:54:21,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=152, PETRI_TRANSITIONS=140} [2024-06-27 19:54:21,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-27 19:54:21,393 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 140 transitions, 1286 flow [2024-06-27 19:54:21,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:21,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:21,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:54:21,394 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)] === [2024-06-27 19:54:21,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:21,394 INFO L85 PathProgramCache]: Analyzing trace with hash 668072922, now seen corresponding path program 7 times [2024-06-27 19:54:21,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:21,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476388711] [2024-06-27 19:54:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:21,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476388711] [2024-06-27 19:54:22,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476388711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:22,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:22,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19786274] [2024-06-27 19:54:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:22,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:22,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:22,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 140 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:22,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:22,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:22,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:22,269 INFO L124 PetriNetUnfolderBase]: 345/624 cut-off events. [2024-06-27 19:54:22,269 INFO L125 PetriNetUnfolderBase]: For 31782/31782 co-relation queries the response was YES. [2024-06-27 19:54:22,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 624 events. 345/624 cut-off events. For 31782/31782 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2684 event pairs, 54 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 4548. Up to 419 conditions per place. [2024-06-27 19:54:22,273 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 63 changer transitions 0/155 dead transitions. [2024-06-27 19:54:22,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 1794 flow [2024-06-27 19:54:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:22,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:22,275 INFO L175 Difference]: Start difference. First operand has 152 places, 140 transitions, 1286 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:22,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 1794 flow [2024-06-27 19:54:22,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 155 transitions, 1731 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:22,315 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1486 flow [2024-06-27 19:54:22,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-06-27 19:54:22,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-27 19:54:22,318 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1486 flow [2024-06-27 19:54:22,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:22,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:22,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:54:22,319 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)] === [2024-06-27 19:54:22,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 668073170, now seen corresponding path program 6 times [2024-06-27 19:54:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036682506] [2024-06-27 19:54:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:23,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036682506] [2024-06-27 19:54:23,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036682506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:23,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:23,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347848906] [2024-06-27 19:54:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:23,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:23,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:23,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:23,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:23,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:23,284 INFO L124 PetriNetUnfolderBase]: 361/649 cut-off events. [2024-06-27 19:54:23,285 INFO L125 PetriNetUnfolderBase]: For 36942/36942 co-relation queries the response was YES. [2024-06-27 19:54:23,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 649 events. 361/649 cut-off events. For 36942/36942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2825 event pairs, 45 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 5095. Up to 441 conditions per place. [2024-06-27 19:54:23,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 57 changer transitions 0/166 dead transitions. [2024-06-27 19:54:23,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 166 transitions, 2168 flow [2024-06-27 19:54:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 19:54:23,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:54:23,290 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1486 flow. Second operand 9 states and 120 transitions. [2024-06-27 19:54:23,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 166 transitions, 2168 flow [2024-06-27 19:54:23,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 166 transitions, 2084 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:23,338 INFO L231 Difference]: Finished difference. Result has 160 places, 151 transitions, 1627 flow [2024-06-27 19:54:23,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1627, PETRI_PLACES=160, PETRI_TRANSITIONS=151} [2024-06-27 19:54:23,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-27 19:54:23,339 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 151 transitions, 1627 flow [2024-06-27 19:54:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:23,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:23,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:23,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:54:23,339 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)] === [2024-06-27 19:54:23,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 391025240, now seen corresponding path program 7 times [2024-06-27 19:54:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154429843] [2024-06-27 19:54:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:23,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154429843] [2024-06-27 19:54:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154429843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:23,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:23,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253653813] [2024-06-27 19:54:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:23,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:23,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:24,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 151 transitions, 1627 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:24,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:24,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:24,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:24,233 INFO L124 PetriNetUnfolderBase]: 362/651 cut-off events. [2024-06-27 19:54:24,233 INFO L125 PetriNetUnfolderBase]: For 37684/37684 co-relation queries the response was YES. [2024-06-27 19:54:24,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 651 events. 362/651 cut-off events. For 37684/37684 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2831 event pairs, 45 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 5189. Up to 444 conditions per place. [2024-06-27 19:54:24,238 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 57 changer transitions 0/167 dead transitions. [2024-06-27 19:54:24,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 2239 flow [2024-06-27 19:54:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 19:54:24,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 19:54:24,239 INFO L175 Difference]: Start difference. First operand has 160 places, 151 transitions, 1627 flow. Second operand 9 states and 121 transitions. [2024-06-27 19:54:24,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 2239 flow [2024-06-27 19:54:24,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 167 transitions, 2152 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 19:54:24,297 INFO L231 Difference]: Finished difference. Result has 165 places, 153 transitions, 1697 flow [2024-06-27 19:54:24,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1697, PETRI_PLACES=165, PETRI_TRANSITIONS=153} [2024-06-27 19:54:24,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-27 19:54:24,297 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 153 transitions, 1697 flow [2024-06-27 19:54:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:24,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:24,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:54:24,298 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)] === [2024-06-27 19:54:24,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 8 times [2024-06-27 19:54:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407063648] [2024-06-27 19:54:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407063648] [2024-06-27 19:54:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407063648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:24,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:24,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401831286] [2024-06-27 19:54:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:25,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:25,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 153 transitions, 1697 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:25,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:25,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:25,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:25,205 INFO L124 PetriNetUnfolderBase]: 369/663 cut-off events. [2024-06-27 19:54:25,206 INFO L125 PetriNetUnfolderBase]: For 39198/39198 co-relation queries the response was YES. [2024-06-27 19:54:25,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5417 conditions, 663 events. 369/663 cut-off events. For 39198/39198 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2904 event pairs, 49 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 5335. Up to 550 conditions per place. [2024-06-27 19:54:25,210 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-27 19:54:25,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 2211 flow [2024-06-27 19:54:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 19:54:25,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-27 19:54:25,224 INFO L175 Difference]: Start difference. First operand has 165 places, 153 transitions, 1697 flow. Second operand 9 states and 115 transitions. [2024-06-27 19:54:25,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 2211 flow [2024-06-27 19:54:25,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 167 transitions, 2086 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:25,284 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 1684 flow [2024-06-27 19:54:25,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2024-06-27 19:54:25,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-27 19:54:25,285 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 1684 flow [2024-06-27 19:54:25,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:25,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:25,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:25,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:54:25,286 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)] === [2024-06-27 19:54:25,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1304440134, now seen corresponding path program 2 times [2024-06-27 19:54:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933982513] [2024-06-27 19:54:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:26,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933982513] [2024-06-27 19:54:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933982513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:26,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:26,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486527907] [2024-06-27 19:54:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:26,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:26,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:26,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:26,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:26,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:26,543 INFO L124 PetriNetUnfolderBase]: 348/637 cut-off events. [2024-06-27 19:54:26,543 INFO L125 PetriNetUnfolderBase]: For 38215/38219 co-relation queries the response was YES. [2024-06-27 19:54:26,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 637 events. 348/637 cut-off events. For 38215/38219 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2829 event pairs, 44 based on Foata normal form. 5/638 useless extension candidates. Maximal degree in co-relation 5019. Up to 509 conditions per place. [2024-06-27 19:54:26,547 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 20 changer transitions 0/163 dead transitions. [2024-06-27 19:54:26,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1970 flow [2024-06-27 19:54:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 19:54:26,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-27 19:54:26,549 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 1684 flow. Second operand 9 states and 115 transitions. [2024-06-27 19:54:26,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1970 flow [2024-06-27 19:54:26,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 1802 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:26,609 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 1561 flow [2024-06-27 19:54:26,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2024-06-27 19:54:26,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-27 19:54:26,609 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 1561 flow [2024-06-27 19:54:26,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:26,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:26,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:54:26,610 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)] === [2024-06-27 19:54:26,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 382973300, now seen corresponding path program 9 times [2024-06-27 19:54:26,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:26,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14892914] [2024-06-27 19:54:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14892914] [2024-06-27 19:54:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14892914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376328545] [2024-06-27 19:54:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:27,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 1561 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:27,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:27,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:27,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:27,613 INFO L124 PetriNetUnfolderBase]: 372/668 cut-off events. [2024-06-27 19:54:27,613 INFO L125 PetriNetUnfolderBase]: For 40089/40089 co-relation queries the response was YES. [2024-06-27 19:54:27,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 668 events. 372/668 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2935 event pairs, 49 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 5111. Up to 553 conditions per place. [2024-06-27 19:54:27,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-06-27 19:54:27,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 2087 flow [2024-06-27 19:54:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:27,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:54:27,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:54:27,619 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 1561 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:54:27,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 2087 flow [2024-06-27 19:54:27,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 170 transitions, 2025 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:27,677 INFO L231 Difference]: Finished difference. Result has 169 places, 157 transitions, 1602 flow [2024-06-27 19:54:27,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1602, PETRI_PLACES=169, PETRI_TRANSITIONS=157} [2024-06-27 19:54:27,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-27 19:54:27,678 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 157 transitions, 1602 flow [2024-06-27 19:54:27,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:27,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:27,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:27,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:54:27,679 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)] === [2024-06-27 19:54:27,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1304686212, now seen corresponding path program 8 times [2024-06-27 19:54:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391320983] [2024-06-27 19:54:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391320983] [2024-06-27 19:54:28,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391320983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:28,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:28,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:28,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313699956] [2024-06-27 19:54:28,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:28,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:28,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:28,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 157 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:28,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:28,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:28,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:28,829 INFO L124 PetriNetUnfolderBase]: 373/671 cut-off events. [2024-06-27 19:54:28,829 INFO L125 PetriNetUnfolderBase]: For 40791/40791 co-relation queries the response was YES. [2024-06-27 19:54:28,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 671 events. 373/671 cut-off events. For 40791/40791 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2956 event pairs, 57 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 5145. Up to 536 conditions per place. [2024-06-27 19:54:28,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-27 19:54:28,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 2018 flow [2024-06-27 19:54:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:54:28,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:54:28,836 INFO L175 Difference]: Start difference. First operand has 169 places, 157 transitions, 1602 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:54:28,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 2018 flow [2024-06-27 19:54:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 1942 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:28,906 INFO L231 Difference]: Finished difference. Result has 172 places, 159 transitions, 1646 flow [2024-06-27 19:54:28,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1646, PETRI_PLACES=172, PETRI_TRANSITIONS=159} [2024-06-27 19:54:28,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-27 19:54:28,907 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 159 transitions, 1646 flow [2024-06-27 19:54:28,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:28,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:28,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:54:28,908 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)] === [2024-06-27 19:54:28,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash 382742412, now seen corresponding path program 9 times [2024-06-27 19:54:28,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419719043] [2024-06-27 19:54:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:29,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419719043] [2024-06-27 19:54:29,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419719043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:29,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035719548] [2024-06-27 19:54:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:29,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:29,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 159 transitions, 1646 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:29,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:29,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:29,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:30,037 INFO L124 PetriNetUnfolderBase]: 376/676 cut-off events. [2024-06-27 19:54:30,037 INFO L125 PetriNetUnfolderBase]: For 41183/41183 co-relation queries the response was YES. [2024-06-27 19:54:30,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 676 events. 376/676 cut-off events. For 41183/41183 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2975 event pairs, 54 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5213. Up to 535 conditions per place. [2024-06-27 19:54:30,042 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2024-06-27 19:54:30,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 2108 flow [2024-06-27 19:54:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:54:30,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:54:30,044 INFO L175 Difference]: Start difference. First operand has 172 places, 159 transitions, 1646 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:54:30,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 2108 flow [2024-06-27 19:54:30,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 174 transitions, 1994 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:30,118 INFO L231 Difference]: Finished difference. Result has 175 places, 162 transitions, 1680 flow [2024-06-27 19:54:30,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=175, PETRI_TRANSITIONS=162} [2024-06-27 19:54:30,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-27 19:54:30,119 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 162 transitions, 1680 flow [2024-06-27 19:54:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:30,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:30,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:54:30,120 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)] === [2024-06-27 19:54:30,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 10 times [2024-06-27 19:54:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:30,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396747977] [2024-06-27 19:54:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:30,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396747977] [2024-06-27 19:54:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396747977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:30,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:30,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796319290] [2024-06-27 19:54:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:30,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:30,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:30,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:30,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 162 transitions, 1680 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:30,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:30,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:30,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:31,206 INFO L124 PetriNetUnfolderBase]: 374/673 cut-off events. [2024-06-27 19:54:31,206 INFO L125 PetriNetUnfolderBase]: For 41252/41252 co-relation queries the response was YES. [2024-06-27 19:54:31,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 673 events. 374/673 cut-off events. For 41252/41252 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2957 event pairs, 57 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 5125. Up to 523 conditions per place. [2024-06-27 19:54:31,210 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 44 changer transitions 0/172 dead transitions. [2024-06-27 19:54:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 172 transitions, 2064 flow [2024-06-27 19:54:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 19:54:31,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 19:54:31,212 INFO L175 Difference]: Start difference. First operand has 175 places, 162 transitions, 1680 flow. Second operand 9 states and 118 transitions. [2024-06-27 19:54:31,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 172 transitions, 2064 flow [2024-06-27 19:54:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 172 transitions, 1967 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:31,277 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 1676 flow [2024-06-27 19:54:31,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1676, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2024-06-27 19:54:31,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-27 19:54:31,278 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 1676 flow [2024-06-27 19:54:31,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:31,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:31,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:54:31,279 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)] === [2024-06-27 19:54:31,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 10 times [2024-06-27 19:54:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860120903] [2024-06-27 19:54:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860120903] [2024-06-27 19:54:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860120903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:32,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855623003] [2024-06-27 19:54:32,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:32,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:32,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:32,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 1676 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:32,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:32,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:32,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:32,314 INFO L124 PetriNetUnfolderBase]: 370/666 cut-off events. [2024-06-27 19:54:32,314 INFO L125 PetriNetUnfolderBase]: For 41358/41358 co-relation queries the response was YES. [2024-06-27 19:54:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5075 conditions, 666 events. 370/666 cut-off events. For 41358/41358 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2927 event pairs, 48 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4988. Up to 580 conditions per place. [2024-06-27 19:54:32,319 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-06-27 19:54:32,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 172 transitions, 2054 flow [2024-06-27 19:54:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 19:54:32,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-27 19:54:32,320 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 1676 flow. Second operand 9 states and 110 transitions. [2024-06-27 19:54:32,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 172 transitions, 2054 flow [2024-06-27 19:54:32,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 172 transitions, 1807 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-27 19:54:32,386 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 1484 flow [2024-06-27 19:54:32,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2024-06-27 19:54:32,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-27 19:54:32,387 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 1484 flow [2024-06-27 19:54:32,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:32,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:32,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:32,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:54:32,388 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)] === [2024-06-27 19:54:32,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2128706908, now seen corresponding path program 1 times [2024-06-27 19:54:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:32,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978748851] [2024-06-27 19:54:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:33,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:33,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978748851] [2024-06-27 19:54:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978748851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:33,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964673158] [2024-06-27 19:54:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:33,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:33,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 1484 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:33,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:33,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:33,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:33,678 INFO L124 PetriNetUnfolderBase]: 373/672 cut-off events. [2024-06-27 19:54:33,678 INFO L125 PetriNetUnfolderBase]: For 41110/41110 co-relation queries the response was YES. [2024-06-27 19:54:33,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 672 events. 373/672 cut-off events. For 41110/41110 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2958 event pairs, 39 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 4790. Up to 578 conditions per place. [2024-06-27 19:54:33,683 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 27 changer transitions 0/183 dead transitions. [2024-06-27 19:54:33,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 1942 flow [2024-06-27 19:54:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:54:33,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:54:33,684 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 1484 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:54:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 1942 flow [2024-06-27 19:54:33,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 1874 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:33,740 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1517 flow [2024-06-27 19:54:33,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-27 19:54:33,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-27 19:54:33,740 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1517 flow [2024-06-27 19:54:33,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:33,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:33,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:33,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:54:33,741 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)] === [2024-06-27 19:54:33,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1391723182, now seen corresponding path program 2 times [2024-06-27 19:54:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:33,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314589631] [2024-06-27 19:54:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314589631] [2024-06-27 19:54:34,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314589631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:34,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:34,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:34,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212898839] [2024-06-27 19:54:34,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:34,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:34,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:34,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:34,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1517 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:34,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:34,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:34,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:34,897 INFO L124 PetriNetUnfolderBase]: 376/679 cut-off events. [2024-06-27 19:54:34,898 INFO L125 PetriNetUnfolderBase]: For 42756/42756 co-relation queries the response was YES. [2024-06-27 19:54:34,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4985 conditions, 679 events. 376/679 cut-off events. For 42756/42756 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3023 event pairs, 39 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 4899. Up to 577 conditions per place. [2024-06-27 19:54:34,902 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-27 19:54:34,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 1981 flow [2024-06-27 19:54:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:54:34,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:54:34,904 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1517 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:54:34,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 1981 flow [2024-06-27 19:54:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 183 transitions, 1896 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:34,969 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1543 flow [2024-06-27 19:54:34,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2024-06-27 19:54:34,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-27 19:54:34,970 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1543 flow [2024-06-27 19:54:34,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:34,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:34,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:54:34,971 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)] === [2024-06-27 19:54:34,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1335050691, now seen corresponding path program 1 times [2024-06-27 19:54:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809405229] [2024-06-27 19:54:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809405229] [2024-06-27 19:54:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809405229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215420618] [2024-06-27 19:54:35,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:35,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:35,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:35,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1543 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:35,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:35,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:35,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:36,096 INFO L124 PetriNetUnfolderBase]: 388/699 cut-off events. [2024-06-27 19:54:36,097 INFO L125 PetriNetUnfolderBase]: For 49159/49159 co-relation queries the response was YES. [2024-06-27 19:54:36,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 699 events. 388/699 cut-off events. For 49159/49159 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3134 event pairs, 38 based on Foata normal form. 4/701 useless extension candidates. Maximal degree in co-relation 5068. Up to 588 conditions per place. [2024-06-27 19:54:36,102 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 31 changer transitions 0/187 dead transitions. [2024-06-27 19:54:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 187 transitions, 2029 flow [2024-06-27 19:54:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:54:36,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:54:36,103 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1543 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:54:36,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 187 transitions, 2029 flow [2024-06-27 19:54:36,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 187 transitions, 1934 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:36,173 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 1566 flow [2024-06-27 19:54:36,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1566, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2024-06-27 19:54:36,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-27 19:54:36,173 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 1566 flow [2024-06-27 19:54:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:36,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:54:36,174 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)] === [2024-06-27 19:54:36,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1276235862, now seen corresponding path program 3 times [2024-06-27 19:54:36,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141205441] [2024-06-27 19:54:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:37,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141205441] [2024-06-27 19:54:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141205441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:37,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076195654] [2024-06-27 19:54:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:37,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:37,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:37,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 1566 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:37,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:37,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:37,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:37,462 INFO L124 PetriNetUnfolderBase]: 396/717 cut-off events. [2024-06-27 19:54:37,463 INFO L125 PetriNetUnfolderBase]: For 48413/48413 co-relation queries the response was YES. [2024-06-27 19:54:37,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5414 conditions, 717 events. 396/717 cut-off events. For 48413/48413 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3260 event pairs, 41 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 5326. Up to 578 conditions per place. [2024-06-27 19:54:37,468 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 40 changer transitions 0/188 dead transitions. [2024-06-27 19:54:37,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 188 transitions, 2194 flow [2024-06-27 19:54:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:54:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:54:37,469 INFO L175 Difference]: Start difference. First operand has 181 places, 169 transitions, 1566 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:54:37,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 188 transitions, 2194 flow [2024-06-27 19:54:37,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 2098 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:37,551 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 1655 flow [2024-06-27 19:54:37,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1655, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2024-06-27 19:54:37,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-27 19:54:37,552 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 1655 flow [2024-06-27 19:54:37,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:37,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:37,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:37,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:54:37,552 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)] === [2024-06-27 19:54:37,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1276235645, now seen corresponding path program 2 times [2024-06-27 19:54:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:37,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272163665] [2024-06-27 19:54:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:37,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:38,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:38,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272163665] [2024-06-27 19:54:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272163665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:38,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703272640] [2024-06-27 19:54:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:38,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:38,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:38,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:38,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 1655 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:38,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:38,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:38,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:38,640 INFO L124 PetriNetUnfolderBase]: 432/775 cut-off events. [2024-06-27 19:54:38,640 INFO L125 PetriNetUnfolderBase]: For 61385/61385 co-relation queries the response was YES. [2024-06-27 19:54:38,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 775 events. 432/775 cut-off events. For 61385/61385 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3576 event pairs, 41 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 6063. Up to 591 conditions per place. [2024-06-27 19:54:38,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 46 changer transitions 0/199 dead transitions. [2024-06-27 19:54:38,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 199 transitions, 2467 flow [2024-06-27 19:54:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 19:54:38,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 19:54:38,647 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 1655 flow. Second operand 10 states and 133 transitions. [2024-06-27 19:54:38,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 199 transitions, 2467 flow [2024-06-27 19:54:38,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 199 transitions, 2383 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:38,732 INFO L231 Difference]: Finished difference. Result has 188 places, 181 transitions, 1814 flow [2024-06-27 19:54:38,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=188, PETRI_TRANSITIONS=181} [2024-06-27 19:54:38,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-27 19:54:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 181 transitions, 1814 flow [2024-06-27 19:54:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:38,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:38,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:54:38,733 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)] === [2024-06-27 19:54:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1276227926, now seen corresponding path program 1 times [2024-06-27 19:54:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6093436] [2024-06-27 19:54:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6093436] [2024-06-27 19:54:39,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6093436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:39,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:39,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:54:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575102511] [2024-06-27 19:54:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:39,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:54:39,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:54:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:54:39,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:39,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 181 transitions, 1814 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) [2024-06-27 19:54:39,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:39,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:39,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:39,927 INFO L124 PetriNetUnfolderBase]: 430/771 cut-off events. [2024-06-27 19:54:39,928 INFO L125 PetriNetUnfolderBase]: For 60732/60732 co-relation queries the response was YES. [2024-06-27 19:54:39,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 771 events. 430/771 cut-off events. For 60732/60732 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3544 event pairs, 40 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 6174. Up to 695 conditions per place. [2024-06-27 19:54:39,933 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 170 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2024-06-27 19:54:39,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 194 transitions, 2236 flow [2024-06-27 19:54:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:54:39,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:54:39,934 INFO L175 Difference]: Start difference. First operand has 188 places, 181 transitions, 1814 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:54:39,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 194 transitions, 2236 flow [2024-06-27 19:54:40,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 194 transitions, 2137 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:40,028 INFO L231 Difference]: Finished difference. Result has 192 places, 181 transitions, 1763 flow [2024-06-27 19:54:40,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1763, PETRI_PLACES=192, PETRI_TRANSITIONS=181} [2024-06-27 19:54:40,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-27 19:54:40,030 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 181 transitions, 1763 flow [2024-06-27 19:54:40,030 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) [2024-06-27 19:54:40,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:40,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:40,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:54:40,031 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)] === [2024-06-27 19:54:40,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1479150471, now seen corresponding path program 3 times [2024-06-27 19:54:40,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:40,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976371963] [2024-06-27 19:54:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:40,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:40,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976371963] [2024-06-27 19:54:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976371963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:40,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656564898] [2024-06-27 19:54:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:40,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:40,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:40,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 181 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:40,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:40,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:40,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:41,110 INFO L124 PetriNetUnfolderBase]: 426/766 cut-off events. [2024-06-27 19:54:41,110 INFO L125 PetriNetUnfolderBase]: For 60260/60260 co-relation queries the response was YES. [2024-06-27 19:54:41,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 766 events. 426/766 cut-off events. For 60260/60260 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3535 event pairs, 42 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5947. Up to 587 conditions per place. [2024-06-27 19:54:41,116 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 48 changer transitions 0/197 dead transitions. [2024-06-27 19:54:41,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 2327 flow [2024-06-27 19:54:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 19:54:41,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 19:54:41,117 INFO L175 Difference]: Start difference. First operand has 192 places, 181 transitions, 1763 flow. Second operand 10 states and 131 transitions. [2024-06-27 19:54:41,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 2327 flow [2024-06-27 19:54:41,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 197 transitions, 2254 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:41,215 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 1792 flow [2024-06-27 19:54:41,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1792, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-06-27 19:54:41,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-27 19:54:41,216 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 1792 flow [2024-06-27 19:54:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:54:41,217 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)] === [2024-06-27 19:54:41,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941004, now seen corresponding path program 4 times [2024-06-27 19:54:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056456534] [2024-06-27 19:54:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056456534] [2024-06-27 19:54:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056456534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:41,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:41,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092347368] [2024-06-27 19:54:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:41,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:42,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:42,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 1792 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:42,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:42,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:42,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:42,349 INFO L124 PetriNetUnfolderBase]: 424/763 cut-off events. [2024-06-27 19:54:42,349 INFO L125 PetriNetUnfolderBase]: For 59088/59088 co-relation queries the response was YES. [2024-06-27 19:54:42,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6039 conditions, 763 events. 424/763 cut-off events. For 59088/59088 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3507 event pairs, 42 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 5945. Up to 647 conditions per place. [2024-06-27 19:54:42,355 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2024-06-27 19:54:42,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 195 transitions, 2212 flow [2024-06-27 19:54:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:54:42,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:54:42,356 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 1792 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:54:42,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 195 transitions, 2212 flow [2024-06-27 19:54:42,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 2090 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:42,454 INFO L231 Difference]: Finished difference. Result has 196 places, 181 transitions, 1739 flow [2024-06-27 19:54:42,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1739, PETRI_PLACES=196, PETRI_TRANSITIONS=181} [2024-06-27 19:54:42,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 19:54:42,455 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 181 transitions, 1739 flow [2024-06-27 19:54:42,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:42,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:42,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:54:42,455 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)] === [2024-06-27 19:54:42,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941221, now seen corresponding path program 4 times [2024-06-27 19:54:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:42,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160023984] [2024-06-27 19:54:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160023984] [2024-06-27 19:54:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160023984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:43,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059774862] [2024-06-27 19:54:43,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:43,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:43,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:43,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:43,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 181 transitions, 1739 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:43,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:43,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:43,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:43,467 INFO L124 PetriNetUnfolderBase]: 416/751 cut-off events. [2024-06-27 19:54:43,468 INFO L125 PetriNetUnfolderBase]: For 58749/58749 co-relation queries the response was YES. [2024-06-27 19:54:43,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 751 events. 416/751 cut-off events. For 58749/58749 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3457 event pairs, 40 based on Foata normal form. 4/753 useless extension candidates. Maximal degree in co-relation 5554. Up to 626 conditions per place. [2024-06-27 19:54:43,473 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 33 changer transitions 0/196 dead transitions. [2024-06-27 19:54:43,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 2173 flow [2024-06-27 19:54:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:54:43,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:54:43,475 INFO L175 Difference]: Start difference. First operand has 196 places, 181 transitions, 1739 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:54:43,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 2173 flow [2024-06-27 19:54:43,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 2054 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:54:43,565 INFO L231 Difference]: Finished difference. Result has 197 places, 181 transitions, 1692 flow [2024-06-27 19:54:43,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=197, PETRI_TRANSITIONS=181} [2024-06-27 19:54:43,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-27 19:54:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 181 transitions, 1692 flow [2024-06-27 19:54:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:54:43,566 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)] === [2024-06-27 19:54:43,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1495075688, now seen corresponding path program 5 times [2024-06-27 19:54:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98358199] [2024-06-27 19:54:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:44,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98358199] [2024-06-27 19:54:44,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98358199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:44,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654865919] [2024-06-27 19:54:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:44,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:44,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:44,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 181 transitions, 1692 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:44,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:44,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:44,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:45,048 INFO L124 PetriNetUnfolderBase]: 419/758 cut-off events. [2024-06-27 19:54:45,048 INFO L125 PetriNetUnfolderBase]: For 55098/55098 co-relation queries the response was YES. [2024-06-27 19:54:45,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 758 events. 419/758 cut-off events. For 55098/55098 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3519 event pairs, 44 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5579. Up to 626 conditions per place. [2024-06-27 19:54:45,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 34 changer transitions 0/195 dead transitions. [2024-06-27 19:54:45,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 2172 flow [2024-06-27 19:54:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:45,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:54:45,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:54:45,056 INFO L175 Difference]: Start difference. First operand has 197 places, 181 transitions, 1692 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:54:45,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 2172 flow [2024-06-27 19:54:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 195 transitions, 2069 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:54:45,150 INFO L231 Difference]: Finished difference. Result has 197 places, 183 transitions, 1720 flow [2024-06-27 19:54:45,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=197, PETRI_TRANSITIONS=183} [2024-06-27 19:54:45,151 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-27 19:54:45,151 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 183 transitions, 1720 flow [2024-06-27 19:54:45,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:45,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:45,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:45,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:54:45,152 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)] === [2024-06-27 19:54:45,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1495075471, now seen corresponding path program 5 times [2024-06-27 19:54:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:45,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186483345] [2024-06-27 19:54:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186483345] [2024-06-27 19:54:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186483345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403613140] [2024-06-27 19:54:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:46,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:46,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 183 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:46,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:46,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:46,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:46,278 INFO L124 PetriNetUnfolderBase]: 425/768 cut-off events. [2024-06-27 19:54:46,278 INFO L125 PetriNetUnfolderBase]: For 58982/58982 co-relation queries the response was YES. [2024-06-27 19:54:46,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5771 conditions, 768 events. 425/768 cut-off events. For 58982/58982 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3583 event pairs, 44 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 5674. Up to 633 conditions per place. [2024-06-27 19:54:46,283 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2024-06-27 19:54:46,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 198 transitions, 2210 flow [2024-06-27 19:54:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:54:46,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:54:46,284 INFO L175 Difference]: Start difference. First operand has 197 places, 183 transitions, 1720 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:54:46,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 198 transitions, 2210 flow [2024-06-27 19:54:46,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 2095 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:46,378 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 1745 flow [2024-06-27 19:54:46,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1745, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2024-06-27 19:54:46,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 19:54:46,380 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 1745 flow [2024-06-27 19:54:46,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:46,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:46,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:54:46,381 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)] === [2024-06-27 19:54:46,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1494866221, now seen corresponding path program 6 times [2024-06-27 19:54:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:46,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819059147] [2024-06-27 19:54:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819059147] [2024-06-27 19:54:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819059147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:46,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:46,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157148851] [2024-06-27 19:54:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:46,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:47,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:47,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 1745 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:47,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:47,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:47,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:47,361 INFO L124 PetriNetUnfolderBase]: 446/802 cut-off events. [2024-06-27 19:54:47,361 INFO L125 PetriNetUnfolderBase]: For 66296/66296 co-relation queries the response was YES. [2024-06-27 19:54:47,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 802 events. 446/802 cut-off events. For 66296/66296 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3752 event pairs, 44 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 6187. Up to 632 conditions per place. [2024-06-27 19:54:47,367 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 44 changer transitions 0/207 dead transitions. [2024-06-27 19:54:47,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 2456 flow [2024-06-27 19:54:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 19:54:47,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 19:54:47,368 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 1745 flow. Second operand 10 states and 132 transitions. [2024-06-27 19:54:47,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 2456 flow [2024-06-27 19:54:47,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 207 transitions, 2338 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:47,467 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 1832 flow [2024-06-27 19:54:47,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2024-06-27 19:54:47,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 19:54:47,468 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 1832 flow [2024-06-27 19:54:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:47,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:47,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:47,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:54:47,469 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)] === [2024-06-27 19:54:47,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1487446991, now seen corresponding path program 1 times [2024-06-27 19:54:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270948867] [2024-06-27 19:54:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:48,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:48,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270948867] [2024-06-27 19:54:48,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270948867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:48,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:48,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:48,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199300102] [2024-06-27 19:54:48,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:48,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:48,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:48,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:48,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:54:48,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 1832 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:54:48,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:48,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:54:48,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:49,246 INFO L124 PetriNetUnfolderBase]: 427/783 cut-off events. [2024-06-27 19:54:49,246 INFO L125 PetriNetUnfolderBase]: For 70308/70309 co-relation queries the response was YES. [2024-06-27 19:54:49,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6247 conditions, 783 events. 427/783 cut-off events. For 70308/70309 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3768 event pairs, 37 based on Foata normal form. 3/784 useless extension candidates. Maximal degree in co-relation 6147. Up to 645 conditions per place. [2024-06-27 19:54:49,252 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 18 changer transitions 0/204 dead transitions. [2024-06-27 19:54:49,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 204 transitions, 2226 flow [2024-06-27 19:54:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:54:49,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:54:49,253 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 1832 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:54:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 204 transitions, 2226 flow [2024-06-27 19:54:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 204 transitions, 2141 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:49,372 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 1807 flow [2024-06-27 19:54:49,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2024-06-27 19:54:49,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-27 19:54:49,372 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 1807 flow [2024-06-27 19:54:49,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:54:49,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:49,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:54:49,373 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)] === [2024-06-27 19:54:49,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1763604971, now seen corresponding path program 7 times [2024-06-27 19:54:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573762050] [2024-06-27 19:54:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:50,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573762050] [2024-06-27 19:54:50,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573762050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:50,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225436056] [2024-06-27 19:54:50,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:50,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:50,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:50,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:50,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:50,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:50,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:50,590 INFO L124 PetriNetUnfolderBase]: 451/812 cut-off events. [2024-06-27 19:54:50,590 INFO L125 PetriNetUnfolderBase]: For 68991/68991 co-relation queries the response was YES. [2024-06-27 19:54:50,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 812 events. 451/812 cut-off events. For 68991/68991 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3832 event pairs, 44 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 6253. Up to 643 conditions per place. [2024-06-27 19:54:50,596 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 45 changer transitions 0/210 dead transitions. [2024-06-27 19:54:50,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 210 transitions, 2468 flow [2024-06-27 19:54:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 19:54:50,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 19:54:50,597 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 1807 flow. Second operand 10 states and 133 transitions. [2024-06-27 19:54:50,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 210 transitions, 2468 flow [2024-06-27 19:54:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 2418 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:50,729 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 1880 flow [2024-06-27 19:54:50,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1880, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-06-27 19:54:50,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-27 19:54:50,729 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 1880 flow [2024-06-27 19:54:50,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:50,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:50,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:54:50,730 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)] === [2024-06-27 19:54:50,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1082296452, now seen corresponding path program 6 times [2024-06-27 19:54:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269839987] [2024-06-27 19:54:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:51,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:51,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269839987] [2024-06-27 19:54:51,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269839987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:51,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:51,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:51,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357480557] [2024-06-27 19:54:51,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:51,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:51,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:51,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:51,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:51,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:51,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:52,207 INFO L124 PetriNetUnfolderBase]: 454/819 cut-off events. [2024-06-27 19:54:52,207 INFO L125 PetriNetUnfolderBase]: For 69206/69206 co-relation queries the response was YES. [2024-06-27 19:54:52,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 819 events. 454/819 cut-off events. For 69206/69206 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3880 event pairs, 44 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 6399. Up to 676 conditions per place. [2024-06-27 19:54:52,213 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 38 changer transitions 0/208 dead transitions. [2024-06-27 19:54:52,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 208 transitions, 2400 flow [2024-06-27 19:54:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:54:52,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:54:52,215 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 1880 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:54:52,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 208 transitions, 2400 flow [2024-06-27 19:54:52,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 208 transitions, 2310 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:52,325 INFO L231 Difference]: Finished difference. Result has 211 places, 196 transitions, 1937 flow [2024-06-27 19:54:52,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=211, PETRI_TRANSITIONS=196} [2024-06-27 19:54:52,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-27 19:54:52,326 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 196 transitions, 1937 flow [2024-06-27 19:54:52,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:52,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:52,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:54:52,327 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)] === [2024-06-27 19:54:52,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1756178642, now seen corresponding path program 2 times [2024-06-27 19:54:52,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:52,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663032515] [2024-06-27 19:54:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:52,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:53,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663032515] [2024-06-27 19:54:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663032515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229497910] [2024-06-27 19:54:53,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:53,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:53,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:53,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 196 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:53,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:53,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:53,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:53,841 INFO L124 PetriNetUnfolderBase]: 452/815 cut-off events. [2024-06-27 19:54:53,841 INFO L125 PetriNetUnfolderBase]: For 68968/68968 co-relation queries the response was YES. [2024-06-27 19:54:53,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6431 conditions, 815 events. 452/815 cut-off events. For 68968/68968 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3880 event pairs, 38 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 6327. Up to 692 conditions per place. [2024-06-27 19:54:53,849 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 38 changer transitions 0/207 dead transitions. [2024-06-27 19:54:53,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2379 flow [2024-06-27 19:54:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:54:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:54:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:54:53,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:54:53,851 INFO L175 Difference]: Start difference. First operand has 211 places, 196 transitions, 1937 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:54:53,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2379 flow [2024-06-27 19:54:53,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 2228 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:53,998 INFO L231 Difference]: Finished difference. Result has 212 places, 196 transitions, 1869 flow [2024-06-27 19:54:53,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1869, PETRI_PLACES=212, PETRI_TRANSITIONS=196} [2024-06-27 19:54:53,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-27 19:54:53,999 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 196 transitions, 1869 flow [2024-06-27 19:54:53,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:53,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:53,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:53,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:54:53,999 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)] === [2024-06-27 19:54:54,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1074879485, now seen corresponding path program 8 times [2024-06-27 19:54:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822522311] [2024-06-27 19:54:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:54,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:54,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822522311] [2024-06-27 19:54:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822522311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:54,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:54,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:54,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302497032] [2024-06-27 19:54:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:54,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:54,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:54,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 196 transitions, 1869 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:54,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:54,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:54,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:55,242 INFO L124 PetriNetUnfolderBase]: 468/842 cut-off events. [2024-06-27 19:54:55,243 INFO L125 PetriNetUnfolderBase]: For 77914/77914 co-relation queries the response was YES. [2024-06-27 19:54:55,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 842 events. 468/842 cut-off events. For 77914/77914 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4003 event pairs, 47 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 6630. Up to 555 conditions per place. [2024-06-27 19:54:55,250 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 78 changer transitions 0/215 dead transitions. [2024-06-27 19:54:55,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 215 transitions, 2581 flow [2024-06-27 19:54:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 19:54:55,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 19:54:55,251 INFO L175 Difference]: Start difference. First operand has 212 places, 196 transitions, 1869 flow. Second operand 10 states and 133 transitions. [2024-06-27 19:54:55,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 215 transitions, 2581 flow [2024-06-27 19:54:55,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 2496 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:55,382 INFO L231 Difference]: Finished difference. Result has 215 places, 200 transitions, 2063 flow [2024-06-27 19:54:55,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=215, PETRI_TRANSITIONS=200} [2024-06-27 19:54:55,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 19:54:55,383 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 200 transitions, 2063 flow [2024-06-27 19:54:55,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:55,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:55,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:54:55,384 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)] === [2024-06-27 19:54:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1075146612, now seen corresponding path program 7 times [2024-06-27 19:54:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935916378] [2024-06-27 19:54:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935916378] [2024-06-27 19:54:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935916378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735491453] [2024-06-27 19:54:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:56,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:56,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 200 transitions, 2063 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:56,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:56,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:56,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:56,986 INFO L124 PetriNetUnfolderBase]: 471/849 cut-off events. [2024-06-27 19:54:56,986 INFO L125 PetriNetUnfolderBase]: For 76842/76842 co-relation queries the response was YES. [2024-06-27 19:54:56,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 849 events. 471/849 cut-off events. For 76842/76842 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4062 event pairs, 47 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 6958. Up to 661 conditions per place. [2024-06-27 19:54:56,992 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 55 changer transitions 0/214 dead transitions. [2024-06-27 19:54:56,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 214 transitions, 2603 flow [2024-06-27 19:54:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:54:56,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:54:56,993 INFO L175 Difference]: Start difference. First operand has 215 places, 200 transitions, 2063 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:54:56,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 214 transitions, 2603 flow [2024-06-27 19:54:57,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 214 transitions, 2501 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:57,130 INFO L231 Difference]: Finished difference. Result has 219 places, 202 transitions, 2146 flow [2024-06-27 19:54:57,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2146, PETRI_PLACES=219, PETRI_TRANSITIONS=202} [2024-06-27 19:54:57,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 19:54:57,131 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 202 transitions, 2146 flow [2024-06-27 19:54:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:57,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:57,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:57,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:54:57,131 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)] === [2024-06-27 19:54:57,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1075146395, now seen corresponding path program 9 times [2024-06-27 19:54:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:57,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252347517] [2024-06-27 19:54:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:57,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:57,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252347517] [2024-06-27 19:54:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252347517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005480931] [2024-06-27 19:54:57,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:57,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:57,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:57,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 202 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:57,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:57,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:57,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:58,230 INFO L124 PetriNetUnfolderBase]: 477/859 cut-off events. [2024-06-27 19:54:58,231 INFO L125 PetriNetUnfolderBase]: For 81017/81017 co-relation queries the response was YES. [2024-06-27 19:54:58,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 859 events. 477/859 cut-off events. For 81017/81017 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4117 event pairs, 47 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 7121. Up to 566 conditions per place. [2024-06-27 19:54:58,238 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 75 changer transitions 0/222 dead transitions. [2024-06-27 19:54:58,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 222 transitions, 3011 flow [2024-06-27 19:54:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 19:54:58,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:54:58,239 INFO L175 Difference]: Start difference. First operand has 219 places, 202 transitions, 2146 flow. Second operand 10 states and 135 transitions. [2024-06-27 19:54:58,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 222 transitions, 3011 flow [2024-06-27 19:54:58,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 222 transitions, 2842 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:58,385 INFO L231 Difference]: Finished difference. Result has 221 places, 204 transitions, 2172 flow [2024-06-27 19:54:58,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2172, PETRI_PLACES=221, PETRI_TRANSITIONS=204} [2024-06-27 19:54:58,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 19:54:58,385 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 204 transitions, 2172 flow [2024-06-27 19:54:58,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:58,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:58,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:58,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:54:58,386 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)] === [2024-06-27 19:54:58,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447691, now seen corresponding path program 10 times [2024-06-27 19:54:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:58,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342041045] [2024-06-27 19:54:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342041045] [2024-06-27 19:54:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342041045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:59,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:59,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094006661] [2024-06-27 19:54:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:59,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:59,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:54:59,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 204 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:59,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:59,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:54:59,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:59,774 INFO L124 PetriNetUnfolderBase]: 473/853 cut-off events. [2024-06-27 19:54:59,774 INFO L125 PetriNetUnfolderBase]: For 78153/78153 co-relation queries the response was YES. [2024-06-27 19:54:59,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 853 events. 473/853 cut-off events. For 78153/78153 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4088 event pairs, 46 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 6973. Up to 563 conditions per place. [2024-06-27 19:54:59,781 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 73 changer transitions 0/222 dead transitions. [2024-06-27 19:54:59,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 222 transitions, 2871 flow [2024-06-27 19:54:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 19:54:59,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:54:59,782 INFO L175 Difference]: Start difference. First operand has 221 places, 204 transitions, 2172 flow. Second operand 10 states and 135 transitions. [2024-06-27 19:54:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 222 transitions, 2871 flow [2024-06-27 19:54:59,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 2653 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:59,947 INFO L231 Difference]: Finished difference. Result has 223 places, 204 transitions, 2106 flow [2024-06-27 19:54:59,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2106, PETRI_PLACES=223, PETRI_TRANSITIONS=204} [2024-06-27 19:54:59,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-27 19:54:59,948 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 204 transitions, 2106 flow [2024-06-27 19:54:59,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:59,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:59,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:59,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:54:59,949 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)] === [2024-06-27 19:54:59,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1264865311, now seen corresponding path program 11 times [2024-06-27 19:54:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722438045] [2024-06-27 19:54:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:00,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:00,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722438045] [2024-06-27 19:55:00,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722438045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:00,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:00,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:00,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069424502] [2024-06-27 19:55:00,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:00,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:00,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:00,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:00,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 204 transitions, 2106 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:00,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:00,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:00,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:01,082 INFO L124 PetriNetUnfolderBase]: 509/912 cut-off events. [2024-06-27 19:55:01,082 INFO L125 PetriNetUnfolderBase]: For 96094/96094 co-relation queries the response was YES. [2024-06-27 19:55:01,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7949 conditions, 912 events. 509/912 cut-off events. For 96094/96094 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4427 event pairs, 55 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 7839. Up to 437 conditions per place. [2024-06-27 19:55:01,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 102 changer transitions 0/231 dead transitions. [2024-06-27 19:55:01,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 231 transitions, 3314 flow [2024-06-27 19:55:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 19:55:01,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:55:01,091 INFO L175 Difference]: Start difference. First operand has 223 places, 204 transitions, 2106 flow. Second operand 10 states and 140 transitions. [2024-06-27 19:55:01,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 231 transitions, 3314 flow [2024-06-27 19:55:01,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 231 transitions, 3120 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:01,282 INFO L231 Difference]: Finished difference. Result has 224 places, 214 transitions, 2418 flow [2024-06-27 19:55:01,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2418, PETRI_PLACES=224, PETRI_TRANSITIONS=214} [2024-06-27 19:55:01,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-27 19:55:01,283 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 214 transitions, 2418 flow [2024-06-27 19:55:01,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:01,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:01,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:55:01,283 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)] === [2024-06-27 19:55:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 2 times [2024-06-27 19:55:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149013073] [2024-06-27 19:55:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:02,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149013073] [2024-06-27 19:55:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149013073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:02,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:02,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145118943] [2024-06-27 19:55:02,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:02,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:02,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:55:02,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 214 transitions, 2418 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:02,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:02,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:55:02,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:02,939 INFO L124 PetriNetUnfolderBase]: 478/881 cut-off events. [2024-06-27 19:55:02,939 INFO L125 PetriNetUnfolderBase]: For 101333/101334 co-relation queries the response was YES. [2024-06-27 19:55:02,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8079 conditions, 881 events. 478/881 cut-off events. For 101333/101334 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4429 event pairs, 42 based on Foata normal form. 3/880 useless extension candidates. Maximal degree in co-relation 7967. Up to 712 conditions per place. [2024-06-27 19:55:02,946 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 31 changer transitions 0/227 dead transitions. [2024-06-27 19:55:02,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 227 transitions, 2880 flow [2024-06-27 19:55:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 19:55:02,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 19:55:02,948 INFO L175 Difference]: Start difference. First operand has 224 places, 214 transitions, 2418 flow. Second operand 10 states and 129 transitions. [2024-06-27 19:55:02,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 227 transitions, 2880 flow [2024-06-27 19:55:03,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 227 transitions, 2770 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 19:55:03,159 INFO L231 Difference]: Finished difference. Result has 232 places, 217 transitions, 2427 flow [2024-06-27 19:55:03,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2427, PETRI_PLACES=232, PETRI_TRANSITIONS=217} [2024-06-27 19:55:03,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-27 19:55:03,160 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 217 transitions, 2427 flow [2024-06-27 19:55:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:03,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:03,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:03,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:55:03,161 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)] === [2024-06-27 19:55:03,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1255918091, now seen corresponding path program 3 times [2024-06-27 19:55:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798851116] [2024-06-27 19:55:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:04,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:04,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798851116] [2024-06-27 19:55:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798851116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:04,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655306664] [2024-06-27 19:55:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:04,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:04,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:04,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:55:04,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 217 transitions, 2427 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:04,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:04,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:55:04,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:04,769 INFO L124 PetriNetUnfolderBase]: 487/894 cut-off events. [2024-06-27 19:55:04,769 INFO L125 PetriNetUnfolderBase]: For 102873/102874 co-relation queries the response was YES. [2024-06-27 19:55:04,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 894 events. 487/894 cut-off events. For 102873/102874 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4487 event pairs, 43 based on Foata normal form. 3/893 useless extension candidates. Maximal degree in co-relation 8000. Up to 764 conditions per place. [2024-06-27 19:55:04,777 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 15 changer transitions 0/230 dead transitions. [2024-06-27 19:55:04,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 230 transitions, 2888 flow [2024-06-27 19:55:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:55:04,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:55:04,784 INFO L175 Difference]: Start difference. First operand has 232 places, 217 transitions, 2427 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:55:04,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 230 transitions, 2888 flow [2024-06-27 19:55:04,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 2796 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:04,997 INFO L231 Difference]: Finished difference. Result has 236 places, 220 transitions, 2417 flow [2024-06-27 19:55:04,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2417, PETRI_PLACES=236, PETRI_TRANSITIONS=220} [2024-06-27 19:55:04,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-27 19:55:04,998 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 220 transitions, 2417 flow [2024-06-27 19:55:04,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:04,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:04,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:04,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:55:04,999 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)] === [2024-06-27 19:55:04,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 4 times [2024-06-27 19:55:05,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028069294] [2024-06-27 19:55:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028069294] [2024-06-27 19:55:06,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028069294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:06,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:06,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582623855] [2024-06-27 19:55:06,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:06,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:06,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:55:06,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 220 transitions, 2417 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:06,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:06,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:55:06,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:06,857 INFO L124 PetriNetUnfolderBase]: 490/903 cut-off events. [2024-06-27 19:55:06,857 INFO L125 PetriNetUnfolderBase]: For 105181/105182 co-relation queries the response was YES. [2024-06-27 19:55:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8157 conditions, 903 events. 490/903 cut-off events. For 105181/105182 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4545 event pairs, 44 based on Foata normal form. 3/902 useless extension candidates. Maximal degree in co-relation 8040. Up to 755 conditions per place. [2024-06-27 19:55:06,866 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 21 changer transitions 0/231 dead transitions. [2024-06-27 19:55:06,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 231 transitions, 2865 flow [2024-06-27 19:55:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:55:06,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:55:06,867 INFO L175 Difference]: Start difference. First operand has 236 places, 220 transitions, 2417 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:55:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 231 transitions, 2865 flow [2024-06-27 19:55:07,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 231 transitions, 2818 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:07,085 INFO L231 Difference]: Finished difference. Result has 239 places, 221 transitions, 2442 flow [2024-06-27 19:55:07,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2442, PETRI_PLACES=239, PETRI_TRANSITIONS=221} [2024-06-27 19:55:07,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-27 19:55:07,086 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 221 transitions, 2442 flow [2024-06-27 19:55:07,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:07,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:07,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:07,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:55:07,086 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)] === [2024-06-27 19:55:07,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash -439170941, now seen corresponding path program 5 times [2024-06-27 19:55:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:07,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881541297] [2024-06-27 19:55:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881541297] [2024-06-27 19:55:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881541297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:08,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479401762] [2024-06-27 19:55:08,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:08,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:08,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:55:08,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 221 transitions, 2442 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:08,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:08,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:55:08,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:08,663 INFO L124 PetriNetUnfolderBase]: 494/909 cut-off events. [2024-06-27 19:55:08,663 INFO L125 PetriNetUnfolderBase]: For 108237/108238 co-relation queries the response was YES. [2024-06-27 19:55:08,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 909 events. 494/909 cut-off events. For 108237/108238 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4588 event pairs, 46 based on Foata normal form. 3/908 useless extension candidates. Maximal degree in co-relation 8112. Up to 750 conditions per place. [2024-06-27 19:55:08,672 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2024-06-27 19:55:08,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 235 transitions, 3058 flow [2024-06-27 19:55:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:55:08,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:55:08,673 INFO L175 Difference]: Start difference. First operand has 239 places, 221 transitions, 2442 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:55:08,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 235 transitions, 3058 flow [2024-06-27 19:55:08,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 235 transitions, 2996 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:08,923 INFO L231 Difference]: Finished difference. Result has 242 places, 222 transitions, 2452 flow [2024-06-27 19:55:08,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2452, PETRI_PLACES=242, PETRI_TRANSITIONS=222} [2024-06-27 19:55:08,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-27 19:55:08,923 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 222 transitions, 2452 flow [2024-06-27 19:55:08,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:08,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:08,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:55:08,924 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)] === [2024-06-27 19:55:08,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 12 times [2024-06-27 19:55:08,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:08,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388448295] [2024-06-27 19:55:08,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:08,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:09,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:09,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388448295] [2024-06-27 19:55:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388448295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:09,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:09,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:09,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254246639] [2024-06-27 19:55:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:09,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:09,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 222 transitions, 2452 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:09,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:09,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:09,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:10,150 INFO L124 PetriNetUnfolderBase]: 554/991 cut-off events. [2024-06-27 19:55:10,152 INFO L125 PetriNetUnfolderBase]: For 121324/121324 co-relation queries the response was YES. [2024-06-27 19:55:10,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 991 events. 554/991 cut-off events. For 121324/121324 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4907 event pairs, 59 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 9060. Up to 749 conditions per place. [2024-06-27 19:55:10,163 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 55 changer transitions 0/245 dead transitions. [2024-06-27 19:55:10,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 245 transitions, 3632 flow [2024-06-27 19:55:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 19:55:10,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 19:55:10,165 INFO L175 Difference]: Start difference. First operand has 242 places, 222 transitions, 2452 flow. Second operand 10 states and 139 transitions. [2024-06-27 19:55:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 245 transitions, 3632 flow [2024-06-27 19:55:10,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 3574 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:10,491 INFO L231 Difference]: Finished difference. Result has 244 places, 228 transitions, 2647 flow [2024-06-27 19:55:10,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2647, PETRI_PLACES=244, PETRI_TRANSITIONS=228} [2024-06-27 19:55:10,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-27 19:55:10,492 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 228 transitions, 2647 flow [2024-06-27 19:55:10,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:10,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:10,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:10,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:55:10,493 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)] === [2024-06-27 19:55:10,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 608707843, now seen corresponding path program 13 times [2024-06-27 19:55:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941647768] [2024-06-27 19:55:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941647768] [2024-06-27 19:55:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941647768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936088350] [2024-06-27 19:55:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:11,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:11,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:11,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:11,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 228 transitions, 2647 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:11,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:11,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:11,794 INFO L124 PetriNetUnfolderBase]: 550/985 cut-off events. [2024-06-27 19:55:11,794 INFO L125 PetriNetUnfolderBase]: For 118717/118717 co-relation queries the response was YES. [2024-06-27 19:55:11,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 985 events. 550/985 cut-off events. For 118717/118717 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4885 event pairs, 58 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 8938. Up to 746 conditions per place. [2024-06-27 19:55:11,804 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 56 changer transitions 0/244 dead transitions. [2024-06-27 19:55:11,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 244 transitions, 3535 flow [2024-06-27 19:55:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 19:55:11,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 19:55:11,805 INFO L175 Difference]: Start difference. First operand has 244 places, 228 transitions, 2647 flow. Second operand 10 states and 137 transitions. [2024-06-27 19:55:11,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 244 transitions, 3535 flow [2024-06-27 19:55:12,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 3154 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:12,063 INFO L231 Difference]: Finished difference. Result has 244 places, 228 transitions, 2383 flow [2024-06-27 19:55:12,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2383, PETRI_PLACES=244, PETRI_TRANSITIONS=228} [2024-06-27 19:55:12,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-27 19:55:12,064 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 228 transitions, 2383 flow [2024-06-27 19:55:12,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:12,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:12,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:55:12,065 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)] === [2024-06-27 19:55:12,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -450599122, now seen corresponding path program 3 times [2024-06-27 19:55:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737587302] [2024-06-27 19:55:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737587302] [2024-06-27 19:55:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737587302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:13,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:13,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:13,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304218059] [2024-06-27 19:55:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:13,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:13,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:13,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:13,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 228 transitions, 2383 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:13,819 INFO L124 PetriNetUnfolderBase]: 558/997 cut-off events. [2024-06-27 19:55:13,819 INFO L125 PetriNetUnfolderBase]: For 120199/120199 co-relation queries the response was YES. [2024-06-27 19:55:13,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8751 conditions, 997 events. 558/997 cut-off events. For 120199/120199 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4947 event pairs, 53 based on Foata normal form. 1/996 useless extension candidates. Maximal degree in co-relation 8635. Up to 932 conditions per place. [2024-06-27 19:55:13,828 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2024-06-27 19:55:13,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 242 transitions, 3109 flow [2024-06-27 19:55:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:55:13,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:55:13,829 INFO L175 Difference]: Start difference. First operand has 244 places, 228 transitions, 2383 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:55:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 242 transitions, 3109 flow [2024-06-27 19:55:14,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 242 transitions, 2999 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:14,091 INFO L231 Difference]: Finished difference. Result has 246 places, 232 transitions, 2388 flow [2024-06-27 19:55:14,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=246, PETRI_TRANSITIONS=232} [2024-06-27 19:55:14,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-27 19:55:14,092 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 232 transitions, 2388 flow [2024-06-27 19:55:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:14,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:14,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:14,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:55:14,092 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)] === [2024-06-27 19:55:14,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash -764567401, now seen corresponding path program 14 times [2024-06-27 19:55:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8023257] [2024-06-27 19:55:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:15,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8023257] [2024-06-27 19:55:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8023257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:15,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17484775] [2024-06-27 19:55:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:15,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:15,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 232 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:15,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:15,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:15,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:15,364 INFO L124 PetriNetUnfolderBase]: 566/1013 cut-off events. [2024-06-27 19:55:15,364 INFO L125 PetriNetUnfolderBase]: For 126461/126461 co-relation queries the response was YES. [2024-06-27 19:55:15,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8911 conditions, 1013 events. 566/1013 cut-off events. For 126461/126461 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5067 event pairs, 55 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 8794. Up to 647 conditions per place. [2024-06-27 19:55:15,374 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 91 changer transitions 0/275 dead transitions. [2024-06-27 19:55:15,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 275 transitions, 3838 flow [2024-06-27 19:55:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 19:55:15,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:55:15,375 INFO L175 Difference]: Start difference. First operand has 246 places, 232 transitions, 2388 flow. Second operand 10 states and 135 transitions. [2024-06-27 19:55:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 275 transitions, 3838 flow [2024-06-27 19:55:15,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 275 transitions, 3798 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:15,637 INFO L231 Difference]: Finished difference. Result has 253 places, 258 transitions, 3008 flow [2024-06-27 19:55:15,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3008, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2024-06-27 19:55:15,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-27 19:55:15,638 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 3008 flow [2024-06-27 19:55:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:15,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:15,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:15,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:55:15,638 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)] === [2024-06-27 19:55:15,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 8 times [2024-06-27 19:55:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:15,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964918928] [2024-06-27 19:55:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:15,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:16,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964918928] [2024-06-27 19:55:16,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964918928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:16,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291216770] [2024-06-27 19:55:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:16,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:16,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 3008 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:16,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:16,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:16,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:17,041 INFO L124 PetriNetUnfolderBase]: 574/1030 cut-off events. [2024-06-27 19:55:17,042 INFO L125 PetriNetUnfolderBase]: For 135202/135202 co-relation queries the response was YES. [2024-06-27 19:55:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 1030 events. 574/1030 cut-off events. For 135202/135202 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5197 event pairs, 58 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 9573. Up to 851 conditions per place. [2024-06-27 19:55:17,051 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-27 19:55:17,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 273 transitions, 3882 flow [2024-06-27 19:55:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 19:55:17,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 19:55:17,052 INFO L175 Difference]: Start difference. First operand has 253 places, 258 transitions, 3008 flow. Second operand 10 states and 129 transitions. [2024-06-27 19:55:17,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 273 transitions, 3882 flow [2024-06-27 19:55:17,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 273 transitions, 3782 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:17,374 INFO L231 Difference]: Finished difference. Result has 258 places, 262 transitions, 3153 flow [2024-06-27 19:55:17,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3153, PETRI_PLACES=258, PETRI_TRANSITIONS=262} [2024-06-27 19:55:17,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-27 19:55:17,374 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 262 transitions, 3153 flow [2024-06-27 19:55:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:17,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:17,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:17,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:55:17,375 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)] === [2024-06-27 19:55:17,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469309, now seen corresponding path program 15 times [2024-06-27 19:55:17,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:17,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826903939] [2024-06-27 19:55:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:17,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826903939] [2024-06-27 19:55:18,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826903939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:18,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:18,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677677] [2024-06-27 19:55:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:18,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 262 transitions, 3153 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:18,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:18,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:18,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:18,589 INFO L124 PetriNetUnfolderBase]: 570/1024 cut-off events. [2024-06-27 19:55:18,590 INFO L125 PetriNetUnfolderBase]: For 134818/134818 co-relation queries the response was YES. [2024-06-27 19:55:18,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1024 events. 570/1024 cut-off events. For 134818/134818 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5168 event pairs, 60 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 9374. Up to 782 conditions per place. [2024-06-27 19:55:18,600 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 63 changer transitions 0/276 dead transitions. [2024-06-27 19:55:18,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 276 transitions, 3942 flow [2024-06-27 19:55:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 19:55:18,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 19:55:18,602 INFO L175 Difference]: Start difference. First operand has 258 places, 262 transitions, 3153 flow. Second operand 10 states and 135 transitions. [2024-06-27 19:55:18,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 276 transitions, 3942 flow [2024-06-27 19:55:18,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 3785 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:18,883 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 3128 flow [2024-06-27 19:55:18,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3128, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-06-27 19:55:18,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-27 19:55:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 3128 flow [2024-06-27 19:55:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:18,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:18,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:18,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:55:18,885 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)] === [2024-06-27 19:55:18,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -439557232, now seen corresponding path program 4 times [2024-06-27 19:55:18,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670416425] [2024-06-27 19:55:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:18,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670416425] [2024-06-27 19:55:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670416425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:19,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:19,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881762569] [2024-06-27 19:55:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:19,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:20,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:20,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 3128 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:20,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:20,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:20,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:20,529 INFO L124 PetriNetUnfolderBase]: 566/1017 cut-off events. [2024-06-27 19:55:20,529 INFO L125 PetriNetUnfolderBase]: For 130410/130410 co-relation queries the response was YES. [2024-06-27 19:55:20,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9342 conditions, 1017 events. 566/1017 cut-off events. For 130410/130410 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5113 event pairs, 52 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 9217. Up to 938 conditions per place. [2024-06-27 19:55:20,540 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 26 changer transitions 0/273 dead transitions. [2024-06-27 19:55:20,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 273 transitions, 3692 flow [2024-06-27 19:55:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:55:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:55:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:55:20,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:55:20,542 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 3128 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:55:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 273 transitions, 3692 flow [2024-06-27 19:55:20,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 273 transitions, 3519 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:20,844 INFO L231 Difference]: Finished difference. Result has 265 places, 262 transitions, 3018 flow [2024-06-27 19:55:20,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3018, PETRI_PLACES=265, PETRI_TRANSITIONS=262} [2024-06-27 19:55:20,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 19:55:20,845 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 262 transitions, 3018 flow [2024-06-27 19:55:20,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:20,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:20,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:20,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:55:20,846 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)] === [2024-06-27 19:55:20,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash -439556891, now seen corresponding path program 6 times [2024-06-27 19:55:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101537809] [2024-06-27 19:55:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101537809] [2024-06-27 19:55:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101537809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:22,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440002731] [2024-06-27 19:55:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:22,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:22,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 19:55:22,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 262 transitions, 3018 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:22,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:22,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 19:55:22,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:22,702 INFO L124 PetriNetUnfolderBase]: 529/973 cut-off events. [2024-06-27 19:55:22,702 INFO L125 PetriNetUnfolderBase]: For 127845/127846 co-relation queries the response was YES. [2024-06-27 19:55:22,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8831 conditions, 973 events. 529/973 cut-off events. For 127845/127846 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5016 event pairs, 46 based on Foata normal form. 3/972 useless extension candidates. Maximal degree in co-relation 8705. Up to 822 conditions per place. [2024-06-27 19:55:22,712 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 220 selfloop transitions, 20 changer transitions 0/273 dead transitions. [2024-06-27 19:55:22,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 273 transitions, 3522 flow [2024-06-27 19:55:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:55:22,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:55:22,713 INFO L175 Difference]: Start difference. First operand has 265 places, 262 transitions, 3018 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:55:22,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 273 transitions, 3522 flow [2024-06-27 19:55:22,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 273 transitions, 3410 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-27 19:55:22,991 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 2952 flow [2024-06-27 19:55:22,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-06-27 19:55:22,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-27 19:55:22,991 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 2952 flow [2024-06-27 19:55:22,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-27 19:55:22,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:22,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:22,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:55:22,992 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)] === [2024-06-27 19:55:22,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash 601558003, now seen corresponding path program 16 times [2024-06-27 19:55:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645344313] [2024-06-27 19:55:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:22,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:23,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645344313] [2024-06-27 19:55:23,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645344313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089670402] [2024-06-27 19:55:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:23,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:24,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:24,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 2952 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:24,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:24,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:24,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:24,349 INFO L124 PetriNetUnfolderBase]: 579/1039 cut-off events. [2024-06-27 19:55:24,350 INFO L125 PetriNetUnfolderBase]: For 133262/133262 co-relation queries the response was YES. [2024-06-27 19:55:24,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 1039 events. 579/1039 cut-off events. For 133262/133262 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5267 event pairs, 58 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 9251. Up to 837 conditions per place. [2024-06-27 19:55:24,360 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 51 changer transitions 0/283 dead transitions. [2024-06-27 19:55:24,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 4051 flow [2024-06-27 19:55:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 19:55:24,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 19:55:24,361 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 2952 flow. Second operand 10 states and 133 transitions. [2024-06-27 19:55:24,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 4051 flow [2024-06-27 19:55:24,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 283 transitions, 3974 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:55:24,728 INFO L231 Difference]: Finished difference. Result has 261 places, 268 transitions, 3109 flow [2024-06-27 19:55:24,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3109, PETRI_PLACES=261, PETRI_TRANSITIONS=268} [2024-06-27 19:55:24,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 19:55:24,729 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 268 transitions, 3109 flow [2024-06-27 19:55:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:24,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:24,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:55:24,730 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)] === [2024-06-27 19:55:24,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1521632948, now seen corresponding path program 9 times [2024-06-27 19:55:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490278207] [2024-06-27 19:55:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490278207] [2024-06-27 19:55:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490278207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537792045] [2024-06-27 19:55:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:26,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:26,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 268 transitions, 3109 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:26,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:26,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:26,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:26,465 INFO L124 PetriNetUnfolderBase]: 582/1046 cut-off events. [2024-06-27 19:55:26,466 INFO L125 PetriNetUnfolderBase]: For 130749/130749 co-relation queries the response was YES. [2024-06-27 19:55:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 1046 events. 582/1046 cut-off events. For 130749/130749 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5325 event pairs, 56 based on Foata normal form. 1/1041 useless extension candidates. Maximal degree in co-relation 9395. Up to 876 conditions per place. [2024-06-27 19:55:26,475 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-27 19:55:26,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 3953 flow [2024-06-27 19:55:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:55:26,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:55:26,476 INFO L175 Difference]: Start difference. First operand has 261 places, 268 transitions, 3109 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:55:26,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 3953 flow [2024-06-27 19:55:26,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 283 transitions, 3816 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:26,798 INFO L231 Difference]: Finished difference. Result has 265 places, 270 transitions, 3137 flow [2024-06-27 19:55:26,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3137, PETRI_PLACES=265, PETRI_TRANSITIONS=270} [2024-06-27 19:55:26,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 19:55:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 270 transitions, 3137 flow [2024-06-27 19:55:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:26,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:26,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:26,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:55:26,799 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)] === [2024-06-27 19:55:26,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878619, now seen corresponding path program 17 times [2024-06-27 19:55:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100600061] [2024-06-27 19:55:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100600061] [2024-06-27 19:55:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100600061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:27,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:27,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011255511] [2024-06-27 19:55:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:27,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:27,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:27,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 270 transitions, 3137 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:27,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:27,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:27,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:28,085 INFO L124 PetriNetUnfolderBase]: 578/1040 cut-off events. [2024-06-27 19:55:28,086 INFO L125 PetriNetUnfolderBase]: For 129934/129934 co-relation queries the response was YES. [2024-06-27 19:55:28,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1040 events. 578/1040 cut-off events. For 129934/129934 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5301 event pairs, 56 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 9165. Up to 839 conditions per place. [2024-06-27 19:55:28,095 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 52 changer transitions 0/283 dead transitions. [2024-06-27 19:55:28,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 283 transitions, 3929 flow [2024-06-27 19:55:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 19:55:28,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 19:55:28,096 INFO L175 Difference]: Start difference. First operand has 265 places, 270 transitions, 3137 flow. Second operand 10 states and 131 transitions. [2024-06-27 19:55:28,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 283 transitions, 3929 flow [2024-06-27 19:55:28,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 283 transitions, 3743 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:28,438 INFO L231 Difference]: Finished difference. Result has 266 places, 270 transitions, 3061 flow [2024-06-27 19:55:28,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3061, PETRI_PLACES=266, PETRI_TRANSITIONS=270} [2024-06-27 19:55:28,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-27 19:55:28,439 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 270 transitions, 3061 flow [2024-06-27 19:55:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:28,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:28,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:55:28,440 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)] === [2024-06-27 19:55:28,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1521834758, now seen corresponding path program 10 times [2024-06-27 19:55:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664899071] [2024-06-27 19:55:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664899071] [2024-06-27 19:55:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664899071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:29,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22526101] [2024-06-27 19:55:29,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:29,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:29,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:29,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 270 transitions, 3061 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:29,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:29,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:29,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:30,041 INFO L124 PetriNetUnfolderBase]: 576/1037 cut-off events. [2024-06-27 19:55:30,041 INFO L125 PetriNetUnfolderBase]: For 125016/125016 co-relation queries the response was YES. [2024-06-27 19:55:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9139 conditions, 1037 events. 576/1037 cut-off events. For 125016/125016 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5283 event pairs, 55 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 9010. Up to 877 conditions per place. [2024-06-27 19:55:30,052 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 42 changer transitions 0/282 dead transitions. [2024-06-27 19:55:30,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 3665 flow [2024-06-27 19:55:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:55:30,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:55:30,053 INFO L175 Difference]: Start difference. First operand has 266 places, 270 transitions, 3061 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:55:30,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 3665 flow [2024-06-27 19:55:30,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 282 transitions, 3493 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:30,362 INFO L231 Difference]: Finished difference. Result has 268 places, 270 transitions, 2978 flow [2024-06-27 19:55:30,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2978, PETRI_PLACES=268, PETRI_TRANSITIONS=270} [2024-06-27 19:55:30,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-27 19:55:30,369 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 270 transitions, 2978 flow [2024-06-27 19:55:30,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:30,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:30,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:55:30,370 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)] === [2024-06-27 19:55:30,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -755370631, now seen corresponding path program 18 times [2024-06-27 19:55:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:30,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246250398] [2024-06-27 19:55:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246250398] [2024-06-27 19:55:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246250398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779518527] [2024-06-27 19:55:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:31,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:31,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 270 transitions, 2978 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:31,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:31,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:31,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:31,690 INFO L124 PetriNetUnfolderBase]: 574/1033 cut-off events. [2024-06-27 19:55:31,690 INFO L125 PetriNetUnfolderBase]: For 123388/123388 co-relation queries the response was YES. [2024-06-27 19:55:31,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 1033 events. 574/1033 cut-off events. For 123388/123388 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5239 event pairs, 51 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 8844. Up to 967 conditions per place. [2024-06-27 19:55:31,699 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 260 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-06-27 19:55:31,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 281 transitions, 3578 flow [2024-06-27 19:55:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:55:31,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:55:31,701 INFO L175 Difference]: Start difference. First operand has 268 places, 270 transitions, 2978 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:55:31,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 281 transitions, 3578 flow [2024-06-27 19:55:32,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 281 transitions, 3451 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:32,022 INFO L231 Difference]: Finished difference. Result has 269 places, 272 transitions, 2918 flow [2024-06-27 19:55:32,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2918, PETRI_PLACES=269, PETRI_TRANSITIONS=272} [2024-06-27 19:55:32,022 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-27 19:55:32,023 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 272 transitions, 2918 flow [2024-06-27 19:55:32,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:32,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:32,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:32,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:55:32,023 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)] === [2024-06-27 19:55:32,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash -763385549, now seen corresponding path program 19 times [2024-06-27 19:55:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:32,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789488521] [2024-06-27 19:55:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:32,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789488521] [2024-06-27 19:55:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789488521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:32,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:32,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490532343] [2024-06-27 19:55:32,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:32,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:32,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 272 transitions, 2918 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:32,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:32,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:32,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:33,247 INFO L124 PetriNetUnfolderBase]: 575/1036 cut-off events. [2024-06-27 19:55:33,247 INFO L125 PetriNetUnfolderBase]: For 125720/125720 co-relation queries the response was YES. [2024-06-27 19:55:33,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 1036 events. 575/1036 cut-off events. For 125720/125720 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5272 event pairs, 57 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 8702. Up to 526 conditions per place. [2024-06-27 19:55:33,257 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 149 changer transitions 0/288 dead transitions. [2024-06-27 19:55:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 288 transitions, 3937 flow [2024-06-27 19:55:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 19:55:33,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 19:55:33,261 INFO L175 Difference]: Start difference. First operand has 269 places, 272 transitions, 2918 flow. Second operand 10 states and 137 transitions. [2024-06-27 19:55:33,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 288 transitions, 3937 flow [2024-06-27 19:55:33,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 288 transitions, 3862 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:33,588 INFO L231 Difference]: Finished difference. Result has 271 places, 274 transitions, 3187 flow [2024-06-27 19:55:33,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3187, PETRI_PLACES=271, PETRI_TRANSITIONS=274} [2024-06-27 19:55:33,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-27 19:55:33,589 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 274 transitions, 3187 flow [2024-06-27 19:55:33,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:33,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:33,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:55:33,590 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)] === [2024-06-27 19:55:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 20 times [2024-06-27 19:55:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464565029] [2024-06-27 19:55:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464565029] [2024-06-27 19:55:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464565029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199191447] [2024-06-27 19:55:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:34,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 274 transitions, 3187 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:34,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:34,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:34,815 INFO L124 PetriNetUnfolderBase]: 567/1023 cut-off events. [2024-06-27 19:55:34,815 INFO L125 PetriNetUnfolderBase]: For 121570/121570 co-relation queries the response was YES. [2024-06-27 19:55:34,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8658 conditions, 1023 events. 567/1023 cut-off events. For 121570/121570 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5236 event pairs, 55 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 8526. Up to 855 conditions per place. [2024-06-27 19:55:34,826 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2024-06-27 19:55:34,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 285 transitions, 3794 flow [2024-06-27 19:55:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:55:34,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:55:34,827 INFO L175 Difference]: Start difference. First operand has 271 places, 274 transitions, 3187 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:55:34,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 285 transitions, 3794 flow [2024-06-27 19:55:35,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 285 transitions, 3407 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:35,139 INFO L231 Difference]: Finished difference. Result has 274 places, 274 transitions, 2892 flow [2024-06-27 19:55:35,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2892, PETRI_PLACES=274, PETRI_TRANSITIONS=274} [2024-06-27 19:55:35,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 19:55:35,140 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 274 transitions, 2892 flow [2024-06-27 19:55:35,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:35,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:35,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:35,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:55:35,140 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)] === [2024-06-27 19:55:35,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1265132438, now seen corresponding path program 11 times [2024-06-27 19:55:35,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:35,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221398356] [2024-06-27 19:55:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221398356] [2024-06-27 19:55:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221398356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:36,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930208272] [2024-06-27 19:55:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:36,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:36,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:36,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:36,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:36,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 274 transitions, 2892 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:36,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:36,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:36,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:36,480 INFO L124 PetriNetUnfolderBase]: 565/1020 cut-off events. [2024-06-27 19:55:36,480 INFO L125 PetriNetUnfolderBase]: For 107438/107438 co-relation queries the response was YES. [2024-06-27 19:55:36,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 1020 events. 565/1020 cut-off events. For 107438/107438 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5217 event pairs, 55 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 8106. Up to 764 conditions per place. [2024-06-27 19:55:36,490 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 79 changer transitions 0/285 dead transitions. [2024-06-27 19:55:36,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 285 transitions, 3552 flow [2024-06-27 19:55:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:55:36,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:55:36,491 INFO L175 Difference]: Start difference. First operand has 274 places, 274 transitions, 2892 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:55:36,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 285 transitions, 3552 flow [2024-06-27 19:55:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 285 transitions, 3447 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:36,765 INFO L231 Difference]: Finished difference. Result has 274 places, 276 transitions, 3030 flow [2024-06-27 19:55:36,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=274, PETRI_TRANSITIONS=276} [2024-06-27 19:55:36,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 19:55:36,765 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 276 transitions, 3030 flow [2024-06-27 19:55:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:36,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:55:36,766 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)] === [2024-06-27 19:55:36,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 192085279, now seen corresponding path program 1 times [2024-06-27 19:55:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955208261] [2024-06-27 19:55:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955208261] [2024-06-27 19:55:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955208261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:37,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:37,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815440145] [2024-06-27 19:55:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:37,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:37,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 276 transitions, 3030 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:37,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:37,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:37,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:37,863 INFO L124 PetriNetUnfolderBase]: 569/1025 cut-off events. [2024-06-27 19:55:37,863 INFO L125 PetriNetUnfolderBase]: For 114224/114224 co-relation queries the response was YES. [2024-06-27 19:55:37,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8408 conditions, 1025 events. 569/1025 cut-off events. For 114224/114224 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5230 event pairs, 20 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 8274. Up to 893 conditions per place. [2024-06-27 19:55:37,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 26 changer transitions 0/298 dead transitions. [2024-06-27 19:55:37,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 298 transitions, 3708 flow [2024-06-27 19:55:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:55:37,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:55:37,875 INFO L175 Difference]: Start difference. First operand has 274 places, 276 transitions, 3030 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:55:37,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 298 transitions, 3708 flow [2024-06-27 19:55:38,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 298 transitions, 3481 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:38,201 INFO L231 Difference]: Finished difference. Result has 276 places, 277 transitions, 2885 flow [2024-06-27 19:55:38,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2885, PETRI_PLACES=276, PETRI_TRANSITIONS=277} [2024-06-27 19:55:38,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-27 19:55:38,210 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 277 transitions, 2885 flow [2024-06-27 19:55:38,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:38,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:38,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:38,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:55:38,210 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)] === [2024-06-27 19:55:38,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1937840301, now seen corresponding path program 2 times [2024-06-27 19:55:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:38,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413727265] [2024-06-27 19:55:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:38,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:38,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413727265] [2024-06-27 19:55:38,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413727265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:38,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:38,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:38,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892728937] [2024-06-27 19:55:38,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:38,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:38,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:38,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 277 transitions, 2885 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:38,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:38,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:39,371 INFO L124 PetriNetUnfolderBase]: 580/1051 cut-off events. [2024-06-27 19:55:39,371 INFO L125 PetriNetUnfolderBase]: For 117557/117557 co-relation queries the response was YES. [2024-06-27 19:55:39,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8391 conditions, 1051 events. 580/1051 cut-off events. For 117557/117557 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5433 event pairs, 48 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 8256. Up to 928 conditions per place. [2024-06-27 19:55:39,381 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 27 changer transitions 0/300 dead transitions. [2024-06-27 19:55:39,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 300 transitions, 3614 flow [2024-06-27 19:55:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:55:39,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:55:39,382 INFO L175 Difference]: Start difference. First operand has 276 places, 277 transitions, 2885 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:55:39,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 300 transitions, 3614 flow [2024-06-27 19:55:39,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 300 transitions, 3532 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:39,771 INFO L231 Difference]: Finished difference. Result has 282 places, 285 transitions, 2969 flow [2024-06-27 19:55:39,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=282, PETRI_TRANSITIONS=285} [2024-06-27 19:55:39,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 19:55:39,772 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 285 transitions, 2969 flow [2024-06-27 19:55:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:39,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:39,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:39,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:55:39,772 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)] === [2024-06-27 19:55:39,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1822549131, now seen corresponding path program 3 times [2024-06-27 19:55:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:39,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443169585] [2024-06-27 19:55:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:40,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:40,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443169585] [2024-06-27 19:55:40,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443169585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:40,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:40,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:40,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952507263] [2024-06-27 19:55:40,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:40,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:40,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:40,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:40,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 285 transitions, 2969 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:40,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:40,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:41,091 INFO L124 PetriNetUnfolderBase]: 590/1071 cut-off events. [2024-06-27 19:55:41,091 INFO L125 PetriNetUnfolderBase]: For 120318/120318 co-relation queries the response was YES. [2024-06-27 19:55:41,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 1071 events. 590/1071 cut-off events. For 120318/120318 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5587 event pairs, 45 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 8388. Up to 960 conditions per place. [2024-06-27 19:55:41,103 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2024-06-27 19:55:41,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 304 transitions, 3694 flow [2024-06-27 19:55:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:55:41,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:55:41,104 INFO L175 Difference]: Start difference. First operand has 282 places, 285 transitions, 2969 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:55:41,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 304 transitions, 3694 flow [2024-06-27 19:55:41,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 304 transitions, 3624 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:55:41,437 INFO L231 Difference]: Finished difference. Result has 291 places, 290 transitions, 3045 flow [2024-06-27 19:55:41,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3045, PETRI_PLACES=291, PETRI_TRANSITIONS=290} [2024-06-27 19:55:41,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-27 19:55:41,437 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 290 transitions, 3045 flow [2024-06-27 19:55:41,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:41,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:41,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:41,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:55:41,438 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)] === [2024-06-27 19:55:41,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1678571359, now seen corresponding path program 1 times [2024-06-27 19:55:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540964525] [2024-06-27 19:55:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:42,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:42,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540964525] [2024-06-27 19:55:42,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540964525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:42,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:42,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:42,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648694780] [2024-06-27 19:55:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:42,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:42,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:42,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 290 transitions, 3045 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:42,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:42,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:42,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:42,859 INFO L124 PetriNetUnfolderBase]: 591/1074 cut-off events. [2024-06-27 19:55:42,860 INFO L125 PetriNetUnfolderBase]: For 118757/118757 co-relation queries the response was YES. [2024-06-27 19:55:42,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1074 events. 591/1074 cut-off events. For 118757/118757 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5641 event pairs, 34 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 8324. Up to 940 conditions per place. [2024-06-27 19:55:42,871 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 37 changer transitions 0/312 dead transitions. [2024-06-27 19:55:42,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 312 transitions, 3793 flow [2024-06-27 19:55:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:55:42,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:55:42,872 INFO L175 Difference]: Start difference. First operand has 291 places, 290 transitions, 3045 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:55:42,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 312 transitions, 3793 flow [2024-06-27 19:55:43,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 312 transitions, 3709 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:43,188 INFO L231 Difference]: Finished difference. Result has 296 places, 292 transitions, 3101 flow [2024-06-27 19:55:43,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3101, PETRI_PLACES=296, PETRI_TRANSITIONS=292} [2024-06-27 19:55:43,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-27 19:55:43,189 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 292 transitions, 3101 flow [2024-06-27 19:55:43,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:43,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:43,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:43,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:55:43,190 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)] === [2024-06-27 19:55:43,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 537729905, now seen corresponding path program 2 times [2024-06-27 19:55:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:43,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792239098] [2024-06-27 19:55:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:44,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792239098] [2024-06-27 19:55:44,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792239098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:44,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:44,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724252402] [2024-06-27 19:55:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:44,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:44,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:44,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 292 transitions, 3101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:44,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:44,557 INFO L124 PetriNetUnfolderBase]: 607/1099 cut-off events. [2024-06-27 19:55:44,558 INFO L125 PetriNetUnfolderBase]: For 128127/128127 co-relation queries the response was YES. [2024-06-27 19:55:44,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 1099 events. 607/1099 cut-off events. For 128127/128127 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5762 event pairs, 31 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 8876. Up to 936 conditions per place. [2024-06-27 19:55:44,570 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 44 changer transitions 0/318 dead transitions. [2024-06-27 19:55:44,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 318 transitions, 4137 flow [2024-06-27 19:55:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:55:44,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 19:55:44,571 INFO L175 Difference]: Start difference. First operand has 296 places, 292 transitions, 3101 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:55:44,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 318 transitions, 4137 flow [2024-06-27 19:55:45,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 318 transitions, 4007 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:45,059 INFO L231 Difference]: Finished difference. Result has 298 places, 297 transitions, 3200 flow [2024-06-27 19:55:45,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3200, PETRI_PLACES=298, PETRI_TRANSITIONS=297} [2024-06-27 19:55:45,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-27 19:55:45,059 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 297 transitions, 3200 flow [2024-06-27 19:55:45,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:45,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:45,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:45,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:55:45,060 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)] === [2024-06-27 19:55:45,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1822371191, now seen corresponding path program 3 times [2024-06-27 19:55:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156666672] [2024-06-27 19:55:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:45,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:46,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156666672] [2024-06-27 19:55:46,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156666672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:46,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:46,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333051044] [2024-06-27 19:55:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:46,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:46,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:46,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 297 transitions, 3200 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:46,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:46,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:46,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:47,015 INFO L124 PetriNetUnfolderBase]: 605/1096 cut-off events. [2024-06-27 19:55:47,016 INFO L125 PetriNetUnfolderBase]: For 124950/124950 co-relation queries the response was YES. [2024-06-27 19:55:47,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8926 conditions, 1096 events. 605/1096 cut-off events. For 124950/124950 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5756 event pairs, 27 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 8781. Up to 950 conditions per place. [2024-06-27 19:55:47,028 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 41 changer transitions 0/319 dead transitions. [2024-06-27 19:55:47,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 319 transitions, 4017 flow [2024-06-27 19:55:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:55:47,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:55:47,029 INFO L175 Difference]: Start difference. First operand has 298 places, 297 transitions, 3200 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:55:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 319 transitions, 4017 flow [2024-06-27 19:55:47,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 319 transitions, 3841 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:47,484 INFO L231 Difference]: Finished difference. Result has 304 places, 301 transitions, 3262 flow [2024-06-27 19:55:47,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=304, PETRI_TRANSITIONS=301} [2024-06-27 19:55:47,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-27 19:55:47,485 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 301 transitions, 3262 flow [2024-06-27 19:55:47,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:47,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:47,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:47,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:55:47,486 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)] === [2024-06-27 19:55:47,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:47,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1656909997, now seen corresponding path program 4 times [2024-06-27 19:55:47,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:47,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740290588] [2024-06-27 19:55:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740290588] [2024-06-27 19:55:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740290588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:48,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:48,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265732689] [2024-06-27 19:55:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:48,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:48,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 301 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:48,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:48,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:48,895 INFO L124 PetriNetUnfolderBase]: 609/1106 cut-off events. [2024-06-27 19:55:48,896 INFO L125 PetriNetUnfolderBase]: For 131965/131965 co-relation queries the response was YES. [2024-06-27 19:55:48,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 1106 events. 609/1106 cut-off events. For 131965/131965 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5822 event pairs, 31 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 8880. Up to 945 conditions per place. [2024-06-27 19:55:48,908 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 39 changer transitions 0/318 dead transitions. [2024-06-27 19:55:48,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3975 flow [2024-06-27 19:55:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:55:48,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:55:48,911 INFO L175 Difference]: Start difference. First operand has 304 places, 301 transitions, 3262 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:55:48,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3975 flow [2024-06-27 19:55:49,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 318 transitions, 3851 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:49,356 INFO L231 Difference]: Finished difference. Result has 308 places, 304 transitions, 3276 flow [2024-06-27 19:55:49,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3276, PETRI_PLACES=308, PETRI_TRANSITIONS=304} [2024-06-27 19:55:49,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-27 19:55:49,357 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 304 transitions, 3276 flow [2024-06-27 19:55:49,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:49,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:49,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:55:49,358 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)] === [2024-06-27 19:55:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash -554339337, now seen corresponding path program 4 times [2024-06-27 19:55:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189034205] [2024-06-27 19:55:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:50,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:50,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189034205] [2024-06-27 19:55:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189034205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645224019] [2024-06-27 19:55:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:50,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:50,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 304 transitions, 3276 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:50,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:50,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:50,935 INFO L124 PetriNetUnfolderBase]: 637/1158 cut-off events. [2024-06-27 19:55:50,935 INFO L125 PetriNetUnfolderBase]: For 155179/155179 co-relation queries the response was YES. [2024-06-27 19:55:50,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10098 conditions, 1158 events. 637/1158 cut-off events. For 155179/155179 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6184 event pairs, 40 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 9947. Up to 890 conditions per place. [2024-06-27 19:55:50,948 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 69 changer transitions 0/333 dead transitions. [2024-06-27 19:55:50,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 333 transitions, 4884 flow [2024-06-27 19:55:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:55:50,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:55:50,949 INFO L175 Difference]: Start difference. First operand has 308 places, 304 transitions, 3276 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:55:50,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 333 transitions, 4884 flow [2024-06-27 19:55:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 333 transitions, 4778 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:51,396 INFO L231 Difference]: Finished difference. Result has 313 places, 313 transitions, 3597 flow [2024-06-27 19:55:51,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3597, PETRI_PLACES=313, PETRI_TRANSITIONS=313} [2024-06-27 19:55:51,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-27 19:55:51,396 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 313 transitions, 3597 flow [2024-06-27 19:55:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:51,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:51,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:51,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:55:51,397 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)] === [2024-06-27 19:55:51,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 5 times [2024-06-27 19:55:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:51,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852316288] [2024-06-27 19:55:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:51,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:52,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:52,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852316288] [2024-06-27 19:55:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852316288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:52,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895437064] [2024-06-27 19:55:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:52,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:52,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:52,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:52,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 313 transitions, 3597 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:52,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:52,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:52,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:52,828 INFO L124 PetriNetUnfolderBase]: 648/1180 cut-off events. [2024-06-27 19:55:52,828 INFO L125 PetriNetUnfolderBase]: For 170391/170391 co-relation queries the response was YES. [2024-06-27 19:55:52,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10583 conditions, 1180 events. 648/1180 cut-off events. For 170391/170391 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6345 event pairs, 31 based on Foata normal form. 2/1179 useless extension candidates. Maximal degree in co-relation 10430. Up to 902 conditions per place. [2024-06-27 19:55:52,842 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 70 changer transitions 0/339 dead transitions. [2024-06-27 19:55:52,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 339 transitions, 5133 flow [2024-06-27 19:55:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 19:55:52,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 19:55:52,843 INFO L175 Difference]: Start difference. First operand has 313 places, 313 transitions, 3597 flow. Second operand 11 states and 147 transitions. [2024-06-27 19:55:52,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 339 transitions, 5133 flow [2024-06-27 19:55:53,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 339 transitions, 4962 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:53,375 INFO L231 Difference]: Finished difference. Result has 319 places, 318 transitions, 3728 flow [2024-06-27 19:55:53,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=319, PETRI_TRANSITIONS=318} [2024-06-27 19:55:53,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-27 19:55:53,375 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 318 transitions, 3728 flow [2024-06-27 19:55:53,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:53,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:53,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:53,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:55:53,376 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)] === [2024-06-27 19:55:53,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1390974815, now seen corresponding path program 6 times [2024-06-27 19:55:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:53,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023235440] [2024-06-27 19:55:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:53,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:54,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023235440] [2024-06-27 19:55:54,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023235440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:54,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:54,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795036966] [2024-06-27 19:55:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:54,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:54,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:54,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 318 transitions, 3728 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:54,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:54,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:54,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:54,925 INFO L124 PetriNetUnfolderBase]: 646/1177 cut-off events. [2024-06-27 19:55:54,925 INFO L125 PetriNetUnfolderBase]: For 161674/161674 co-relation queries the response was YES. [2024-06-27 19:55:54,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10432 conditions, 1177 events. 646/1177 cut-off events. For 161674/161674 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6317 event pairs, 29 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 10277. Up to 957 conditions per place. [2024-06-27 19:55:54,939 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2024-06-27 19:55:54,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 339 transitions, 4825 flow [2024-06-27 19:55:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:55:54,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 19:55:54,940 INFO L175 Difference]: Start difference. First operand has 319 places, 318 transitions, 3728 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:55:54,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 339 transitions, 4825 flow [2024-06-27 19:55:55,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 339 transitions, 4616 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:55,486 INFO L231 Difference]: Finished difference. Result has 324 places, 324 transitions, 3872 flow [2024-06-27 19:55:55,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3872, PETRI_PLACES=324, PETRI_TRANSITIONS=324} [2024-06-27 19:55:55,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-27 19:55:55,486 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 324 transitions, 3872 flow [2024-06-27 19:55:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:55,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:55,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:55:55,487 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)] === [2024-06-27 19:55:55,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -554093259, now seen corresponding path program 1 times [2024-06-27 19:55:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185039885] [2024-06-27 19:55:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:56,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185039885] [2024-06-27 19:55:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185039885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:56,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483276171] [2024-06-27 19:55:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:56,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:56,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 324 transitions, 3872 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:56,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:56,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:56,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:57,065 INFO L124 PetriNetUnfolderBase]: 650/1185 cut-off events. [2024-06-27 19:55:57,065 INFO L125 PetriNetUnfolderBase]: For 170053/170053 co-relation queries the response was YES. [2024-06-27 19:55:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 1185 events. 650/1185 cut-off events. For 170053/170053 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6398 event pairs, 30 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 10365. Up to 1070 conditions per place. [2024-06-27 19:55:57,079 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 313 selfloop transitions, 24 changer transitions 0/340 dead transitions. [2024-06-27 19:55:57,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 340 transitions, 4617 flow [2024-06-27 19:55:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:55:57,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:55:57,081 INFO L175 Difference]: Start difference. First operand has 324 places, 324 transitions, 3872 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:55:57,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 340 transitions, 4617 flow [2024-06-27 19:55:57,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 340 transitions, 4485 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:57,642 INFO L231 Difference]: Finished difference. Result has 328 places, 325 transitions, 3820 flow [2024-06-27 19:55:57,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3820, PETRI_PLACES=328, PETRI_TRANSITIONS=325} [2024-06-27 19:55:57,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-27 19:55:57,643 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 325 transitions, 3820 flow [2024-06-27 19:55:57,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:57,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:57,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:57,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:55:57,643 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)] === [2024-06-27 19:55:57,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1397468075, now seen corresponding path program 7 times [2024-06-27 19:55:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677686894] [2024-06-27 19:55:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677686894] [2024-06-27 19:55:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677686894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183213155] [2024-06-27 19:55:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:58,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:55:58,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 325 transitions, 3820 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:58,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:58,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:55:58,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:59,184 INFO L124 PetriNetUnfolderBase]: 658/1202 cut-off events. [2024-06-27 19:55:59,185 INFO L125 PetriNetUnfolderBase]: For 174130/174130 co-relation queries the response was YES. [2024-06-27 19:55:59,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10757 conditions, 1202 events. 658/1202 cut-off events. For 174130/174130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6503 event pairs, 29 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 10598. Up to 1016 conditions per place. [2024-06-27 19:55:59,198 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 49 changer transitions 0/346 dead transitions. [2024-06-27 19:55:59,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 346 transitions, 5104 flow [2024-06-27 19:55:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 19:55:59,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 19:55:59,199 INFO L175 Difference]: Start difference. First operand has 328 places, 325 transitions, 3820 flow. Second operand 11 states and 142 transitions. [2024-06-27 19:55:59,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 346 transitions, 5104 flow [2024-06-27 19:55:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 346 transitions, 5034 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:59,821 INFO L231 Difference]: Finished difference. Result has 331 places, 329 transitions, 3985 flow [2024-06-27 19:55:59,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3985, PETRI_PLACES=331, PETRI_TRANSITIONS=329} [2024-06-27 19:55:59,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-27 19:55:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 329 transitions, 3985 flow [2024-06-27 19:55:59,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:59,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:59,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:59,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:55:59,823 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)] === [2024-06-27 19:55:59,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1656725547, now seen corresponding path program 8 times [2024-06-27 19:55:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294435049] [2024-06-27 19:55:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:00,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294435049] [2024-06-27 19:56:00,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294435049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:00,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:00,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434546354] [2024-06-27 19:56:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:00,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:00,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 329 transitions, 3985 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:00,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:00,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:01,310 INFO L124 PetriNetUnfolderBase]: 654/1196 cut-off events. [2024-06-27 19:56:01,311 INFO L125 PetriNetUnfolderBase]: For 171992/171992 co-relation queries the response was YES. [2024-06-27 19:56:01,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1196 events. 654/1196 cut-off events. For 171992/171992 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6487 event pairs, 29 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 10360. Up to 1013 conditions per place. [2024-06-27 19:56:01,325 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 48 changer transitions 0/345 dead transitions. [2024-06-27 19:56:01,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 4931 flow [2024-06-27 19:56:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:56:01,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 19:56:01,326 INFO L175 Difference]: Start difference. First operand has 331 places, 329 transitions, 3985 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:56:01,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 4931 flow [2024-06-27 19:56:01,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 345 transitions, 4618 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:01,923 INFO L231 Difference]: Finished difference. Result has 333 places, 329 transitions, 3782 flow [2024-06-27 19:56:01,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3782, PETRI_PLACES=333, PETRI_TRANSITIONS=329} [2024-06-27 19:56:01,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-27 19:56:01,924 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 329 transitions, 3782 flow [2024-06-27 19:56:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:01,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:01,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:01,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:56:01,924 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)] === [2024-06-27 19:56:01,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash 897117045, now seen corresponding path program 5 times [2024-06-27 19:56:01,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709803427] [2024-06-27 19:56:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:01,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709803427] [2024-06-27 19:56:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709803427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:02,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529958953] [2024-06-27 19:56:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:02,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:02,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 329 transitions, 3782 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:02,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:02,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:02,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:03,247 INFO L124 PetriNetUnfolderBase]: 658/1205 cut-off events. [2024-06-27 19:56:03,247 INFO L125 PetriNetUnfolderBase]: For 174374/174374 co-relation queries the response was YES. [2024-06-27 19:56:03,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 1205 events. 658/1205 cut-off events. For 174374/174374 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6538 event pairs, 32 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 10226. Up to 1037 conditions per place. [2024-06-27 19:56:03,262 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 304 selfloop transitions, 37 changer transitions 0/344 dead transitions. [2024-06-27 19:56:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 344 transitions, 4543 flow [2024-06-27 19:56:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 19:56:03,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 19:56:03,263 INFO L175 Difference]: Start difference. First operand has 333 places, 329 transitions, 3782 flow. Second operand 10 states and 123 transitions. [2024-06-27 19:56:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 344 transitions, 4543 flow [2024-06-27 19:56:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 344 transitions, 4449 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:03,933 INFO L231 Difference]: Finished difference. Result has 335 places, 332 transitions, 3824 flow [2024-06-27 19:56:03,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=335, PETRI_TRANSITIONS=332} [2024-06-27 19:56:03,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-27 19:56:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 332 transitions, 3824 flow [2024-06-27 19:56:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:03,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:56:03,935 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)] === [2024-06-27 19:56:03,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash -502054567, now seen corresponding path program 2 times [2024-06-27 19:56:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:03,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154350084] [2024-06-27 19:56:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154350084] [2024-06-27 19:56:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154350084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847729183] [2024-06-27 19:56:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:05,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:05,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:05,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 332 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:05,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:05,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:05,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:05,652 INFO L124 PetriNetUnfolderBase]: 662/1212 cut-off events. [2024-06-27 19:56:05,652 INFO L125 PetriNetUnfolderBase]: For 177756/177756 co-relation queries the response was YES. [2024-06-27 19:56:05,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1212 events. 662/1212 cut-off events. For 177756/177756 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6613 event pairs, 29 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 10308. Up to 1085 conditions per place. [2024-06-27 19:56:05,667 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 319 selfloop transitions, 26 changer transitions 0/348 dead transitions. [2024-06-27 19:56:05,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 348 transitions, 4595 flow [2024-06-27 19:56:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:56:05,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 19:56:05,668 INFO L175 Difference]: Start difference. First operand has 335 places, 332 transitions, 3824 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:56:05,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 348 transitions, 4595 flow [2024-06-27 19:56:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 348 transitions, 4491 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:56:06,301 INFO L231 Difference]: Finished difference. Result has 340 places, 334 transitions, 3823 flow [2024-06-27 19:56:06,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3823, PETRI_PLACES=340, PETRI_TRANSITIONS=334} [2024-06-27 19:56:06,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 19:56:06,302 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 334 transitions, 3823 flow [2024-06-27 19:56:06,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:06,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:06,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:06,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:56:06,302 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)] === [2024-06-27 19:56:06,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1393048295, now seen corresponding path program 3 times [2024-06-27 19:56:06,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197995195] [2024-06-27 19:56:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197995195] [2024-06-27 19:56:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197995195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:07,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858014146] [2024-06-27 19:56:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:07,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:07,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 334 transitions, 3823 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:07,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:07,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:07,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:08,131 INFO L124 PetriNetUnfolderBase]: 673/1229 cut-off events. [2024-06-27 19:56:08,132 INFO L125 PetriNetUnfolderBase]: For 191875/191875 co-relation queries the response was YES. [2024-06-27 19:56:08,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10823 conditions, 1229 events. 673/1229 cut-off events. For 191875/191875 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6726 event pairs, 31 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 10659. Up to 1040 conditions per place. [2024-06-27 19:56:08,146 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 48 changer transitions 0/352 dead transitions. [2024-06-27 19:56:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 352 transitions, 4838 flow [2024-06-27 19:56:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:56:08,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:56:08,148 INFO L175 Difference]: Start difference. First operand has 340 places, 334 transitions, 3823 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:56:08,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 352 transitions, 4838 flow [2024-06-27 19:56:08,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 352 transitions, 4754 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:08,863 INFO L231 Difference]: Finished difference. Result has 343 places, 336 transitions, 3901 flow [2024-06-27 19:56:08,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3901, PETRI_PLACES=343, PETRI_TRANSITIONS=336} [2024-06-27 19:56:08,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:56:08,864 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 336 transitions, 3901 flow [2024-06-27 19:56:08,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:08,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:08,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:08,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:56:08,865 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)] === [2024-06-27 19:56:08,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:08,865 INFO L85 PathProgramCache]: Analyzing trace with hash 897294985, now seen corresponding path program 9 times [2024-06-27 19:56:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:08,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318591800] [2024-06-27 19:56:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318591800] [2024-06-27 19:56:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318591800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773895823] [2024-06-27 19:56:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:09,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:10,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:10,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 336 transitions, 3901 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:10,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:10,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:10,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:10,622 INFO L124 PetriNetUnfolderBase]: 691/1263 cut-off events. [2024-06-27 19:56:10,622 INFO L125 PetriNetUnfolderBase]: For 207762/207762 co-relation queries the response was YES. [2024-06-27 19:56:10,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1263 events. 691/1263 cut-off events. For 207762/207762 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6945 event pairs, 38 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 11419. Up to 1059 conditions per place. [2024-06-27 19:56:10,638 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2024-06-27 19:56:10,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 357 transitions, 5285 flow [2024-06-27 19:56:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 19:56:10,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 19:56:10,640 INFO L175 Difference]: Start difference. First operand has 343 places, 336 transitions, 3901 flow. Second operand 11 states and 141 transitions. [2024-06-27 19:56:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 357 transitions, 5285 flow [2024-06-27 19:56:11,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 357 transitions, 5181 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:11,442 INFO L231 Difference]: Finished difference. Result has 346 places, 343 transitions, 4126 flow [2024-06-27 19:56:11,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3797, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4126, PETRI_PLACES=346, PETRI_TRANSITIONS=343} [2024-06-27 19:56:11,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-27 19:56:11,442 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 343 transitions, 4126 flow [2024-06-27 19:56:11,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:11,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:11,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:11,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:56:11,443 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)] === [2024-06-27 19:56:11,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1125196135, now seen corresponding path program 10 times [2024-06-27 19:56:11,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176373759] [2024-06-27 19:56:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:11,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176373759] [2024-06-27 19:56:12,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176373759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:12,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:12,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999165571] [2024-06-27 19:56:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:12,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 343 transitions, 4126 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:13,342 INFO L124 PetriNetUnfolderBase]: 719/1316 cut-off events. [2024-06-27 19:56:13,343 INFO L125 PetriNetUnfolderBase]: For 243166/243166 co-relation queries the response was YES. [2024-06-27 19:56:13,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12844 conditions, 1316 events. 719/1316 cut-off events. For 243166/243166 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7302 event pairs, 40 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 12679. Up to 843 conditions per place. [2024-06-27 19:56:13,360 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 251 selfloop transitions, 116 changer transitions 0/370 dead transitions. [2024-06-27 19:56:13,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 370 transitions, 5900 flow [2024-06-27 19:56:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 19:56:13,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 19:56:13,361 INFO L175 Difference]: Start difference. First operand has 346 places, 343 transitions, 4126 flow. Second operand 11 states and 148 transitions. [2024-06-27 19:56:13,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 370 transitions, 5900 flow [2024-06-27 19:56:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 370 transitions, 5748 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:14,182 INFO L231 Difference]: Finished difference. Result has 352 places, 352 transitions, 4527 flow [2024-06-27 19:56:14,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4527, PETRI_PLACES=352, PETRI_TRANSITIONS=352} [2024-06-27 19:56:14,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-27 19:56:14,183 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 352 transitions, 4527 flow [2024-06-27 19:56:14,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:14,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:14,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:14,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:56:14,183 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)] === [2024-06-27 19:56:14,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 903551095, now seen corresponding path program 11 times [2024-06-27 19:56:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851446857] [2024-06-27 19:56:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:15,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:15,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851446857] [2024-06-27 19:56:15,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851446857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:15,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:15,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142089544] [2024-06-27 19:56:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:15,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:15,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:15,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 352 transitions, 4527 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:15,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:15,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:15,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:16,074 INFO L124 PetriNetUnfolderBase]: 730/1338 cut-off events. [2024-06-27 19:56:16,074 INFO L125 PetriNetUnfolderBase]: For 261100/261100 co-relation queries the response was YES. [2024-06-27 19:56:16,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13444 conditions, 1338 events. 730/1338 cut-off events. For 261100/261100 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7481 event pairs, 40 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 13276. Up to 1107 conditions per place. [2024-06-27 19:56:16,092 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 317 selfloop transitions, 59 changer transitions 0/379 dead transitions. [2024-06-27 19:56:16,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 379 transitions, 6328 flow [2024-06-27 19:56:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:56:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:56:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-27 19:56:16,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-27 19:56:16,093 INFO L175 Difference]: Start difference. First operand has 352 places, 352 transitions, 4527 flow. Second operand 13 states and 164 transitions. [2024-06-27 19:56:16,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 379 transitions, 6328 flow [2024-06-27 19:56:16,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 379 transitions, 6142 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-27 19:56:16,996 INFO L231 Difference]: Finished difference. Result has 363 places, 362 transitions, 4856 flow [2024-06-27 19:56:16,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4856, PETRI_PLACES=363, PETRI_TRANSITIONS=362} [2024-06-27 19:56:16,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-27 19:56:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 362 transitions, 4856 flow [2024-06-27 19:56:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:16,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:56:16,998 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)] === [2024-06-27 19:56:16,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1393038065, now seen corresponding path program 4 times [2024-06-27 19:56:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769755858] [2024-06-27 19:56:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769755858] [2024-06-27 19:56:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769755858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838932216] [2024-06-27 19:56:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 362 transitions, 4856 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:18,752 INFO L124 PetriNetUnfolderBase]: 737/1350 cut-off events. [2024-06-27 19:56:18,753 INFO L125 PetriNetUnfolderBase]: For 269495/269495 co-relation queries the response was YES. [2024-06-27 19:56:18,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13623 conditions, 1350 events. 737/1350 cut-off events. For 269495/269495 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7581 event pairs, 36 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 13450. Up to 1175 conditions per place. [2024-06-27 19:56:18,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 329 selfloop transitions, 47 changer transitions 0/379 dead transitions. [2024-06-27 19:56:18,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 379 transitions, 5697 flow [2024-06-27 19:56:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:56:18,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 19:56:18,771 INFO L175 Difference]: Start difference. First operand has 363 places, 362 transitions, 4856 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:56:18,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 379 transitions, 5697 flow [2024-06-27 19:56:19,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 379 transitions, 5455 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-06-27 19:56:19,727 INFO L231 Difference]: Finished difference. Result has 369 places, 365 transitions, 4762 flow [2024-06-27 19:56:19,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4614, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4762, PETRI_PLACES=369, PETRI_TRANSITIONS=365} [2024-06-27 19:56:19,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-27 19:56:19,728 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 365 transitions, 4762 flow [2024-06-27 19:56:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:19,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:19,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:56:19,728 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)] === [2024-06-27 19:56:19,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1392740837, now seen corresponding path program 12 times [2024-06-27 19:56:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:19,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930072255] [2024-06-27 19:56:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:20,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930072255] [2024-06-27 19:56:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930072255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568007976] [2024-06-27 19:56:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:20,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:20,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 365 transitions, 4762 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:20,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:20,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:20,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:21,326 INFO L124 PetriNetUnfolderBase]: 748/1373 cut-off events. [2024-06-27 19:56:21,327 INFO L125 PetriNetUnfolderBase]: For 278286/278286 co-relation queries the response was YES. [2024-06-27 19:56:21,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13845 conditions, 1373 events. 748/1373 cut-off events. For 278286/278286 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7735 event pairs, 41 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 13670. Up to 877 conditions per place. [2024-06-27 19:56:21,341 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 249 selfloop transitions, 134 changer transitions 0/386 dead transitions. [2024-06-27 19:56:21,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 386 transitions, 6171 flow [2024-06-27 19:56:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:56:21,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:56:21,342 INFO L175 Difference]: Start difference. First operand has 369 places, 365 transitions, 4762 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:56:21,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 386 transitions, 6171 flow [2024-06-27 19:56:22,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 386 transitions, 6053 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:22,356 INFO L231 Difference]: Finished difference. Result has 372 places, 370 transitions, 5042 flow [2024-06-27 19:56:22,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5042, PETRI_PLACES=372, PETRI_TRANSITIONS=370} [2024-06-27 19:56:22,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-27 19:56:22,356 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 370 transitions, 5042 flow [2024-06-27 19:56:22,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:22,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:22,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:22,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:56:22,357 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)] === [2024-06-27 19:56:22,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1125433285, now seen corresponding path program 13 times [2024-06-27 19:56:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:22,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810312211] [2024-06-27 19:56:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:22,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:23,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810312211] [2024-06-27 19:56:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810312211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065934136] [2024-06-27 19:56:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:23,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:23,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 370 transitions, 5042 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:23,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:23,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:23,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:24,312 INFO L124 PetriNetUnfolderBase]: 759/1395 cut-off events. [2024-06-27 19:56:24,313 INFO L125 PetriNetUnfolderBase]: For 291554/291554 co-relation queries the response was YES. [2024-06-27 19:56:24,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14412 conditions, 1395 events. 759/1395 cut-off events. For 291554/291554 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7906 event pairs, 40 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 14236. Up to 889 conditions per place. [2024-06-27 19:56:24,331 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 125 changer transitions 0/394 dead transitions. [2024-06-27 19:56:24,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 394 transitions, 6958 flow [2024-06-27 19:56:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 19:56:24,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 19:56:24,332 INFO L175 Difference]: Start difference. First operand has 372 places, 370 transitions, 5042 flow. Second operand 11 states and 152 transitions. [2024-06-27 19:56:24,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 394 transitions, 6958 flow [2024-06-27 19:56:25,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 394 transitions, 6709 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 19:56:25,374 INFO L231 Difference]: Finished difference. Result has 376 places, 375 transitions, 5183 flow [2024-06-27 19:56:25,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5183, PETRI_PLACES=376, PETRI_TRANSITIONS=375} [2024-06-27 19:56:25,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 19:56:25,374 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 375 transitions, 5183 flow [2024-06-27 19:56:25,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:25,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:25,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:25,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:56:25,375 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)] === [2024-06-27 19:56:25,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:25,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1384466627, now seen corresponding path program 14 times [2024-06-27 19:56:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572570364] [2024-06-27 19:56:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:25,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572570364] [2024-06-27 19:56:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572570364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790287122] [2024-06-27 19:56:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:26,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:26,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 375 transitions, 5183 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:26,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:26,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:26,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:27,271 INFO L124 PetriNetUnfolderBase]: 757/1392 cut-off events. [2024-06-27 19:56:27,271 INFO L125 PetriNetUnfolderBase]: For 284684/284684 co-relation queries the response was YES. [2024-06-27 19:56:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14223 conditions, 1392 events. 757/1392 cut-off events. For 284684/284684 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7887 event pairs, 39 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 14046. Up to 1042 conditions per place. [2024-06-27 19:56:27,290 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 95 changer transitions 0/393 dead transitions. [2024-06-27 19:56:27,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 393 transitions, 6353 flow [2024-06-27 19:56:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 19:56:27,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 19:56:27,291 INFO L175 Difference]: Start difference. First operand has 376 places, 375 transitions, 5183 flow. Second operand 11 states and 142 transitions. [2024-06-27 19:56:27,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 393 transitions, 6353 flow [2024-06-27 19:56:28,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 393 transitions, 6038 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 19:56:28,329 INFO L231 Difference]: Finished difference. Result has 381 places, 380 transitions, 5214 flow [2024-06-27 19:56:28,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5214, PETRI_PLACES=381, PETRI_TRANSITIONS=380} [2024-06-27 19:56:28,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-27 19:56:28,330 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 380 transitions, 5214 flow [2024-06-27 19:56:28,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:28,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:28,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:56:28,331 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)] === [2024-06-27 19:56:28,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash 897301743, now seen corresponding path program 1 times [2024-06-27 19:56:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552956451] [2024-06-27 19:56:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:28,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552956451] [2024-06-27 19:56:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552956451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:29,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:29,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:29,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842234149] [2024-06-27 19:56:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:29,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:29,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:29,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:29,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 380 transitions, 5214 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) [2024-06-27 19:56:29,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:29,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:29,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:29,828 INFO L124 PetriNetUnfolderBase]: 753/1386 cut-off events. [2024-06-27 19:56:29,828 INFO L125 PetriNetUnfolderBase]: For 282527/282527 co-relation queries the response was YES. [2024-06-27 19:56:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13877 conditions, 1386 events. 753/1386 cut-off events. For 282527/282527 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7857 event pairs, 39 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 13698. Up to 1186 conditions per place. [2024-06-27 19:56:29,847 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 345 selfloop transitions, 43 changer transitions 0/391 dead transitions. [2024-06-27 19:56:29,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 391 transitions, 6016 flow [2024-06-27 19:56:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:56:29,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 19:56:29,848 INFO L175 Difference]: Start difference. First operand has 381 places, 380 transitions, 5214 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:56:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 391 transitions, 6016 flow [2024-06-27 19:56:30,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 391 transitions, 5740 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:30,864 INFO L231 Difference]: Finished difference. Result has 383 places, 380 transitions, 5032 flow [2024-06-27 19:56:30,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5032, PETRI_PLACES=383, PETRI_TRANSITIONS=380} [2024-06-27 19:56:30,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-27 19:56:30,864 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 380 transitions, 5032 flow [2024-06-27 19:56:30,865 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) [2024-06-27 19:56:30,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:30,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:56:30,865 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)] === [2024-06-27 19:56:30,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1133485783, now seen corresponding path program 5 times [2024-06-27 19:56:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997073258] [2024-06-27 19:56:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:32,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997073258] [2024-06-27 19:56:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997073258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:32,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:32,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60273171] [2024-06-27 19:56:32,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:32,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:32,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:32,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 380 transitions, 5032 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:32,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:32,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:32,664 INFO L124 PetriNetUnfolderBase]: 757/1393 cut-off events. [2024-06-27 19:56:32,664 INFO L125 PetriNetUnfolderBase]: For 286144/286144 co-relation queries the response was YES. [2024-06-27 19:56:32,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13740 conditions, 1393 events. 757/1393 cut-off events. For 286144/286144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7939 event pairs, 34 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 13562. Up to 1204 conditions per place. [2024-06-27 19:56:32,722 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 347 selfloop transitions, 44 changer transitions 0/394 dead transitions. [2024-06-27 19:56:32,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 5883 flow [2024-06-27 19:56:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:56:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 19:56:32,724 INFO L175 Difference]: Start difference. First operand has 383 places, 380 transitions, 5032 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:56:32,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 5883 flow [2024-06-27 19:56:33,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 394 transitions, 5773 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:56:33,719 INFO L231 Difference]: Finished difference. Result has 383 places, 381 transitions, 5048 flow [2024-06-27 19:56:33,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4922, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5048, PETRI_PLACES=383, PETRI_TRANSITIONS=381} [2024-06-27 19:56:33,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-27 19:56:33,720 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 381 transitions, 5048 flow [2024-06-27 19:56:33,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:33,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:33,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:56:33,721 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)] === [2024-06-27 19:56:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash 903557605, now seen corresponding path program 15 times [2024-06-27 19:56:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427183866] [2024-06-27 19:56:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427183866] [2024-06-27 19:56:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427183866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815734927] [2024-06-27 19:56:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:34,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:34,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 381 transitions, 5048 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:34,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:34,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:35,442 INFO L124 PetriNetUnfolderBase]: 830/1529 cut-off events. [2024-06-27 19:56:35,442 INFO L125 PetriNetUnfolderBase]: For 298488/298488 co-relation queries the response was YES. [2024-06-27 19:56:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15048 conditions, 1529 events. 830/1529 cut-off events. For 298488/298488 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8946 event pairs, 41 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 14869. Up to 1281 conditions per place. [2024-06-27 19:56:35,462 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2024-06-27 19:56:35,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 439 transitions, 7106 flow [2024-06-27 19:56:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 19:56:35,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-27 19:56:35,463 INFO L175 Difference]: Start difference. First operand has 383 places, 381 transitions, 5048 flow. Second operand 12 states and 158 transitions. [2024-06-27 19:56:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 439 transitions, 7106 flow [2024-06-27 19:56:36,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 439 transitions, 6972 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:36,592 INFO L231 Difference]: Finished difference. Result has 392 places, 414 transitions, 5704 flow [2024-06-27 19:56:36,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5704, PETRI_PLACES=392, PETRI_TRANSITIONS=414} [2024-06-27 19:56:36,592 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-27 19:56:36,592 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 414 transitions, 5704 flow [2024-06-27 19:56:36,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:36,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:36,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:56:36,593 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)] === [2024-06-27 19:56:36,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1125442213, now seen corresponding path program 6 times [2024-06-27 19:56:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689499676] [2024-06-27 19:56:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:36,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:37,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689499676] [2024-06-27 19:56:37,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689499676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:37,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:37,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:37,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646465654] [2024-06-27 19:56:37,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:37,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:37,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:37,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:37,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:37,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 414 transitions, 5704 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:37,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:37,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:37,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:38,403 INFO L124 PetriNetUnfolderBase]: 827/1523 cut-off events. [2024-06-27 19:56:38,403 INFO L125 PetriNetUnfolderBase]: For 291861/291861 co-relation queries the response was YES. [2024-06-27 19:56:38,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14891 conditions, 1523 events. 827/1523 cut-off events. For 291861/291861 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8895 event pairs, 33 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 14706. Up to 1309 conditions per place. [2024-06-27 19:56:38,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 378 selfloop transitions, 46 changer transitions 0/427 dead transitions. [2024-06-27 19:56:38,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 427 transitions, 6593 flow [2024-06-27 19:56:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:56:38,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 19:56:38,425 INFO L175 Difference]: Start difference. First operand has 392 places, 414 transitions, 5704 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:56:38,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 427 transitions, 6593 flow [2024-06-27 19:56:39,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 427 transitions, 6496 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 19:56:39,633 INFO L231 Difference]: Finished difference. Result has 398 places, 414 transitions, 5705 flow [2024-06-27 19:56:39,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5705, PETRI_PLACES=398, PETRI_TRANSITIONS=414} [2024-06-27 19:56:39,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-27 19:56:39,634 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 414 transitions, 5705 flow [2024-06-27 19:56:39,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:39,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:39,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:39,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:56:39,634 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)] === [2024-06-27 19:56:39,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052227, now seen corresponding path program 16 times [2024-06-27 19:56:39,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:39,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935599785] [2024-06-27 19:56:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:39,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:40,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935599785] [2024-06-27 19:56:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935599785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:40,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:40,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328496497] [2024-06-27 19:56:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:40,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:40,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:40,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 414 transitions, 5705 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:40,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:40,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:41,177 INFO L124 PetriNetUnfolderBase]: 836/1543 cut-off events. [2024-06-27 19:56:41,177 INFO L125 PetriNetUnfolderBase]: For 304371/304371 co-relation queries the response was YES. [2024-06-27 19:56:41,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15137 conditions, 1543 events. 836/1543 cut-off events. For 304371/304371 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9040 event pairs, 38 based on Foata normal form. 3/1544 useless extension candidates. Maximal degree in co-relation 14950. Up to 1159 conditions per place. [2024-06-27 19:56:41,198 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 337 selfloop transitions, 95 changer transitions 0/435 dead transitions. [2024-06-27 19:56:41,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 435 transitions, 7270 flow [2024-06-27 19:56:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 19:56:41,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 19:56:41,200 INFO L175 Difference]: Start difference. First operand has 398 places, 414 transitions, 5705 flow. Second operand 11 states and 145 transitions. [2024-06-27 19:56:41,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 435 transitions, 7270 flow [2024-06-27 19:56:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 435 transitions, 7116 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:42,323 INFO L231 Difference]: Finished difference. Result has 400 places, 420 transitions, 5940 flow [2024-06-27 19:56:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5940, PETRI_PLACES=400, PETRI_TRANSITIONS=420} [2024-06-27 19:56:42,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-27 19:56:42,324 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 420 transitions, 5940 flow [2024-06-27 19:56:42,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:56:42,324 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)] === [2024-06-27 19:56:42,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 17 times [2024-06-27 19:56:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052054165] [2024-06-27 19:56:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:43,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:43,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052054165] [2024-06-27 19:56:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052054165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:43,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:43,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:43,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550438811] [2024-06-27 19:56:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:43,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 420 transitions, 5940 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:44,158 INFO L124 PetriNetUnfolderBase]: 848/1565 cut-off events. [2024-06-27 19:56:44,158 INFO L125 PetriNetUnfolderBase]: For 303704/303704 co-relation queries the response was YES. [2024-06-27 19:56:44,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 1565 events. 848/1565 cut-off events. For 303704/303704 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9217 event pairs, 38 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 15257. Up to 1345 conditions per place. [2024-06-27 19:56:44,179 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 396 selfloop transitions, 49 changer transitions 0/448 dead transitions. [2024-06-27 19:56:44,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 448 transitions, 7358 flow [2024-06-27 19:56:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 19:56:44,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 19:56:44,180 INFO L175 Difference]: Start difference. First operand has 400 places, 420 transitions, 5940 flow. Second operand 12 states and 151 transitions. [2024-06-27 19:56:44,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 448 transitions, 7358 flow [2024-06-27 19:56:45,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 448 transitions, 6910 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:45,408 INFO L231 Difference]: Finished difference. Result has 406 places, 431 transitions, 5852 flow [2024-06-27 19:56:45,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5852, PETRI_PLACES=406, PETRI_TRANSITIONS=431} [2024-06-27 19:56:45,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-27 19:56:45,409 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 431 transitions, 5852 flow [2024-06-27 19:56:45,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:45,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:45,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:45,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:56:45,409 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)] === [2024-06-27 19:56:45,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash -741360955, now seen corresponding path program 7 times [2024-06-27 19:56:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801028025] [2024-06-27 19:56:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:46,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:46,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801028025] [2024-06-27 19:56:46,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801028025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:46,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:46,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:46,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913047875] [2024-06-27 19:56:46,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:46,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:46,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 431 transitions, 5852 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:46,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:46,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:46,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:47,287 INFO L124 PetriNetUnfolderBase]: 859/1586 cut-off events. [2024-06-27 19:56:47,288 INFO L125 PetriNetUnfolderBase]: For 322529/322529 co-relation queries the response was YES. [2024-06-27 19:56:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15590 conditions, 1586 events. 859/1586 cut-off events. For 322529/322529 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9387 event pairs, 72 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 15399. Up to 1419 conditions per place. [2024-06-27 19:56:47,311 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 417 selfloop transitions, 27 changer transitions 0/447 dead transitions. [2024-06-27 19:56:47,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 447 transitions, 7074 flow [2024-06-27 19:56:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:56:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:56:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:56:47,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:56:47,312 INFO L175 Difference]: Start difference. First operand has 406 places, 431 transitions, 5852 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:56:47,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 447 transitions, 7074 flow [2024-06-27 19:56:48,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 447 transitions, 6954 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 19:56:48,592 INFO L231 Difference]: Finished difference. Result has 411 places, 433 transitions, 5856 flow [2024-06-27 19:56:48,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5856, PETRI_PLACES=411, PETRI_TRANSITIONS=433} [2024-06-27 19:56:48,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-27 19:56:48,593 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 433 transitions, 5856 flow [2024-06-27 19:56:48,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:48,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:48,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:48,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:56:48,593 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)] === [2024-06-27 19:56:48,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1894655931, now seen corresponding path program 8 times [2024-06-27 19:56:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:48,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057338670] [2024-06-27 19:56:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:48,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:49,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057338670] [2024-06-27 19:56:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057338670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:49,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:49,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930768461] [2024-06-27 19:56:49,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:49,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:49,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:49,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 433 transitions, 5856 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:49,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:49,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:49,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:50,528 INFO L124 PetriNetUnfolderBase]: 860/1589 cut-off events. [2024-06-27 19:56:50,528 INFO L125 PetriNetUnfolderBase]: For 328826/328826 co-relation queries the response was YES. [2024-06-27 19:56:50,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 1589 events. 860/1589 cut-off events. For 328826/328826 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9400 event pairs, 70 based on Foata normal form. 4/1591 useless extension candidates. Maximal degree in co-relation 15175. Up to 1431 conditions per place. [2024-06-27 19:56:50,551 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 26 changer transitions 0/444 dead transitions. [2024-06-27 19:56:50,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 6794 flow [2024-06-27 19:56:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:56:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:56:50,552 INFO L175 Difference]: Start difference. First operand has 411 places, 433 transitions, 5856 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:56:50,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 6794 flow [2024-06-27 19:56:51,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 444 transitions, 6685 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 19:56:51,924 INFO L231 Difference]: Finished difference. Result has 412 places, 434 transitions, 5842 flow [2024-06-27 19:56:51,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5842, PETRI_PLACES=412, PETRI_TRANSITIONS=434} [2024-06-27 19:56:51,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-27 19:56:51,925 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 434 transitions, 5842 flow [2024-06-27 19:56:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:51,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:51,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:51,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:56:51,926 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)] === [2024-06-27 19:56:51,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984545, now seen corresponding path program 18 times [2024-06-27 19:56:51,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:51,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799398544] [2024-06-27 19:56:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799398544] [2024-06-27 19:56:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799398544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87579952] [2024-06-27 19:56:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:52,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:52,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 434 transitions, 5842 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:52,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:52,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:52,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:53,549 INFO L124 PetriNetUnfolderBase]: 873/1614 cut-off events. [2024-06-27 19:56:53,550 INFO L125 PetriNetUnfolderBase]: For 327769/327769 co-relation queries the response was YES. [2024-06-27 19:56:53,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15898 conditions, 1614 events. 873/1614 cut-off events. For 327769/327769 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9633 event pairs, 46 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 15706. Up to 977 conditions per place. [2024-06-27 19:56:53,569 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 164 changer transitions 0/461 dead transitions. [2024-06-27 19:56:53,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 461 transitions, 7891 flow [2024-06-27 19:56:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:56:53,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:56:53,570 INFO L175 Difference]: Start difference. First operand has 412 places, 434 transitions, 5842 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:56:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 461 transitions, 7891 flow [2024-06-27 19:56:55,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 461 transitions, 7814 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:56:55,079 INFO L231 Difference]: Finished difference. Result has 416 places, 445 transitions, 6460 flow [2024-06-27 19:56:55,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6460, PETRI_PLACES=416, PETRI_TRANSITIONS=445} [2024-06-27 19:56:55,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-27 19:56:55,080 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 445 transitions, 6460 flow [2024-06-27 19:56:55,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:55,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:55,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:55,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:56:55,082 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)] === [2024-06-27 19:56:55,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2067978035, now seen corresponding path program 19 times [2024-06-27 19:56:55,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829636827] [2024-06-27 19:56:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:55,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:55,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829636827] [2024-06-27 19:56:55,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829636827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:55,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:55,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:55,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726517929] [2024-06-27 19:56:55,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:55,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:55,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:55,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:56,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:56,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 445 transitions, 6460 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:56,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:56,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:56,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:56,643 INFO L124 PetriNetUnfolderBase]: 881/1631 cut-off events. [2024-06-27 19:56:56,644 INFO L125 PetriNetUnfolderBase]: For 339649/339649 co-relation queries the response was YES. [2024-06-27 19:56:56,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16550 conditions, 1631 events. 881/1631 cut-off events. For 339649/339649 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9744 event pairs, 57 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 16356. Up to 707 conditions per place. [2024-06-27 19:56:56,667 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 242 selfloop transitions, 220 changer transitions 0/465 dead transitions. [2024-06-27 19:56:56,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 465 transitions, 8373 flow [2024-06-27 19:56:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:56,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 19:56:56,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 19:56:56,668 INFO L175 Difference]: Start difference. First operand has 416 places, 445 transitions, 6460 flow. Second operand 11 states and 150 transitions. [2024-06-27 19:56:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 465 transitions, 8373 flow [2024-06-27 19:56:58,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 465 transitions, 8120 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-27 19:56:58,145 INFO L231 Difference]: Finished difference. Result has 423 places, 451 transitions, 6860 flow [2024-06-27 19:56:58,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6860, PETRI_PLACES=423, PETRI_TRANSITIONS=451} [2024-06-27 19:56:58,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-27 19:56:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 451 transitions, 6860 flow [2024-06-27 19:56:58,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:58,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:58,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:56:58,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:56:58,147 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)] === [2024-06-27 19:56:58,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1689029937, now seen corresponding path program 6 times [2024-06-27 19:56:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743897228] [2024-06-27 19:56:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743897228] [2024-06-27 19:56:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743897228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:58,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:58,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:58,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097631202] [2024-06-27 19:56:58,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:59,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:56:59,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 451 transitions, 6860 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:59,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:59,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:56:59,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:59,541 INFO L124 PetriNetUnfolderBase]: 885/1638 cut-off events. [2024-06-27 19:56:59,541 INFO L125 PetriNetUnfolderBase]: For 354686/354686 co-relation queries the response was YES. [2024-06-27 19:56:59,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16966 conditions, 1638 events. 885/1638 cut-off events. For 354686/354686 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9759 event pairs, 49 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 16770. Up to 1391 conditions per place. [2024-06-27 19:56:59,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 409 selfloop transitions, 51 changer transitions 0/463 dead transitions. [2024-06-27 19:56:59,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 463 transitions, 7850 flow [2024-06-27 19:56:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:59,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:56:59,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:56:59,568 INFO L175 Difference]: Start difference. First operand has 423 places, 451 transitions, 6860 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:56:59,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 463 transitions, 7850 flow [2024-06-27 19:57:01,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 463 transitions, 7702 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 19:57:01,176 INFO L231 Difference]: Finished difference. Result has 428 places, 453 transitions, 6868 flow [2024-06-27 19:57:01,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6713, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6868, PETRI_PLACES=428, PETRI_TRANSITIONS=453} [2024-06-27 19:57:01,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-27 19:57:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 453 transitions, 6868 flow [2024-06-27 19:57:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:01,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:57:01,178 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)] === [2024-06-27 19:57:01,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash 327034307, now seen corresponding path program 20 times [2024-06-27 19:57:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639417375] [2024-06-27 19:57:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:02,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639417375] [2024-06-27 19:57:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639417375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:02,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237197407] [2024-06-27 19:57:02,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:02,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:02,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:02,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 453 transitions, 6868 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:02,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:02,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:02,781 INFO L124 PetriNetUnfolderBase]: 901/1668 cut-off events. [2024-06-27 19:57:02,781 INFO L125 PetriNetUnfolderBase]: For 376510/376510 co-relation queries the response was YES. [2024-06-27 19:57:02,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17676 conditions, 1668 events. 901/1668 cut-off events. For 376510/376510 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10012 event pairs, 49 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 17478. Up to 1385 conditions per place. [2024-06-27 19:57:02,806 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 405 selfloop transitions, 65 changer transitions 0/473 dead transitions. [2024-06-27 19:57:02,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 473 transitions, 8417 flow [2024-06-27 19:57:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:57:02,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:57:02,807 INFO L175 Difference]: Start difference. First operand has 428 places, 453 transitions, 6868 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:57:02,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 473 transitions, 8417 flow [2024-06-27 19:57:04,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 473 transitions, 8201 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:04,337 INFO L231 Difference]: Finished difference. Result has 429 places, 460 transitions, 7082 flow [2024-06-27 19:57:04,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6652, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7082, PETRI_PLACES=429, PETRI_TRANSITIONS=460} [2024-06-27 19:57:04,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-27 19:57:04,338 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 460 transitions, 7082 flow [2024-06-27 19:57:04,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:04,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:04,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:57:04,339 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)] === [2024-06-27 19:57:04,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1557958537, now seen corresponding path program 21 times [2024-06-27 19:57:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416073156] [2024-06-27 19:57:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:05,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:05,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416073156] [2024-06-27 19:57:05,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416073156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:05,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:05,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956619390] [2024-06-27 19:57:05,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:05,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:05,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 460 transitions, 7082 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:05,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:05,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:05,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:06,193 INFO L124 PetriNetUnfolderBase]: 899/1665 cut-off events. [2024-06-27 19:57:06,193 INFO L125 PetriNetUnfolderBase]: For 365986/365986 co-relation queries the response was YES. [2024-06-27 19:57:06,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 1665 events. 899/1665 cut-off events. For 365986/365986 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9981 event pairs, 54 based on Foata normal form. 1/1660 useless extension candidates. Maximal degree in co-relation 17236. Up to 1361 conditions per place. [2024-06-27 19:57:06,214 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 399 selfloop transitions, 71 changer transitions 0/473 dead transitions. [2024-06-27 19:57:06,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 473 transitions, 8351 flow [2024-06-27 19:57:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:57:06,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 19:57:06,215 INFO L175 Difference]: Start difference. First operand has 429 places, 460 transitions, 7082 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:57:06,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 473 transitions, 8351 flow [2024-06-27 19:57:07,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 473 transitions, 8121 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:07,796 INFO L231 Difference]: Finished difference. Result has 433 places, 461 transitions, 7035 flow [2024-06-27 19:57:07,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6852, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7035, PETRI_PLACES=433, PETRI_TRANSITIONS=461} [2024-06-27 19:57:07,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-27 19:57:07,797 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 461 transitions, 7035 flow [2024-06-27 19:57:07,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:07,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:07,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:07,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:57:07,798 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)] === [2024-06-27 19:57:07,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 22 times [2024-06-27 19:57:07,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:07,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386856845] [2024-06-27 19:57:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386856845] [2024-06-27 19:57:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386856845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656791440] [2024-06-27 19:57:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:08,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:08,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 461 transitions, 7035 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:08,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:08,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:08,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:09,579 INFO L124 PetriNetUnfolderBase]: 925/1715 cut-off events. [2024-06-27 19:57:09,579 INFO L125 PetriNetUnfolderBase]: For 414529/414529 co-relation queries the response was YES. [2024-06-27 19:57:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18676 conditions, 1715 events. 925/1715 cut-off events. For 414529/414529 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10375 event pairs, 52 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 18477. Up to 1346 conditions per place. [2024-06-27 19:57:09,605 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 84 changer transitions 0/489 dead transitions. [2024-06-27 19:57:09,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 489 transitions, 9358 flow [2024-06-27 19:57:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 19:57:09,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 19:57:09,606 INFO L175 Difference]: Start difference. First operand has 433 places, 461 transitions, 7035 flow. Second operand 11 states and 148 transitions. [2024-06-27 19:57:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 489 transitions, 9358 flow [2024-06-27 19:57:11,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 489 transitions, 9160 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 19:57:11,295 INFO L231 Difference]: Finished difference. Result has 436 places, 471 transitions, 7453 flow [2024-06-27 19:57:11,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6837, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7453, PETRI_PLACES=436, PETRI_TRANSITIONS=471} [2024-06-27 19:57:11,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-27 19:57:11,296 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 471 transitions, 7453 flow [2024-06-27 19:57:11,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:11,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:11,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:57:11,297 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)] === [2024-06-27 19:57:11,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1551702427, now seen corresponding path program 23 times [2024-06-27 19:57:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:11,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515830943] [2024-06-27 19:57:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:11,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:12,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515830943] [2024-06-27 19:57:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515830943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:12,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:12,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353552260] [2024-06-27 19:57:12,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:12,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:12,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 471 transitions, 7453 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:12,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:12,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:13,103 INFO L124 PetriNetUnfolderBase]: 928/1720 cut-off events. [2024-06-27 19:57:13,103 INFO L125 PetriNetUnfolderBase]: For 412267/412267 co-relation queries the response was YES. [2024-06-27 19:57:13,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18798 conditions, 1720 events. 928/1720 cut-off events. For 412267/412267 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10397 event pairs, 49 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 18598. Up to 1374 conditions per place. [2024-06-27 19:57:13,128 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 85 changer transitions 0/490 dead transitions. [2024-06-27 19:57:13,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 490 transitions, 9417 flow [2024-06-27 19:57:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:57:13,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:57:13,130 INFO L175 Difference]: Start difference. First operand has 436 places, 471 transitions, 7453 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:57:13,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 490 transitions, 9417 flow [2024-06-27 19:57:14,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 490 transitions, 9068 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:14,842 INFO L231 Difference]: Finished difference. Result has 440 places, 475 transitions, 7437 flow [2024-06-27 19:57:14,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7118, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7437, PETRI_PLACES=440, PETRI_TRANSITIONS=475} [2024-06-27 19:57:14,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-27 19:57:14,842 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 475 transitions, 7437 flow [2024-06-27 19:57:14,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:14,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:14,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:14,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:57:14,843 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)] === [2024-06-27 19:57:14,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -9313407, now seen corresponding path program 9 times [2024-06-27 19:57:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:14,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816171390] [2024-06-27 19:57:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:15,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:15,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816171390] [2024-06-27 19:57:15,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816171390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:15,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:15,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:15,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613780775] [2024-06-27 19:57:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:15,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:15,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:15,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:16,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:16,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 475 transitions, 7437 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:16,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:16,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:16,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:16,747 INFO L124 PetriNetUnfolderBase]: 939/1740 cut-off events. [2024-06-27 19:57:16,747 INFO L125 PetriNetUnfolderBase]: For 442189/442189 co-relation queries the response was YES. [2024-06-27 19:57:16,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 1740 events. 939/1740 cut-off events. For 442189/442189 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10564 event pairs, 78 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 18927. Up to 1511 conditions per place. [2024-06-27 19:57:16,772 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 459 selfloop transitions, 30 changer transitions 0/492 dead transitions. [2024-06-27 19:57:16,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 492 transitions, 8777 flow [2024-06-27 19:57:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:57:16,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:57:16,773 INFO L175 Difference]: Start difference. First operand has 440 places, 475 transitions, 7437 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:57:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 492 transitions, 8777 flow [2024-06-27 19:57:18,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 492 transitions, 8588 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 19:57:18,513 INFO L231 Difference]: Finished difference. Result has 446 places, 477 transitions, 7386 flow [2024-06-27 19:57:18,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7248, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7386, PETRI_PLACES=446, PETRI_TRANSITIONS=477} [2024-06-27 19:57:18,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-27 19:57:18,514 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 477 transitions, 7386 flow [2024-06-27 19:57:18,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:18,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:18,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:57:18,514 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)] === [2024-06-27 19:57:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -741371495, now seen corresponding path program 2 times [2024-06-27 19:57:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384520226] [2024-06-27 19:57:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:19,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:19,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384520226] [2024-06-27 19:57:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384520226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:19,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:19,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190993383] [2024-06-27 19:57:19,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:19,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:19,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 477 transitions, 7386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:19,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:19,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:20,576 INFO L124 PetriNetUnfolderBase]: 942/1745 cut-off events. [2024-06-27 19:57:20,577 INFO L125 PetriNetUnfolderBase]: For 440441/440441 co-relation queries the response was YES. [2024-06-27 19:57:20,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19142 conditions, 1745 events. 942/1745 cut-off events. For 440441/440441 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10601 event pairs, 80 based on Foata normal form. 1/1744 useless extension candidates. Maximal degree in co-relation 18939. Up to 1569 conditions per place. [2024-06-27 19:57:20,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 460 selfloop transitions, 28 changer transitions 0/491 dead transitions. [2024-06-27 19:57:20,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 491 transitions, 8684 flow [2024-06-27 19:57:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:57:20,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:57:20,605 INFO L175 Difference]: Start difference. First operand has 446 places, 477 transitions, 7386 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:57:20,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 491 transitions, 8684 flow [2024-06-27 19:57:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 491 transitions, 8609 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:57:22,445 INFO L231 Difference]: Finished difference. Result has 450 places, 479 transitions, 7408 flow [2024-06-27 19:57:22,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7311, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7408, PETRI_PLACES=450, PETRI_TRANSITIONS=479} [2024-06-27 19:57:22,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-27 19:57:22,446 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 479 transitions, 7408 flow [2024-06-27 19:57:22,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:22,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:22,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:57:22,446 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)] === [2024-06-27 19:57:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1321767739, now seen corresponding path program 10 times [2024-06-27 19:57:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150085490] [2024-06-27 19:57:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:23,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150085490] [2024-06-27 19:57:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150085490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:23,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:23,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222330041] [2024-06-27 19:57:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:23,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:23,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:23,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:23,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:23,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 479 transitions, 7408 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:23,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:23,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:23,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:24,535 INFO L124 PetriNetUnfolderBase]: 949/1757 cut-off events. [2024-06-27 19:57:24,535 INFO L125 PetriNetUnfolderBase]: For 455244/455244 co-relation queries the response was YES. [2024-06-27 19:57:24,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19253 conditions, 1757 events. 949/1757 cut-off events. For 455244/455244 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10685 event pairs, 39 based on Foata normal form. 2/1755 useless extension candidates. Maximal degree in co-relation 19048. Up to 1543 conditions per place. [2024-06-27 19:57:24,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 40 changer transitions 0/499 dead transitions. [2024-06-27 19:57:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 499 transitions, 8556 flow [2024-06-27 19:57:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:57:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:57:24,563 INFO L175 Difference]: Start difference. First operand has 450 places, 479 transitions, 7408 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:57:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 499 transitions, 8556 flow [2024-06-27 19:57:26,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 499 transitions, 8479 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:26,358 INFO L231 Difference]: Finished difference. Result has 453 places, 487 transitions, 7559 flow [2024-06-27 19:57:26,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7559, PETRI_PLACES=453, PETRI_TRANSITIONS=487} [2024-06-27 19:57:26,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-27 19:57:26,359 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 487 transitions, 7559 flow [2024-06-27 19:57:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:26,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:26,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:57:26,360 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)] === [2024-06-27 19:57:26,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776667, now seen corresponding path program 24 times [2024-06-27 19:57:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:26,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565973711] [2024-06-27 19:57:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565973711] [2024-06-27 19:57:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565973711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:27,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917264979] [2024-06-27 19:57:27,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:27,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:27,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 487 transitions, 7559 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:27,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:27,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:27,969 INFO L124 PetriNetUnfolderBase]: 960/1777 cut-off events. [2024-06-27 19:57:27,970 INFO L125 PetriNetUnfolderBase]: For 470993/470993 co-relation queries the response was YES. [2024-06-27 19:57:27,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19803 conditions, 1777 events. 960/1777 cut-off events. For 470993/470993 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10817 event pairs, 58 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 19596. Up to 1324 conditions per place. [2024-06-27 19:57:27,999 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 393 selfloop transitions, 111 changer transitions 0/507 dead transitions. [2024-06-27 19:57:27,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 507 transitions, 9411 flow [2024-06-27 19:57:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 19:57:28,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-27 19:57:28,000 INFO L175 Difference]: Start difference. First operand has 453 places, 487 transitions, 7559 flow. Second operand 11 states and 149 transitions. [2024-06-27 19:57:28,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 507 transitions, 9411 flow [2024-06-27 19:57:30,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 507 transitions, 9307 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 19:57:30,193 INFO L231 Difference]: Finished difference. Result has 459 places, 493 transitions, 7935 flow [2024-06-27 19:57:30,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7455, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7935, PETRI_PLACES=459, PETRI_TRANSITIONS=493} [2024-06-27 19:57:30,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-27 19:57:30,199 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 493 transitions, 7935 flow [2024-06-27 19:57:30,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:30,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:30,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:30,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:57:30,200 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)] === [2024-06-27 19:57:30,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:30,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1083670085, now seen corresponding path program 3 times [2024-06-27 19:57:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339231348] [2024-06-27 19:57:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339231348] [2024-06-27 19:57:31,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339231348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:31,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:57:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735558449] [2024-06-27 19:57:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:57:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:57:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:57:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:31,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 493 transitions, 7935 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) [2024-06-27 19:57:31,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:31,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:31,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:31,816 INFO L124 PetriNetUnfolderBase]: 958/1777 cut-off events. [2024-06-27 19:57:31,816 INFO L125 PetriNetUnfolderBase]: For 458954/458954 co-relation queries the response was YES. [2024-06-27 19:57:31,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19832 conditions, 1777 events. 958/1777 cut-off events. For 458954/458954 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10869 event pairs, 85 based on Foata normal form. 1/1776 useless extension candidates. Maximal degree in co-relation 19623. Up to 1598 conditions per place. [2024-06-27 19:57:31,841 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 470 selfloop transitions, 29 changer transitions 0/502 dead transitions. [2024-06-27 19:57:31,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 502 transitions, 8953 flow [2024-06-27 19:57:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:57:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:57:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:57:31,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 19:57:31,843 INFO L175 Difference]: Start difference. First operand has 459 places, 493 transitions, 7935 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:57:31,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 502 transitions, 8953 flow [2024-06-27 19:57:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 502 transitions, 8267 flow, removed 115 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:33,671 INFO L231 Difference]: Finished difference. Result has 460 places, 493 transitions, 7318 flow [2024-06-27 19:57:33,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7249, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7318, PETRI_PLACES=460, PETRI_TRANSITIONS=493} [2024-06-27 19:57:33,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-27 19:57:33,671 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 493 transitions, 7318 flow [2024-06-27 19:57:33,671 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) [2024-06-27 19:57:33,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:33,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:57:33,672 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)] === [2024-06-27 19:57:33,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 74257075, now seen corresponding path program 25 times [2024-06-27 19:57:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622457800] [2024-06-27 19:57:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622457800] [2024-06-27 19:57:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622457800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508851137] [2024-06-27 19:57:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:34,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:34,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 493 transitions, 7318 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:34,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:34,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:35,463 INFO L124 PetriNetUnfolderBase]: 954/1771 cut-off events. [2024-06-27 19:57:35,464 INFO L125 PetriNetUnfolderBase]: For 453310/453310 co-relation queries the response was YES. [2024-06-27 19:57:35,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18816 conditions, 1771 events. 954/1771 cut-off events. For 453310/453310 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10841 event pairs, 47 based on Foata normal form. 2/1768 useless extension candidates. Maximal degree in co-relation 18607. Up to 1425 conditions per place. [2024-06-27 19:57:35,492 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 421 selfloop transitions, 84 changer transitions 0/508 dead transitions. [2024-06-27 19:57:35,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 508 transitions, 8944 flow [2024-06-27 19:57:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 19:57:35,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 19:57:35,493 INFO L175 Difference]: Start difference. First operand has 460 places, 493 transitions, 7318 flow. Second operand 11 states and 144 transitions. [2024-06-27 19:57:35,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 508 transitions, 8944 flow [2024-06-27 19:57:37,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 508 transitions, 8779 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:37,385 INFO L231 Difference]: Finished difference. Result has 461 places, 493 transitions, 7333 flow [2024-06-27 19:57:37,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7333, PETRI_PLACES=461, PETRI_TRANSITIONS=493} [2024-06-27 19:57:37,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-27 19:57:37,386 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 493 transitions, 7333 flow [2024-06-27 19:57:37,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:37,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:37,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:37,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:57:37,387 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)] === [2024-06-27 19:57:37,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:37,387 INFO L85 PathProgramCache]: Analyzing trace with hash 563506895, now seen corresponding path program 11 times [2024-06-27 19:57:37,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:37,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578380017] [2024-06-27 19:57:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:37,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578380017] [2024-06-27 19:57:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578380017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:38,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111728206] [2024-06-27 19:57:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:38,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:38,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 493 transitions, 7333 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:38,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:38,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:38,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:39,348 INFO L124 PetriNetUnfolderBase]: 958/1779 cut-off events. [2024-06-27 19:57:39,348 INFO L125 PetriNetUnfolderBase]: For 455439/455439 co-relation queries the response was YES. [2024-06-27 19:57:39,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18946 conditions, 1779 events. 958/1779 cut-off events. For 455439/455439 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10885 event pairs, 39 based on Foata normal form. 2/1776 useless extension candidates. Maximal degree in co-relation 18737. Up to 1548 conditions per place. [2024-06-27 19:57:39,373 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 47 changer transitions 0/506 dead transitions. [2024-06-27 19:57:39,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 506 transitions, 8412 flow [2024-06-27 19:57:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:57:39,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 19:57:39,374 INFO L175 Difference]: Start difference. First operand has 461 places, 493 transitions, 7333 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:57:39,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 506 transitions, 8412 flow [2024-06-27 19:57:41,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 506 transitions, 8229 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:41,386 INFO L231 Difference]: Finished difference. Result has 462 places, 494 transitions, 7288 flow [2024-06-27 19:57:41,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7288, PETRI_PLACES=462, PETRI_TRANSITIONS=494} [2024-06-27 19:57:41,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-27 19:57:41,386 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 494 transitions, 7288 flow [2024-06-27 19:57:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:41,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:41,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:57:41,387 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)] === [2024-06-27 19:57:41,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1941344783, now seen corresponding path program 12 times [2024-06-27 19:57:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030287168] [2024-06-27 19:57:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030287168] [2024-06-27 19:57:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030287168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006465061] [2024-06-27 19:57:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:42,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:42,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 494 transitions, 7288 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:42,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:42,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:42,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:43,445 INFO L124 PetriNetUnfolderBase]: 955/1770 cut-off events. [2024-06-27 19:57:43,445 INFO L125 PetriNetUnfolderBase]: For 441829/441829 co-relation queries the response was YES. [2024-06-27 19:57:43,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18602 conditions, 1770 events. 955/1770 cut-off events. For 441829/441829 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10844 event pairs, 74 based on Foata normal form. 2/1770 useless extension candidates. Maximal degree in co-relation 18392. Up to 1595 conditions per place. [2024-06-27 19:57:43,478 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 481 selfloop transitions, 22 changer transitions 0/506 dead transitions. [2024-06-27 19:57:43,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 506 transitions, 8320 flow [2024-06-27 19:57:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:57:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:57:43,479 INFO L175 Difference]: Start difference. First operand has 462 places, 494 transitions, 7288 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:57:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 506 transitions, 8320 flow [2024-06-27 19:57:45,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 506 transitions, 8156 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:45,321 INFO L231 Difference]: Finished difference. Result has 463 places, 494 transitions, 7172 flow [2024-06-27 19:57:45,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7124, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7172, PETRI_PLACES=463, PETRI_TRANSITIONS=494} [2024-06-27 19:57:45,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 432 predicate places. [2024-06-27 19:57:45,322 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 494 transitions, 7172 flow [2024-06-27 19:57:45,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:45,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:45,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:45,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:57:45,323 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)] === [2024-06-27 19:57:45,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 304253143, now seen corresponding path program 13 times [2024-06-27 19:57:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:45,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717028048] [2024-06-27 19:57:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:46,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:46,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717028048] [2024-06-27 19:57:46,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717028048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:46,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:46,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221382139] [2024-06-27 19:57:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:46,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:46,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:46,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:46,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 494 transitions, 7172 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:46,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:46,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:46,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:47,140 INFO L124 PetriNetUnfolderBase]: 966/1794 cut-off events. [2024-06-27 19:57:47,141 INFO L125 PetriNetUnfolderBase]: For 468246/468246 co-relation queries the response was YES. [2024-06-27 19:57:47,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18967 conditions, 1794 events. 966/1794 cut-off events. For 468246/468246 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11033 event pairs, 39 based on Foata normal form. 2/1792 useless extension candidates. Maximal degree in co-relation 18758. Up to 1533 conditions per place. [2024-06-27 19:57:47,168 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 457 selfloop transitions, 50 changer transitions 0/510 dead transitions. [2024-06-27 19:57:47,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 510 transitions, 8577 flow [2024-06-27 19:57:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:57:47,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:57:47,169 INFO L175 Difference]: Start difference. First operand has 463 places, 494 transitions, 7172 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:57:47,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 510 transitions, 8577 flow [2024-06-27 19:57:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 510 transitions, 8508 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:49,083 INFO L231 Difference]: Finished difference. Result has 464 places, 496 transitions, 7289 flow [2024-06-27 19:57:49,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7103, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7289, PETRI_PLACES=464, PETRI_TRANSITIONS=496} [2024-06-27 19:57:49,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-27 19:57:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 496 transitions, 7289 flow [2024-06-27 19:57:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:49,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:49,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:57:49,085 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)] === [2024-06-27 19:57:49,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash 555166097, now seen corresponding path program 26 times [2024-06-27 19:57:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:49,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867691378] [2024-06-27 19:57:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:49,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:50,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:50,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867691378] [2024-06-27 19:57:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867691378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:50,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267161304] [2024-06-27 19:57:50,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:50,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:50,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:50,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 496 transitions, 7289 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:50,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:50,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:50,938 INFO L124 PetriNetUnfolderBase]: 977/1814 cut-off events. [2024-06-27 19:57:50,938 INFO L125 PetriNetUnfolderBase]: For 484740/484740 co-relation queries the response was YES. [2024-06-27 19:57:50,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 1814 events. 977/1814 cut-off events. For 484740/484740 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11161 event pairs, 54 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 19247. Up to 1377 conditions per place. [2024-06-27 19:57:50,963 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 413 selfloop transitions, 105 changer transitions 0/521 dead transitions. [2024-06-27 19:57:50,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 521 transitions, 9765 flow [2024-06-27 19:57:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 19:57:50,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 19:57:50,964 INFO L175 Difference]: Start difference. First operand has 464 places, 496 transitions, 7289 flow. Second operand 11 states and 154 transitions. [2024-06-27 19:57:50,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 521 transitions, 9765 flow [2024-06-27 19:57:53,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 521 transitions, 9656 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:53,062 INFO L231 Difference]: Finished difference. Result has 468 places, 502 transitions, 7618 flow [2024-06-27 19:57:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7182, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7618, PETRI_PLACES=468, PETRI_TRANSITIONS=502} [2024-06-27 19:57:53,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-27 19:57:53,063 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 502 transitions, 7618 flow [2024-06-27 19:57:53,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:53,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:57:53,063 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)] === [2024-06-27 19:57:53,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash -19797855, now seen corresponding path program 27 times [2024-06-27 19:57:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731161071] [2024-06-27 19:57:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:54,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731161071] [2024-06-27 19:57:54,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731161071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:54,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:54,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649083356] [2024-06-27 19:57:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:54,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:54,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:54,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 502 transitions, 7618 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:54,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:54,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:54,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:54,721 INFO L124 PetriNetUnfolderBase]: 980/1820 cut-off events. [2024-06-27 19:57:54,722 INFO L125 PetriNetUnfolderBase]: For 481098/481098 co-relation queries the response was YES. [2024-06-27 19:57:54,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 1820 events. 980/1820 cut-off events. For 481098/481098 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11234 event pairs, 76 based on Foata normal form. 1/1819 useless extension candidates. Maximal degree in co-relation 19469. Up to 1664 conditions per place. [2024-06-27 19:57:54,749 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 492 selfloop transitions, 19 changer transitions 0/514 dead transitions. [2024-06-27 19:57:54,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 514 transitions, 8722 flow [2024-06-27 19:57:54,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:57:54,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:57:54,750 INFO L175 Difference]: Start difference. First operand has 468 places, 502 transitions, 7618 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:57:54,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 514 transitions, 8722 flow [2024-06-27 19:57:56,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 514 transitions, 8280 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:56,772 INFO L231 Difference]: Finished difference. Result has 470 places, 504 transitions, 7283 flow [2024-06-27 19:57:56,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7283, PETRI_PLACES=470, PETRI_TRANSITIONS=504} [2024-06-27 19:57:56,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-27 19:57:56,780 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 504 transitions, 7283 flow [2024-06-27 19:57:56,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:56,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:56,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:56,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:57:56,785 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)] === [2024-06-27 19:57:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 14 times [2024-06-27 19:57:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916813010] [2024-06-27 19:57:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916813010] [2024-06-27 19:57:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916813010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:58,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:58,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988320879] [2024-06-27 19:57:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:58,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:58,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:57:58,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 504 transitions, 7283 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:58,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:58,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:57:58,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:58,814 INFO L124 PetriNetUnfolderBase]: 984/1827 cut-off events. [2024-06-27 19:57:58,814 INFO L125 PetriNetUnfolderBase]: For 497952/497952 co-relation queries the response was YES. [2024-06-27 19:57:58,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 1827 events. 984/1827 cut-off events. For 497952/497952 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11276 event pairs, 41 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 19117. Up to 1622 conditions per place. [2024-06-27 19:57:58,842 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 482 selfloop transitions, 32 changer transitions 0/517 dead transitions. [2024-06-27 19:57:58,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 517 transitions, 8390 flow [2024-06-27 19:57:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:57:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:57:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:57:58,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:57:58,844 INFO L175 Difference]: Start difference. First operand has 470 places, 504 transitions, 7283 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:57:58,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 517 transitions, 8390 flow [2024-06-27 19:58:00,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 517 transitions, 8307 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:00,853 INFO L231 Difference]: Finished difference. Result has 471 places, 505 transitions, 7304 flow [2024-06-27 19:58:00,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7200, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7304, PETRI_PLACES=471, PETRI_TRANSITIONS=505} [2024-06-27 19:58:00,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-27 19:58:00,854 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 505 transitions, 7304 flow [2024-06-27 19:58:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:00,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:00,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:58:00,855 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)] === [2024-06-27 19:58:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash 555175025, now seen corresponding path program 15 times [2024-06-27 19:58:00,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:00,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738163383] [2024-06-27 19:58:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:02,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738163383] [2024-06-27 19:58:02,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738163383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:02,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:02,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:02,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706865843] [2024-06-27 19:58:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:02,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:02,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:02,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:02,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 505 transitions, 7304 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:02,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:02,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:02,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:02,764 INFO L124 PetriNetUnfolderBase]: 981/1823 cut-off events. [2024-06-27 19:58:02,764 INFO L125 PetriNetUnfolderBase]: For 485033/485033 co-relation queries the response was YES. [2024-06-27 19:58:02,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19052 conditions, 1823 events. 981/1823 cut-off events. For 485033/485033 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11296 event pairs, 40 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 18840. Up to 1602 conditions per place. [2024-06-27 19:58:02,792 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 475 selfloop transitions, 40 changer transitions 0/518 dead transitions. [2024-06-27 19:58:02,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 518 transitions, 8381 flow [2024-06-27 19:58:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:58:02,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 19:58:02,793 INFO L175 Difference]: Start difference. First operand has 471 places, 505 transitions, 7304 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:58:02,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 518 transitions, 8381 flow [2024-06-27 19:58:04,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 518 transitions, 8263 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:04,856 INFO L231 Difference]: Finished difference. Result has 474 places, 506 transitions, 7282 flow [2024-06-27 19:58:04,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7186, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=474, PETRI_TRANSITIONS=506} [2024-06-27 19:58:04,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-27 19:58:04,856 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 506 transitions, 7282 flow [2024-06-27 19:58:04,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:04,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:04,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:58:04,857 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)] === [2024-06-27 19:58:04,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1330057387, now seen corresponding path program 28 times [2024-06-27 19:58:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:04,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61773094] [2024-06-27 19:58:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:04,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61773094] [2024-06-27 19:58:05,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61773094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:05,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:05,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:05,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240458400] [2024-06-27 19:58:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:05,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:05,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:06,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:06,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 506 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:06,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:06,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:06,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:06,723 INFO L124 PetriNetUnfolderBase]: 989/1841 cut-off events. [2024-06-27 19:58:06,723 INFO L125 PetriNetUnfolderBase]: For 493087/493087 co-relation queries the response was YES. [2024-06-27 19:58:06,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19349 conditions, 1841 events. 989/1841 cut-off events. For 493087/493087 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11418 event pairs, 51 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 19136. Up to 1393 conditions per place. [2024-06-27 19:58:06,752 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 404 selfloop transitions, 118 changer transitions 0/525 dead transitions. [2024-06-27 19:58:06,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 525 transitions, 9390 flow [2024-06-27 19:58:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 19:58:06,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 19:58:06,754 INFO L175 Difference]: Start difference. First operand has 474 places, 506 transitions, 7282 flow. Second operand 11 states and 150 transitions. [2024-06-27 19:58:06,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 525 transitions, 9390 flow [2024-06-27 19:58:08,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 525 transitions, 9304 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:08,933 INFO L231 Difference]: Finished difference. Result has 477 places, 510 transitions, 7585 flow [2024-06-27 19:58:08,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7196, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7585, PETRI_PLACES=477, PETRI_TRANSITIONS=510} [2024-06-27 19:58:08,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 446 predicate places. [2024-06-27 19:58:08,934 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 510 transitions, 7585 flow [2024-06-27 19:58:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:08,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:08,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:08,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:58:08,934 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)] === [2024-06-27 19:58:08,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2068223803, now seen corresponding path program 4 times [2024-06-27 19:58:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009087511] [2024-06-27 19:58:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:09,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009087511] [2024-06-27 19:58:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009087511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:09,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455724040] [2024-06-27 19:58:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:09,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:09,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:09,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 510 transitions, 7585 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) [2024-06-27 19:58:09,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:09,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:09,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:10,501 INFO L124 PetriNetUnfolderBase]: 987/1838 cut-off events. [2024-06-27 19:58:10,502 INFO L125 PetriNetUnfolderBase]: For 490520/490520 co-relation queries the response was YES. [2024-06-27 19:58:10,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19394 conditions, 1838 events. 987/1838 cut-off events. For 490520/490520 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11417 event pairs, 52 based on Foata normal form. 1/1833 useless extension candidates. Maximal degree in co-relation 19180. Up to 1168 conditions per place. [2024-06-27 19:58:10,528 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 170 changer transitions 0/520 dead transitions. [2024-06-27 19:58:10,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 520 transitions, 8660 flow [2024-06-27 19:58:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:58:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:58:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 19:58:10,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 19:58:10,529 INFO L175 Difference]: Start difference. First operand has 477 places, 510 transitions, 7585 flow. Second operand 10 states and 136 transitions. [2024-06-27 19:58:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 520 transitions, 8660 flow [2024-06-27 19:58:12,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 520 transitions, 8279 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:12,612 INFO L231 Difference]: Finished difference. Result has 479 places, 510 transitions, 7551 flow [2024-06-27 19:58:12,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7204, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7551, PETRI_PLACES=479, PETRI_TRANSITIONS=510} [2024-06-27 19:58:12,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-27 19:58:12,613 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 510 transitions, 7551 flow [2024-06-27 19:58:12,613 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) [2024-06-27 19:58:12,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:12,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:12,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:58:12,613 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)] === [2024-06-27 19:58:12,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1330050877, now seen corresponding path program 29 times [2024-06-27 19:58:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034897424] [2024-06-27 19:58:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034897424] [2024-06-27 19:58:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034897424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:13,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004985259] [2024-06-27 19:58:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:13,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:14,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:14,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 510 transitions, 7551 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:14,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:14,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:14,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:14,809 INFO L124 PetriNetUnfolderBase]: 985/1835 cut-off events. [2024-06-27 19:58:14,809 INFO L125 PetriNetUnfolderBase]: For 487604/487604 co-relation queries the response was YES. [2024-06-27 19:58:14,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19117 conditions, 1835 events. 985/1835 cut-off events. For 487604/487604 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11422 event pairs, 53 based on Foata normal form. 1/1830 useless extension candidates. Maximal degree in co-relation 18903. Up to 1459 conditions per place. [2024-06-27 19:58:14,838 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 427 selfloop transitions, 94 changer transitions 0/524 dead transitions. [2024-06-27 19:58:14,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 524 transitions, 8694 flow [2024-06-27 19:58:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:58:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:58:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 19:58:14,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 19:58:14,840 INFO L175 Difference]: Start difference. First operand has 479 places, 510 transitions, 7551 flow. Second operand 12 states and 156 transitions. [2024-06-27 19:58:14,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 524 transitions, 8694 flow [2024-06-27 19:58:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 524 transitions, 8319 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:17,040 INFO L231 Difference]: Finished difference. Result has 480 places, 513 transitions, 7434 flow [2024-06-27 19:58:17,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7434, PETRI_PLACES=480, PETRI_TRANSITIONS=513} [2024-06-27 19:58:17,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-27 19:58:17,041 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 513 transitions, 7434 flow [2024-06-27 19:58:17,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:17,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:17,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:58:17,042 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)] === [2024-06-27 19:58:17,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2068215185, now seen corresponding path program 30 times [2024-06-27 19:58:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537278643] [2024-06-27 19:58:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537278643] [2024-06-27 19:58:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537278643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610834817] [2024-06-27 19:58:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:18,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:18,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 513 transitions, 7434 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:18,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:18,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:18,805 INFO L124 PetriNetUnfolderBase]: 988/1842 cut-off events. [2024-06-27 19:58:18,805 INFO L125 PetriNetUnfolderBase]: For 484500/484500 co-relation queries the response was YES. [2024-06-27 19:58:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19007 conditions, 1842 events. 988/1842 cut-off events. For 484500/484500 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11460 event pairs, 52 based on Foata normal form. 1/1837 useless extension candidates. Maximal degree in co-relation 18793. Up to 1170 conditions per place. [2024-06-27 19:58:18,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 189 changer transitions 0/527 dead transitions. [2024-06-27 19:58:18,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 527 transitions, 9144 flow [2024-06-27 19:58:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:58:18,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:58:18,837 INFO L175 Difference]: Start difference. First operand has 480 places, 513 transitions, 7434 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:58:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 527 transitions, 9144 flow [2024-06-27 19:58:21,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 527 transitions, 8835 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:21,046 INFO L231 Difference]: Finished difference. Result has 484 places, 515 transitions, 7572 flow [2024-06-27 19:58:21,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7125, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7572, PETRI_PLACES=484, PETRI_TRANSITIONS=515} [2024-06-27 19:58:21,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 19:58:21,047 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 515 transitions, 7572 flow [2024-06-27 19:58:21,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:21,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:21,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:21,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:58:21,047 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)] === [2024-06-27 19:58:21,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2068224113, now seen corresponding path program 16 times [2024-06-27 19:58:21,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661833903] [2024-06-27 19:58:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:22,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661833903] [2024-06-27 19:58:22,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661833903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:22,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:22,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:22,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368908829] [2024-06-27 19:58:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:22,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:22,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:22,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 515 transitions, 7572 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:22,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:22,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:22,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:23,154 INFO L124 PetriNetUnfolderBase]: 992/1849 cut-off events. [2024-06-27 19:58:23,154 INFO L125 PetriNetUnfolderBase]: For 503169/503169 co-relation queries the response was YES. [2024-06-27 19:58:23,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19344 conditions, 1849 events. 992/1849 cut-off events. For 503169/503169 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11464 event pairs, 39 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 19128. Up to 1558 conditions per place. [2024-06-27 19:58:23,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 458 selfloop transitions, 67 changer transitions 0/528 dead transitions. [2024-06-27 19:58:23,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 528 transitions, 8699 flow [2024-06-27 19:58:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:58:23,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 19:58:23,189 INFO L175 Difference]: Start difference. First operand has 484 places, 515 transitions, 7572 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:58:23,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 528 transitions, 8699 flow [2024-06-27 19:58:25,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 528 transitions, 8285 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:25,258 INFO L231 Difference]: Finished difference. Result has 487 places, 516 transitions, 7340 flow [2024-06-27 19:58:25,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7158, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7340, PETRI_PLACES=487, PETRI_TRANSITIONS=516} [2024-06-27 19:58:25,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-27 19:58:25,259 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 516 transitions, 7340 flow [2024-06-27 19:58:25,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:58:25,259 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)] === [2024-06-27 19:58:25,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267683, now seen corresponding path program 17 times [2024-06-27 19:58:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218355734] [2024-06-27 19:58:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:26,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:26,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218355734] [2024-06-27 19:58:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218355734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:26,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:26,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165879513] [2024-06-27 19:58:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:26,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:26,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:26,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:26,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 516 transitions, 7340 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:26,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:26,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:26,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:27,451 INFO L124 PetriNetUnfolderBase]: 999/1862 cut-off events. [2024-06-27 19:58:27,451 INFO L125 PetriNetUnfolderBase]: For 509392/509392 co-relation queries the response was YES. [2024-06-27 19:58:27,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19213 conditions, 1862 events. 999/1862 cut-off events. For 509392/509392 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11585 event pairs, 41 based on Foata normal form. 2/1859 useless extension candidates. Maximal degree in co-relation 18996. Up to 1571 conditions per place. [2024-06-27 19:58:27,481 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 462 selfloop transitions, 66 changer transitions 0/531 dead transitions. [2024-06-27 19:58:27,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 531 transitions, 8492 flow [2024-06-27 19:58:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:58:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:58:27,482 INFO L175 Difference]: Start difference. First operand has 487 places, 516 transitions, 7340 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:58:27,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 531 transitions, 8492 flow [2024-06-27 19:58:29,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 531 transitions, 8313 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:58:29,847 INFO L231 Difference]: Finished difference. Result has 490 places, 519 transitions, 7367 flow [2024-06-27 19:58:29,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7161, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7367, PETRI_PLACES=490, PETRI_TRANSITIONS=519} [2024-06-27 19:58:29,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-27 19:58:29,851 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 519 transitions, 7367 flow [2024-06-27 19:58:29,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:29,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:29,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:29,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:58:29,851 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)] === [2024-06-27 19:58:29,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2076566213, now seen corresponding path program 18 times [2024-06-27 19:58:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749117520] [2024-06-27 19:58:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:29,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:31,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749117520] [2024-06-27 19:58:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749117520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:31,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398011878] [2024-06-27 19:58:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:31,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 519 transitions, 7367 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:31,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:31,828 INFO L124 PetriNetUnfolderBase]: 1003/1870 cut-off events. [2024-06-27 19:58:31,828 INFO L125 PetriNetUnfolderBase]: For 516442/516442 co-relation queries the response was YES. [2024-06-27 19:58:31,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19293 conditions, 1870 events. 1003/1870 cut-off events. For 516442/516442 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11732 event pairs, 39 based on Foata normal form. 2/1867 useless extension candidates. Maximal degree in co-relation 19075. Up to 1541 conditions per place. [2024-06-27 19:58:31,854 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 457 selfloop transitions, 74 changer transitions 0/534 dead transitions. [2024-06-27 19:58:31,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 534 transitions, 8806 flow [2024-06-27 19:58:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:58:31,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:58:31,855 INFO L175 Difference]: Start difference. First operand has 490 places, 519 transitions, 7367 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:58:31,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 534 transitions, 8806 flow [2024-06-27 19:58:34,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 534 transitions, 8627 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:58:34,203 INFO L231 Difference]: Finished difference. Result has 493 places, 520 transitions, 7386 flow [2024-06-27 19:58:34,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7188, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7386, PETRI_PLACES=493, PETRI_TRANSITIONS=520} [2024-06-27 19:58:34,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-27 19:58:34,204 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 520 transitions, 7386 flow [2024-06-27 19:58:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:34,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:34,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:58:34,204 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)] === [2024-06-27 19:58:34,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2076555983, now seen corresponding path program 19 times [2024-06-27 19:58:34,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508870643] [2024-06-27 19:58:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508870643] [2024-06-27 19:58:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508870643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141880692] [2024-06-27 19:58:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:35,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:35,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:35,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 520 transitions, 7386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:35,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:35,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:35,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:36,292 INFO L124 PetriNetUnfolderBase]: 1000/1865 cut-off events. [2024-06-27 19:58:36,292 INFO L125 PetriNetUnfolderBase]: For 500963/500963 co-relation queries the response was YES. [2024-06-27 19:58:36,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 1865 events. 1000/1865 cut-off events. For 500963/500963 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11663 event pairs, 40 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 18712. Up to 1565 conditions per place. [2024-06-27 19:58:36,322 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 458 selfloop transitions, 71 changer transitions 0/532 dead transitions. [2024-06-27 19:58:36,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 532 transitions, 8479 flow [2024-06-27 19:58:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:58:36,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 19:58:36,324 INFO L175 Difference]: Start difference. First operand has 493 places, 520 transitions, 7386 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:58:36,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 532 transitions, 8479 flow [2024-06-27 19:58:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 532 transitions, 8184 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:38,634 INFO L231 Difference]: Finished difference. Result has 493 places, 520 transitions, 7237 flow [2024-06-27 19:58:38,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7237, PETRI_PLACES=493, PETRI_TRANSITIONS=520} [2024-06-27 19:58:38,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-27 19:58:38,635 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 520 transitions, 7237 flow [2024-06-27 19:58:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:38,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:38,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:58:38,636 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)] === [2024-06-27 19:58:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2076258755, now seen corresponding path program 31 times [2024-06-27 19:58:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451913518] [2024-06-27 19:58:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451913518] [2024-06-27 19:58:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451913518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:39,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:58:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393999162] [2024-06-27 19:58:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:58:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:58:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:58:39,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:39,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 520 transitions, 7237 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:39,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:39,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:39,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:40,487 INFO L124 PetriNetUnfolderBase]: 998/1863 cut-off events. [2024-06-27 19:58:40,487 INFO L125 PetriNetUnfolderBase]: For 483646/483646 co-relation queries the response was YES. [2024-06-27 19:58:40,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 1863 events. 998/1863 cut-off events. For 483646/483646 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11619 event pairs, 53 based on Foata normal form. 1/1858 useless extension candidates. Maximal degree in co-relation 18213. Up to 1192 conditions per place. [2024-06-27 19:58:40,517 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 340 selfloop transitions, 188 changer transitions 0/531 dead transitions. [2024-06-27 19:58:40,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 531 transitions, 8613 flow [2024-06-27 19:58:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:58:40,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 19:58:40,518 INFO L175 Difference]: Start difference. First operand has 493 places, 520 transitions, 7237 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:58:40,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 531 transitions, 8613 flow [2024-06-27 19:58:42,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 531 transitions, 8226 flow, removed 30 selfloop flow, removed 15 redundant places. [2024-06-27 19:58:42,642 INFO L231 Difference]: Finished difference. Result has 489 places, 520 transitions, 7231 flow [2024-06-27 19:58:42,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6850, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7231, PETRI_PLACES=489, PETRI_TRANSITIONS=520} [2024-06-27 19:58:42,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-27 19:58:42,643 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 520 transitions, 7231 flow [2024-06-27 19:58:42,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:42,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:42,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:42,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:58:42,644 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)] === [2024-06-27 19:58:42,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash 164965663, now seen corresponding path program 7 times [2024-06-27 19:58:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223497823] [2024-06-27 19:58:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:43,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:43,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223497823] [2024-06-27 19:58:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223497823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:43,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42096882] [2024-06-27 19:58:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:43,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:43,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 520 transitions, 7231 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:43,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:43,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:44,089 INFO L124 PetriNetUnfolderBase]: 1017/1900 cut-off events. [2024-06-27 19:58:44,090 INFO L125 PetriNetUnfolderBase]: For 500147/500147 co-relation queries the response was YES. [2024-06-27 19:58:44,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18678 conditions, 1900 events. 1017/1900 cut-off events. For 500147/500147 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11927 event pairs, 47 based on Foata normal form. 2/1900 useless extension candidates. Maximal degree in co-relation 18464. Up to 1674 conditions per place. [2024-06-27 19:58:44,129 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 511 selfloop transitions, 35 changer transitions 0/549 dead transitions. [2024-06-27 19:58:44,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 549 transitions, 8517 flow [2024-06-27 19:58:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:58:44,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:58:44,148 INFO L175 Difference]: Start difference. First operand has 489 places, 520 transitions, 7231 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:58:44,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 549 transitions, 8517 flow [2024-06-27 19:58:46,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 549 transitions, 8082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:58:46,251 INFO L231 Difference]: Finished difference. Result has 492 places, 530 transitions, 7046 flow [2024-06-27 19:58:46,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6810, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7046, PETRI_PLACES=492, PETRI_TRANSITIONS=530} [2024-06-27 19:58:46,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-27 19:58:46,252 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 530 transitions, 7046 flow [2024-06-27 19:58:46,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:46,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:46,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:46,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:58:46,253 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)] === [2024-06-27 19:58:46,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash -318507267, now seen corresponding path program 8 times [2024-06-27 19:58:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114942603] [2024-06-27 19:58:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:47,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:47,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114942603] [2024-06-27 19:58:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114942603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:47,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:47,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155213253] [2024-06-27 19:58:47,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:47,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:47,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:47,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 530 transitions, 7046 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:47,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:47,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:47,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:48,093 INFO L124 PetriNetUnfolderBase]: 1028/1922 cut-off events. [2024-06-27 19:58:48,094 INFO L125 PetriNetUnfolderBase]: For 508266/508266 co-relation queries the response was YES. [2024-06-27 19:58:48,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18585 conditions, 1922 events. 1028/1922 cut-off events. For 508266/508266 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12132 event pairs, 41 based on Foata normal form. 2/1922 useless extension candidates. Maximal degree in co-relation 18367. Up to 1692 conditions per place. [2024-06-27 19:58:48,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 515 selfloop transitions, 36 changer transitions 0/554 dead transitions. [2024-06-27 19:58:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 554 transitions, 8297 flow [2024-06-27 19:58:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:58:48,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:58:48,127 INFO L175 Difference]: Start difference. First operand has 492 places, 530 transitions, 7046 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:58:48,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 554 transitions, 8297 flow [2024-06-27 19:58:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 554 transitions, 8204 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:50,447 INFO L231 Difference]: Finished difference. Result has 499 places, 536 transitions, 7151 flow [2024-06-27 19:58:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7151, PETRI_PLACES=499, PETRI_TRANSITIONS=536} [2024-06-27 19:58:50,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-27 19:58:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 536 transitions, 7151 flow [2024-06-27 19:58:50,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:50,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:50,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:58:50,461 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)] === [2024-06-27 19:58:50,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 563753789, now seen corresponding path program 9 times [2024-06-27 19:58:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:50,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455371521] [2024-06-27 19:58:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:50,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:51,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:51,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455371521] [2024-06-27 19:58:51,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455371521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:51,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:51,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:51,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627611025] [2024-06-27 19:58:51,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:51,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:51,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:51,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:51,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:51,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:51,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 536 transitions, 7151 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:51,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:51,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:51,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:52,102 INFO L124 PetriNetUnfolderBase]: 1035/1936 cut-off events. [2024-06-27 19:58:52,102 INFO L125 PetriNetUnfolderBase]: For 508696/508696 co-relation queries the response was YES. [2024-06-27 19:58:52,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18690 conditions, 1936 events. 1035/1936 cut-off events. For 508696/508696 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 12271 event pairs, 41 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 18470. Up to 1705 conditions per place. [2024-06-27 19:58:52,141 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 515 selfloop transitions, 41 changer transitions 0/559 dead transitions. [2024-06-27 19:58:52,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 559 transitions, 8383 flow [2024-06-27 19:58:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:58:52,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:58:52,142 INFO L175 Difference]: Start difference. First operand has 499 places, 536 transitions, 7151 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:58:52,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 559 transitions, 8383 flow [2024-06-27 19:58:54,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 559 transitions, 8285 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:54,574 INFO L231 Difference]: Finished difference. Result has 505 places, 539 transitions, 7216 flow [2024-06-27 19:58:54,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7053, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7216, PETRI_PLACES=505, PETRI_TRANSITIONS=539} [2024-06-27 19:58:54,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-27 19:58:54,574 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 539 transitions, 7216 flow [2024-06-27 19:58:54,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:54,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:58:54,575 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)] === [2024-06-27 19:58:54,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1192105085, now seen corresponding path program 10 times [2024-06-27 19:58:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958604843] [2024-06-27 19:58:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958604843] [2024-06-27 19:58:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958604843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230515920] [2024-06-27 19:58:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:55,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:55,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 539 transitions, 7216 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:55,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:55,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:55,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:56,156 INFO L124 PetriNetUnfolderBase]: 1045/1954 cut-off events. [2024-06-27 19:58:56,156 INFO L125 PetriNetUnfolderBase]: For 515797/515797 co-relation queries the response was YES. [2024-06-27 19:58:56,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18874 conditions, 1954 events. 1045/1954 cut-off events. For 515797/515797 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12398 event pairs, 46 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 18654. Up to 1746 conditions per place. [2024-06-27 19:58:56,188 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 527 selfloop transitions, 32 changer transitions 0/562 dead transitions. [2024-06-27 19:58:56,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 562 transitions, 8492 flow [2024-06-27 19:58:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:58:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:58:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:58:56,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:58:56,190 INFO L175 Difference]: Start difference. First operand has 505 places, 539 transitions, 7216 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:58:56,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 562 transitions, 8492 flow [2024-06-27 19:58:58,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 562 transitions, 8365 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 19:58:58,408 INFO L231 Difference]: Finished difference. Result has 511 places, 544 transitions, 7283 flow [2024-06-27 19:58:58,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7089, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7283, PETRI_PLACES=511, PETRI_TRANSITIONS=544} [2024-06-27 19:58:58,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 480 predicate places. [2024-06-27 19:58:58,408 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 544 transitions, 7283 flow [2024-06-27 19:58:58,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:58,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:58,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:58,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:58:58,409 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)] === [2024-06-27 19:58:58,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1065366463, now seen corresponding path program 11 times [2024-06-27 19:58:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404914469] [2024-06-27 19:58:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:59,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404914469] [2024-06-27 19:58:59,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404914469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:59,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:59,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:58:59,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748833160] [2024-06-27 19:58:59,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:59,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:58:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:58:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:58:59,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:58:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 544 transitions, 7283 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:58:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:59,980 INFO L124 PetriNetUnfolderBase]: 1049/1962 cut-off events. [2024-06-27 19:58:59,980 INFO L125 PetriNetUnfolderBase]: For 522583/522583 co-relation queries the response was YES. [2024-06-27 19:59:00,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18940 conditions, 1962 events. 1049/1962 cut-off events. For 522583/522583 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12441 event pairs, 46 based on Foata normal form. 2/1960 useless extension candidates. Maximal degree in co-relation 18717. Up to 1754 conditions per place. [2024-06-27 19:59:00,076 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 531 selfloop transitions, 30 changer transitions 0/564 dead transitions. [2024-06-27 19:59:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 564 transitions, 8526 flow [2024-06-27 19:59:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:59:00,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:59:00,078 INFO L175 Difference]: Start difference. First operand has 511 places, 544 transitions, 7283 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:59:00,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 564 transitions, 8526 flow [2024-06-27 19:59:02,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 564 transitions, 8426 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:02,505 INFO L231 Difference]: Finished difference. Result has 517 places, 547 transitions, 7331 flow [2024-06-27 19:59:02,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7183, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7331, PETRI_PLACES=517, PETRI_TRANSITIONS=547} [2024-06-27 19:59:02,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-27 19:59:02,506 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 547 transitions, 7331 flow [2024-06-27 19:59:02,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:02,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:02,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:59:02,507 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)] === [2024-06-27 19:59:02,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1536710879, now seen corresponding path program 12 times [2024-06-27 19:59:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:02,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42973328] [2024-06-27 19:59:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:03,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:03,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42973328] [2024-06-27 19:59:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42973328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:03,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:03,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536646569] [2024-06-27 19:59:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:03,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:03,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:03,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:03,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 547 transitions, 7331 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:03,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:03,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:03,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:04,207 INFO L124 PetriNetUnfolderBase]: 1053/1972 cut-off events. [2024-06-27 19:59:04,207 INFO L125 PetriNetUnfolderBase]: For 529404/529404 co-relation queries the response was YES. [2024-06-27 19:59:04,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19047 conditions, 1972 events. 1053/1972 cut-off events. For 529404/529404 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12548 event pairs, 38 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 18821. Up to 1739 conditions per place. [2024-06-27 19:59:04,241 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 527 selfloop transitions, 35 changer transitions 0/565 dead transitions. [2024-06-27 19:59:04,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 565 transitions, 8547 flow [2024-06-27 19:59:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:59:04,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 19:59:04,242 INFO L175 Difference]: Start difference. First operand has 517 places, 547 transitions, 7331 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:59:04,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 565 transitions, 8547 flow [2024-06-27 19:59:06,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 565 transitions, 8375 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:06,916 INFO L231 Difference]: Finished difference. Result has 516 places, 548 transitions, 7281 flow [2024-06-27 19:59:06,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7281, PETRI_PLACES=516, PETRI_TRANSITIONS=548} [2024-06-27 19:59:06,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-06-27 19:59:06,917 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 548 transitions, 7281 flow [2024-06-27 19:59:06,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:06,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:06,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:06,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:59:06,917 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)] === [2024-06-27 19:59:06,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1652002049, now seen corresponding path program 13 times [2024-06-27 19:59:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275584016] [2024-06-27 19:59:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:07,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275584016] [2024-06-27 19:59:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275584016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:07,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:07,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:07,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635310827] [2024-06-27 19:59:07,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:07,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:07,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:07,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 548 transitions, 7281 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:08,638 INFO L124 PetriNetUnfolderBase]: 1050/1967 cut-off events. [2024-06-27 19:59:08,639 INFO L125 PetriNetUnfolderBase]: For 511552/511552 co-relation queries the response was YES. [2024-06-27 19:59:08,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 1967 events. 1050/1967 cut-off events. For 511552/511552 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12536 event pairs, 36 based on Foata normal form. 2/1967 useless extension candidates. Maximal degree in co-relation 18319. Up to 1757 conditions per place. [2024-06-27 19:59:08,670 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 533 selfloop transitions, 29 changer transitions 0/565 dead transitions. [2024-06-27 19:59:08,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 565 transitions, 8464 flow [2024-06-27 19:59:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:59:08,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:59:08,671 INFO L175 Difference]: Start difference. First operand has 516 places, 548 transitions, 7281 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:59:08,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 565 transitions, 8464 flow [2024-06-27 19:59:11,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 565 transitions, 8306 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:11,197 INFO L231 Difference]: Finished difference. Result has 515 places, 549 transitions, 7202 flow [2024-06-27 19:59:11,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7123, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7202, PETRI_PLACES=515, PETRI_TRANSITIONS=549} [2024-06-27 19:59:11,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 484 predicate places. [2024-06-27 19:59:11,198 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 549 transitions, 7202 flow [2024-06-27 19:59:11,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:11,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:11,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:11,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:59:11,199 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)] === [2024-06-27 19:59:11,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -341169747, now seen corresponding path program 32 times [2024-06-27 19:59:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:11,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784642392] [2024-06-27 19:59:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:11,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784642392] [2024-06-27 19:59:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784642392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:12,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239539591] [2024-06-27 19:59:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:12,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:12,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:12,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 549 transitions, 7202 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:12,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:12,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:12,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:13,277 INFO L124 PetriNetUnfolderBase]: 1076/2015 cut-off events. [2024-06-27 19:59:13,277 INFO L125 PetriNetUnfolderBase]: For 525737/525737 co-relation queries the response was YES. [2024-06-27 19:59:13,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18936 conditions, 2015 events. 1076/2015 cut-off events. For 525737/525737 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12852 event pairs, 51 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 18717. Up to 1677 conditions per place. [2024-06-27 19:59:13,304 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 510 selfloop transitions, 77 changer transitions 0/590 dead transitions. [2024-06-27 19:59:13,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 590 transitions, 9691 flow [2024-06-27 19:59:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 19:59:13,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-27 19:59:13,305 INFO L175 Difference]: Start difference. First operand has 515 places, 549 transitions, 7202 flow. Second operand 12 states and 161 transitions. [2024-06-27 19:59:13,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 590 transitions, 9691 flow [2024-06-27 19:59:15,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 590 transitions, 9432 flow, removed 51 selfloop flow, removed 14 redundant places. [2024-06-27 19:59:15,705 INFO L231 Difference]: Finished difference. Result has 516 places, 564 transitions, 7428 flow [2024-06-27 19:59:15,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6945, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7428, PETRI_PLACES=516, PETRI_TRANSITIONS=564} [2024-06-27 19:59:15,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-06-27 19:59:15,705 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 564 transitions, 7428 flow [2024-06-27 19:59:15,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:15,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:15,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:15,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:59:15,706 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)] === [2024-06-27 19:59:15,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:15,706 INFO L85 PathProgramCache]: Analyzing trace with hash 76885379, now seen corresponding path program 33 times [2024-06-27 19:59:15,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853060713] [2024-06-27 19:59:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:16,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:16,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853060713] [2024-06-27 19:59:16,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853060713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:16,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:16,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:16,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121174944] [2024-06-27 19:59:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:16,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:16,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:16,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 564 transitions, 7428 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:16,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:16,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:16,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:17,404 INFO L124 PetriNetUnfolderBase]: 1072/2008 cut-off events. [2024-06-27 19:59:17,405 INFO L125 PetriNetUnfolderBase]: For 507998/507998 co-relation queries the response was YES. [2024-06-27 19:59:17,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18594 conditions, 2008 events. 1072/2008 cut-off events. For 507998/507998 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12815 event pairs, 50 based on Foata normal form. 2/2008 useless extension candidates. Maximal degree in co-relation 18375. Up to 1729 conditions per place. [2024-06-27 19:59:17,433 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 522 selfloop transitions, 58 changer transitions 0/583 dead transitions. [2024-06-27 19:59:17,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 583 transitions, 8966 flow [2024-06-27 19:59:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 19:59:17,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:59:17,434 INFO L175 Difference]: Start difference. First operand has 516 places, 564 transitions, 7428 flow. Second operand 12 states and 152 transitions. [2024-06-27 19:59:17,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 583 transitions, 8966 flow [2024-06-27 19:59:19,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 583 transitions, 8693 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:19,803 INFO L231 Difference]: Finished difference. Result has 520 places, 564 transitions, 7279 flow [2024-06-27 19:59:19,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7279, PETRI_PLACES=520, PETRI_TRANSITIONS=564} [2024-06-27 19:59:19,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 489 predicate places. [2024-06-27 19:59:19,804 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 564 transitions, 7279 flow [2024-06-27 19:59:19,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:19,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:19,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:59:19,805 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)] === [2024-06-27 19:59:19,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash -496257311, now seen corresponding path program 1 times [2024-06-27 19:59:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926931159] [2024-06-27 19:59:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:20,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926931159] [2024-06-27 19:59:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926931159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:20,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628625162] [2024-06-27 19:59:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:20,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:20,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:20,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 564 transitions, 7279 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:20,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:20,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:20,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:21,643 INFO L124 PetriNetUnfolderBase]: 1076/2016 cut-off events. [2024-06-27 19:59:21,643 INFO L125 PetriNetUnfolderBase]: For 516927/516927 co-relation queries the response was YES. [2024-06-27 19:59:21,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18509 conditions, 2016 events. 1076/2016 cut-off events. For 516927/516927 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12920 event pairs, 43 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 18292. Up to 1719 conditions per place. [2024-06-27 19:59:21,671 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 529 selfloop transitions, 53 changer transitions 0/585 dead transitions. [2024-06-27 19:59:21,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 585 transitions, 8527 flow [2024-06-27 19:59:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:59:21,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:59:21,672 INFO L175 Difference]: Start difference. First operand has 520 places, 564 transitions, 7279 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:59:21,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 585 transitions, 8527 flow [2024-06-27 19:59:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 585 transitions, 8359 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:23,897 INFO L231 Difference]: Finished difference. Result has 519 places, 565 transitions, 7261 flow [2024-06-27 19:59:23,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7111, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7261, PETRI_PLACES=519, PETRI_TRANSITIONS=565} [2024-06-27 19:59:23,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-27 19:59:23,898 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 565 transitions, 7261 flow [2024-06-27 19:59:23,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:23,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:23,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:59:23,899 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)] === [2024-06-27 19:59:23,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1567286219, now seen corresponding path program 2 times [2024-06-27 19:59:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923712749] [2024-06-27 19:59:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:24,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:24,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923712749] [2024-06-27 19:59:24,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923712749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:24,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787995130] [2024-06-27 19:59:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:24,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:24,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 565 transitions, 7261 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:24,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:24,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:24,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:25,706 INFO L124 PetriNetUnfolderBase]: 1080/2024 cut-off events. [2024-06-27 19:59:25,706 INFO L125 PetriNetUnfolderBase]: For 523455/523455 co-relation queries the response was YES. [2024-06-27 19:59:25,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18577 conditions, 2024 events. 1080/2024 cut-off events. For 523455/523455 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12982 event pairs, 46 based on Foata normal form. 2/2024 useless extension candidates. Maximal degree in co-relation 18362. Up to 1764 conditions per place. [2024-06-27 19:59:25,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 532 selfloop transitions, 50 changer transitions 0/585 dead transitions. [2024-06-27 19:59:25,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 8509 flow [2024-06-27 19:59:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:59:25,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 19:59:25,738 INFO L175 Difference]: Start difference. First operand has 519 places, 565 transitions, 7261 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:59:25,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 8509 flow [2024-06-27 19:59:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 585 transitions, 8377 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:28,162 INFO L231 Difference]: Finished difference. Result has 521 places, 566 transitions, 7271 flow [2024-06-27 19:59:28,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7129, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7271, PETRI_PLACES=521, PETRI_TRANSITIONS=566} [2024-06-27 19:59:28,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 490 predicate places. [2024-06-27 19:59:28,163 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 566 transitions, 7271 flow [2024-06-27 19:59:28,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:28,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:28,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:28,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:59:28,163 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)] === [2024-06-27 19:59:28,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -584823071, now seen corresponding path program 3 times [2024-06-27 19:59:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:28,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061363623] [2024-06-27 19:59:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:29,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:29,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061363623] [2024-06-27 19:59:29,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061363623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:29,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:29,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:29,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453648799] [2024-06-27 19:59:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:29,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:29,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:29,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:29,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:29,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 566 transitions, 7271 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:29,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:29,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:29,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:29,965 INFO L124 PetriNetUnfolderBase]: 1093/2051 cut-off events. [2024-06-27 19:59:29,965 INFO L125 PetriNetUnfolderBase]: For 531808/531808 co-relation queries the response was YES. [2024-06-27 19:59:29,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 2051 events. 1093/2051 cut-off events. For 531808/531808 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13242 event pairs, 57 based on Foata normal form. 2/2048 useless extension candidates. Maximal degree in co-relation 18489. Up to 1803 conditions per place. [2024-06-27 19:59:29,996 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 552 selfloop transitions, 32 changer transitions 0/587 dead transitions. [2024-06-27 19:59:29,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 587 transitions, 8533 flow [2024-06-27 19:59:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 19:59:29,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 19:59:29,997 INFO L175 Difference]: Start difference. First operand has 521 places, 566 transitions, 7271 flow. Second operand 12 states and 145 transitions. [2024-06-27 19:59:29,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 587 transitions, 8533 flow [2024-06-27 19:59:32,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 587 transitions, 8401 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:32,341 INFO L231 Difference]: Finished difference. Result has 526 places, 569 transitions, 7263 flow [2024-06-27 19:59:32,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7139, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7263, PETRI_PLACES=526, PETRI_TRANSITIONS=569} [2024-06-27 19:59:32,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-27 19:59:32,342 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 569 transitions, 7263 flow [2024-06-27 19:59:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:32,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:32,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:59:32,342 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)] === [2024-06-27 19:59:32,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1217050467, now seen corresponding path program 4 times [2024-06-27 19:59:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107284422] [2024-06-27 19:59:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:33,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:33,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107284422] [2024-06-27 19:59:33,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107284422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:33,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:33,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:33,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020563921] [2024-06-27 19:59:33,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:33,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:33,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:33,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:33,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 569 transitions, 7263 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:33,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:33,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:33,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:34,375 INFO L124 PetriNetUnfolderBase]: 1100/2064 cut-off events. [2024-06-27 19:59:34,375 INFO L125 PetriNetUnfolderBase]: For 538495/538495 co-relation queries the response was YES. [2024-06-27 19:59:34,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18806 conditions, 2064 events. 1100/2064 cut-off events. For 538495/538495 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13338 event pairs, 57 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 18587. Up to 1847 conditions per place. [2024-06-27 19:59:34,407 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 552 selfloop transitions, 31 changer transitions 0/586 dead transitions. [2024-06-27 19:59:34,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 586 transitions, 8535 flow [2024-06-27 19:59:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 19:59:34,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 19:59:34,409 INFO L175 Difference]: Start difference. First operand has 526 places, 569 transitions, 7263 flow. Second operand 12 states and 142 transitions. [2024-06-27 19:59:34,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 586 transitions, 8535 flow [2024-06-27 19:59:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 586 transitions, 8441 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:36,828 INFO L231 Difference]: Finished difference. Result has 531 places, 572 transitions, 7314 flow [2024-06-27 19:59:36,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7314, PETRI_PLACES=531, PETRI_TRANSITIONS=572} [2024-06-27 19:59:36,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-27 19:59:36,829 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 572 transitions, 7314 flow [2024-06-27 19:59:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:59:36,829 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)] === [2024-06-27 19:59:36,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1062384671, now seen corresponding path program 5 times [2024-06-27 19:59:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758659134] [2024-06-27 19:59:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758659134] [2024-06-27 19:59:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758659134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844381427] [2024-06-27 19:59:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:37,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:37,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 572 transitions, 7314 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:37,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:37,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:37,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:38,558 INFO L124 PetriNetUnfolderBase]: 1104/2070 cut-off events. [2024-06-27 19:59:38,559 INFO L125 PetriNetUnfolderBase]: For 545298/545298 co-relation queries the response was YES. [2024-06-27 19:59:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18893 conditions, 2070 events. 1104/2070 cut-off events. For 545298/545298 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 13385 event pairs, 60 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 18672. Up to 1802 conditions per place. [2024-06-27 19:59:38,594 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 541 selfloop transitions, 47 changer transitions 0/591 dead transitions. [2024-06-27 19:59:38,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 591 transitions, 8576 flow [2024-06-27 19:59:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:59:38,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 19:59:38,595 INFO L175 Difference]: Start difference. First operand has 531 places, 572 transitions, 7314 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:59:38,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 591 transitions, 8576 flow [2024-06-27 19:59:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 591 transitions, 8481 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:41,223 INFO L231 Difference]: Finished difference. Result has 533 places, 573 transitions, 7364 flow [2024-06-27 19:59:41,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7364, PETRI_PLACES=533, PETRI_TRANSITIONS=573} [2024-06-27 19:59:41,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 502 predicate places. [2024-06-27 19:59:41,224 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 573 transitions, 7364 flow [2024-06-27 19:59:41,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:41,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:41,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:59:41,224 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)] === [2024-06-27 19:59:41,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1211688087, now seen corresponding path program 6 times [2024-06-27 19:59:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251522902] [2024-06-27 19:59:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251522902] [2024-06-27 19:59:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251522902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:42,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:59:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138304503] [2024-06-27 19:59:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:42,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:59:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:59:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:59:42,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:42,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 573 transitions, 7364 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:42,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:42,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:42,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:43,186 INFO L124 PetriNetUnfolderBase]: 1108/2078 cut-off events. [2024-06-27 19:59:43,186 INFO L125 PetriNetUnfolderBase]: For 552341/552341 co-relation queries the response was YES. [2024-06-27 19:59:43,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19018 conditions, 2078 events. 1108/2078 cut-off events. For 552341/552341 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 13428 event pairs, 64 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 18796. Up to 1826 conditions per place. [2024-06-27 19:59:43,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 542 selfloop transitions, 46 changer transitions 0/591 dead transitions. [2024-06-27 19:59:43,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 591 transitions, 8626 flow [2024-06-27 19:59:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:59:43,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 19:59:43,221 INFO L175 Difference]: Start difference. First operand has 533 places, 573 transitions, 7364 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:59:43,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 591 transitions, 8626 flow [2024-06-27 19:59:45,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 591 transitions, 8497 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:45,882 INFO L231 Difference]: Finished difference. Result has 535 places, 574 transitions, 7377 flow [2024-06-27 19:59:45,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7377, PETRI_PLACES=535, PETRI_TRANSITIONS=574} [2024-06-27 19:59:45,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-27 19:59:45,882 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 574 transitions, 7377 flow [2024-06-27 19:59:45,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:45,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:45,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:59:45,883 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)] === [2024-06-27 19:59:45,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:45,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1211472606, now seen corresponding path program 1 times [2024-06-27 19:59:45,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:45,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901264767] [2024-06-27 19:59:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:45,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901264767] [2024-06-27 19:59:46,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901264767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:46,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:46,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68083501] [2024-06-27 19:59:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:47,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:47,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 574 transitions, 7377 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:47,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:47,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:47,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:47,962 INFO L124 PetriNetUnfolderBase]: 1124/2114 cut-off events. [2024-06-27 19:59:47,963 INFO L125 PetriNetUnfolderBase]: For 661413/661413 co-relation queries the response was YES. [2024-06-27 19:59:47,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19232 conditions, 2114 events. 1124/2114 cut-off events. For 661413/661413 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 13738 event pairs, 68 based on Foata normal form. 10/2120 useless extension candidates. Maximal degree in co-relation 19009. Up to 1819 conditions per place. [2024-06-27 19:59:47,997 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 540 selfloop transitions, 49 changer transitions 4/596 dead transitions. [2024-06-27 19:59:47,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 596 transitions, 8697 flow [2024-06-27 19:59:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 19:59:47,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 19:59:47,998 INFO L175 Difference]: Start difference. First operand has 535 places, 574 transitions, 7377 flow. Second operand 12 states and 151 transitions. [2024-06-27 19:59:47,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 596 transitions, 8697 flow [2024-06-27 19:59:50,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 596 transitions, 8565 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:50,619 INFO L231 Difference]: Finished difference. Result has 538 places, 574 transitions, 7362 flow [2024-06-27 19:59:50,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7362, PETRI_PLACES=538, PETRI_TRANSITIONS=574} [2024-06-27 19:59:50,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 507 predicate places. [2024-06-27 19:59:50,620 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 574 transitions, 7362 flow [2024-06-27 19:59:50,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:50,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:50,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:59:50,621 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)] === [2024-06-27 19:59:50,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1211480325, now seen corresponding path program 1 times [2024-06-27 19:59:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106314292] [2024-06-27 19:59:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:52,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106314292] [2024-06-27 19:59:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106314292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:52,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599020575] [2024-06-27 19:59:52,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:52,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:52,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 574 transitions, 7362 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:52,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:52,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:53,431 INFO L124 PetriNetUnfolderBase]: 1121/2109 cut-off events. [2024-06-27 19:59:53,431 INFO L125 PetriNetUnfolderBase]: For 552502/552502 co-relation queries the response was YES. [2024-06-27 19:59:53,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19216 conditions, 2109 events. 1121/2109 cut-off events. For 552502/552502 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13700 event pairs, 68 based on Foata normal form. 1/2106 useless extension candidates. Maximal degree in co-relation 18992. Up to 1846 conditions per place. [2024-06-27 19:59:53,463 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 537 selfloop transitions, 53 changer transitions 0/593 dead transitions. [2024-06-27 19:59:53,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 593 transitions, 8640 flow [2024-06-27 19:59:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:59:53,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 19:59:53,465 INFO L175 Difference]: Start difference. First operand has 538 places, 574 transitions, 7362 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:59:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 593 transitions, 8640 flow [2024-06-27 19:59:56,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 593 transitions, 8518 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:56,174 INFO L231 Difference]: Finished difference. Result has 540 places, 576 transitions, 7411 flow [2024-06-27 19:59:56,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7411, PETRI_PLACES=540, PETRI_TRANSITIONS=576} [2024-06-27 19:59:56,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 509 predicate places. [2024-06-27 19:59:56,175 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 576 transitions, 7411 flow [2024-06-27 19:59:56,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:56,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:56,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:56,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:59:56,175 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)] === [2024-06-27 19:59:56,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1290661965, now seen corresponding path program 2 times [2024-06-27 19:59:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:56,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386810635] [2024-06-27 19:59:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386810635] [2024-06-27 19:59:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386810635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:57,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:57,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565466781] [2024-06-27 19:59:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:57,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:57,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:59:57,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 576 transitions, 7411 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:57,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:57,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:59:57,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:58,974 INFO L124 PetriNetUnfolderBase]: 1119/2106 cut-off events. [2024-06-27 19:59:58,974 INFO L125 PetriNetUnfolderBase]: For 545367/545367 co-relation queries the response was YES. [2024-06-27 19:59:59,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19038 conditions, 2106 events. 1119/2106 cut-off events. For 545367/545367 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13689 event pairs, 68 based on Foata normal form. 1/2103 useless extension candidates. Maximal degree in co-relation 18813. Up to 1843 conditions per place. [2024-06-27 19:59:59,007 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 538 selfloop transitions, 52 changer transitions 0/593 dead transitions. [2024-06-27 19:59:59,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 593 transitions, 8633 flow [2024-06-27 19:59:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:59:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:59:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:59:59,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 19:59:59,008 INFO L175 Difference]: Start difference. First operand has 540 places, 576 transitions, 7411 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:59:59,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 593 transitions, 8633 flow [2024-06-27 20:00:01,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 593 transitions, 8447 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:01,726 INFO L231 Difference]: Finished difference. Result has 542 places, 576 transitions, 7334 flow [2024-06-27 20:00:01,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7225, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7334, PETRI_PLACES=542, PETRI_TRANSITIONS=576} [2024-06-27 20:00:01,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 511 predicate places. [2024-06-27 20:00:01,727 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 576 transitions, 7334 flow [2024-06-27 20:00:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:01,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:01,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:01,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 20:00:01,728 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)] === [2024-06-27 20:00:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash -177902819, now seen corresponding path program 7 times [2024-06-27 20:00:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235256587] [2024-06-27 20:00:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235256587] [2024-06-27 20:00:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235256587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:02,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:02,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068907775] [2024-06-27 20:00:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:02,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:02,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 576 transitions, 7334 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:02,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:02,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:02,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:03,700 INFO L124 PetriNetUnfolderBase]: 1123/2114 cut-off events. [2024-06-27 20:00:03,701 INFO L125 PetriNetUnfolderBase]: For 565758/565758 co-relation queries the response was YES. [2024-06-27 20:00:03,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 2114 events. 1123/2114 cut-off events. For 565758/565758 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 13750 event pairs, 68 based on Foata normal form. 2/2112 useless extension candidates. Maximal degree in co-relation 18875. Up to 1818 conditions per place. [2024-06-27 20:00:03,732 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 530 selfloop transitions, 59 changer transitions 0/592 dead transitions. [2024-06-27 20:00:03,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 592 transitions, 8594 flow [2024-06-27 20:00:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:00:03,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 20:00:03,733 INFO L175 Difference]: Start difference. First operand has 542 places, 576 transitions, 7334 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:00:03,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 592 transitions, 8594 flow [2024-06-27 20:00:06,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 592 transitions, 8464 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:06,514 INFO L231 Difference]: Finished difference. Result has 542 places, 577 transitions, 7374 flow [2024-06-27 20:00:06,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7204, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7374, PETRI_PLACES=542, PETRI_TRANSITIONS=577} [2024-06-27 20:00:06,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 511 predicate places. [2024-06-27 20:00:06,515 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 577 transitions, 7374 flow [2024-06-27 20:00:06,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:06,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:06,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 20:00:06,516 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)] === [2024-06-27 20:00:06,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -371842229, now seen corresponding path program 8 times [2024-06-27 20:00:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:06,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652775611] [2024-06-27 20:00:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652775611] [2024-06-27 20:00:07,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652775611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:07,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432525110] [2024-06-27 20:00:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:07,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:07,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 577 transitions, 7374 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:07,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:07,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:07,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:08,226 INFO L124 PetriNetUnfolderBase]: 1127/2122 cut-off events. [2024-06-27 20:00:08,226 INFO L125 PetriNetUnfolderBase]: For 573529/573529 co-relation queries the response was YES. [2024-06-27 20:00:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19249 conditions, 2122 events. 1127/2122 cut-off events. For 573529/573529 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 13823 event pairs, 68 based on Foata normal form. 2/2120 useless extension candidates. Maximal degree in co-relation 19022. Up to 1859 conditions per place. [2024-06-27 20:00:08,260 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 541 selfloop transitions, 49 changer transitions 0/593 dead transitions. [2024-06-27 20:00:08,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 593 transitions, 8638 flow [2024-06-27 20:00:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:08,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:00:08,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 20:00:08,262 INFO L175 Difference]: Start difference. First operand has 542 places, 577 transitions, 7374 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:00:08,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 593 transitions, 8638 flow [2024-06-27 20:00:11,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 593 transitions, 8478 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:11,103 INFO L231 Difference]: Finished difference. Result has 544 places, 578 transitions, 7366 flow [2024-06-27 20:00:11,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7214, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7366, PETRI_PLACES=544, PETRI_TRANSITIONS=578} [2024-06-27 20:00:11,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 513 predicate places. [2024-06-27 20:00:11,104 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 578 transitions, 7366 flow [2024-06-27 20:00:11,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:11,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:11,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:11,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 20:00:11,104 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)] === [2024-06-27 20:00:11,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash -377204609, now seen corresponding path program 9 times [2024-06-27 20:00:11,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:11,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318955851] [2024-06-27 20:00:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:11,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318955851] [2024-06-27 20:00:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318955851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794541158] [2024-06-27 20:00:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:12,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:12,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 578 transitions, 7366 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:12,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:12,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:12,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:13,013 INFO L124 PetriNetUnfolderBase]: 1131/2130 cut-off events. [2024-06-27 20:00:13,013 INFO L125 PetriNetUnfolderBase]: For 580210/580210 co-relation queries the response was YES. [2024-06-27 20:00:13,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19304 conditions, 2130 events. 1131/2130 cut-off events. For 580210/580210 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 13865 event pairs, 70 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 19076. Up to 1875 conditions per place. [2024-06-27 20:00:13,052 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 545 selfloop transitions, 47 changer transitions 0/595 dead transitions. [2024-06-27 20:00:13,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 595 transitions, 8651 flow [2024-06-27 20:00:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:00:13,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 20:00:13,054 INFO L175 Difference]: Start difference. First operand has 544 places, 578 transitions, 7366 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:00:13,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 595 transitions, 8651 flow [2024-06-27 20:00:15,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 595 transitions, 8507 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:15,930 INFO L231 Difference]: Finished difference. Result has 547 places, 580 transitions, 7393 flow [2024-06-27 20:00:15,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7393, PETRI_PLACES=547, PETRI_TRANSITIONS=580} [2024-06-27 20:00:15,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-27 20:00:15,931 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 580 transitions, 7393 flow [2024-06-27 20:00:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:15,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:15,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 20:00:15,931 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)] === [2024-06-27 20:00:15,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 175398671, now seen corresponding path program 10 times [2024-06-27 20:00:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839525680] [2024-06-27 20:00:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:16,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839525680] [2024-06-27 20:00:16,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839525680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:16,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278498655] [2024-06-27 20:00:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:17,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:17,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 580 transitions, 7393 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:17,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:17,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:17,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:17,831 INFO L124 PetriNetUnfolderBase]: 1135/2138 cut-off events. [2024-06-27 20:00:17,831 INFO L125 PetriNetUnfolderBase]: For 587259/587259 co-relation queries the response was YES. [2024-06-27 20:00:17,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19382 conditions, 2138 events. 1135/2138 cut-off events. For 587259/587259 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13942 event pairs, 68 based on Foata normal form. 2/2136 useless extension candidates. Maximal degree in co-relation 19152. Up to 1878 conditions per place. [2024-06-27 20:00:17,867 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 548 selfloop transitions, 46 changer transitions 0/597 dead transitions. [2024-06-27 20:00:17,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 597 transitions, 8671 flow [2024-06-27 20:00:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:00:17,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 20:00:17,869 INFO L175 Difference]: Start difference. First operand has 547 places, 580 transitions, 7393 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:00:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 597 transitions, 8671 flow [2024-06-27 20:00:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 597 transitions, 8535 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:20,842 INFO L231 Difference]: Finished difference. Result has 550 places, 581 transitions, 7407 flow [2024-06-27 20:00:20,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7257, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7407, PETRI_PLACES=550, PETRI_TRANSITIONS=581} [2024-06-27 20:00:20,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-27 20:00:20,843 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 581 transitions, 7407 flow [2024-06-27 20:00:20,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:20,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:20,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:20,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 20:00:20,843 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)] === [2024-06-27 20:00:20,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash 382205933, now seen corresponding path program 3 times [2024-06-27 20:00:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:20,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053150150] [2024-06-27 20:00:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:20,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:22,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053150150] [2024-06-27 20:00:22,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053150150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:22,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:22,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:22,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826701451] [2024-06-27 20:00:22,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:22,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:23,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 581 transitions, 7407 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:23,979 INFO L124 PetriNetUnfolderBase]: 1133/2135 cut-off events. [2024-06-27 20:00:23,979 INFO L125 PetriNetUnfolderBase]: For 564193/564193 co-relation queries the response was YES. [2024-06-27 20:00:24,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 2135 events. 1133/2135 cut-off events. For 564193/564193 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13946 event pairs, 70 based on Foata normal form. 1/2132 useless extension candidates. Maximal degree in co-relation 18910. Up to 1798 conditions per place. [2024-06-27 20:00:24,015 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 512 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2024-06-27 20:00:24,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 596 transitions, 8629 flow [2024-06-27 20:00:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 20:00:24,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 20:00:24,016 INFO L175 Difference]: Start difference. First operand has 550 places, 581 transitions, 7407 flow. Second operand 12 states and 148 transitions. [2024-06-27 20:00:24,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 596 transitions, 8629 flow [2024-06-27 20:00:26,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 8489 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:26,811 INFO L231 Difference]: Finished difference. Result has 553 places, 581 transitions, 7434 flow [2024-06-27 20:00:26,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7267, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7434, PETRI_PLACES=553, PETRI_TRANSITIONS=581} [2024-06-27 20:00:26,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 522 predicate places. [2024-06-27 20:00:26,812 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 581 transitions, 7434 flow [2024-06-27 20:00:26,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:26,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:26,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:26,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 20:00:26,812 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)] === [2024-06-27 20:00:26,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:26,813 INFO L85 PathProgramCache]: Analyzing trace with hash -371836277, now seen corresponding path program 4 times [2024-06-27 20:00:26,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:26,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68441510] [2024-06-27 20:00:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:26,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68441510] [2024-06-27 20:00:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68441510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:28,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910946628] [2024-06-27 20:00:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:28,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:28,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 581 transitions, 7434 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:28,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:28,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:28,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:29,366 INFO L124 PetriNetUnfolderBase]: 1136/2140 cut-off events. [2024-06-27 20:00:29,366 INFO L125 PetriNetUnfolderBase]: For 569983/569983 co-relation queries the response was YES. [2024-06-27 20:00:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19217 conditions, 2140 events. 1136/2140 cut-off events. For 569983/569983 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13944 event pairs, 70 based on Foata normal form. 1/2137 useless extension candidates. Maximal degree in co-relation 18985. Up to 1855 conditions per place. [2024-06-27 20:00:29,399 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 536 selfloop transitions, 60 changer transitions 0/599 dead transitions. [2024-06-27 20:00:29,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 599 transitions, 9079 flow [2024-06-27 20:00:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 20:00:29,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 20:00:29,400 INFO L175 Difference]: Start difference. First operand has 553 places, 581 transitions, 7434 flow. Second operand 11 states and 142 transitions. [2024-06-27 20:00:29,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 599 transitions, 9079 flow [2024-06-27 20:00:32,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 599 transitions, 8874 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:32,356 INFO L231 Difference]: Finished difference. Result has 554 places, 583 transitions, 7415 flow [2024-06-27 20:00:32,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7231, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7415, PETRI_PLACES=554, PETRI_TRANSITIONS=583} [2024-06-27 20:00:32,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 523 predicate places. [2024-06-27 20:00:32,357 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 583 transitions, 7415 flow [2024-06-27 20:00:32,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:32,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:32,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:32,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 20:00:32,358 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)] === [2024-06-27 20:00:32,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1725295182, now seen corresponding path program 2 times [2024-06-27 20:00:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771681400] [2024-06-27 20:00:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771681400] [2024-06-27 20:00:33,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771681400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:33,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285825962] [2024-06-27 20:00:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:33,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:33,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 583 transitions, 7415 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:33,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:33,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:34,349 INFO L124 PetriNetUnfolderBase]: 1152/2176 cut-off events. [2024-06-27 20:00:34,350 INFO L125 PetriNetUnfolderBase]: For 705907/705907 co-relation queries the response was YES. [2024-06-27 20:00:34,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19415 conditions, 2176 events. 1152/2176 cut-off events. For 705907/705907 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14245 event pairs, 74 based on Foata normal form. 10/2182 useless extension candidates. Maximal degree in co-relation 19182. Up to 1872 conditions per place. [2024-06-27 20:00:34,385 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 544 selfloop transitions, 53 changer transitions 4/604 dead transitions. [2024-06-27 20:00:34,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 604 transitions, 8762 flow [2024-06-27 20:00:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:00:34,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 20:00:34,387 INFO L175 Difference]: Start difference. First operand has 554 places, 583 transitions, 7415 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:00:34,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 604 transitions, 8762 flow [2024-06-27 20:00:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 604 transitions, 8601 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:37,369 INFO L231 Difference]: Finished difference. Result has 558 places, 584 transitions, 7402 flow [2024-06-27 20:00:37,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7402, PETRI_PLACES=558, PETRI_TRANSITIONS=584} [2024-06-27 20:00:37,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 527 predicate places. [2024-06-27 20:00:37,370 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 584 transitions, 7402 flow [2024-06-27 20:00:37,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:37,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:37,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:37,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 20:00:37,371 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)] === [2024-06-27 20:00:37,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:37,371 INFO L85 PathProgramCache]: Analyzing trace with hash -198386775, now seen corresponding path program 5 times [2024-06-27 20:00:37,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:37,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693964903] [2024-06-27 20:00:37,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:37,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693964903] [2024-06-27 20:00:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693964903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:38,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:38,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763664042] [2024-06-27 20:00:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:38,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:38,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:38,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:38,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:38,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 584 transitions, 7402 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:38,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:38,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:39,806 INFO L124 PetriNetUnfolderBase]: 1144/2163 cut-off events. [2024-06-27 20:00:39,806 INFO L125 PetriNetUnfolderBase]: For 562262/562262 co-relation queries the response was YES. [2024-06-27 20:00:39,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19121 conditions, 2163 events. 1144/2163 cut-off events. For 562262/562262 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14164 event pairs, 74 based on Foata normal form. 1/2160 useless extension candidates. Maximal degree in co-relation 18887. Up to 1891 conditions per place. [2024-06-27 20:00:39,842 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 539 selfloop transitions, 57 changer transitions 0/599 dead transitions. [2024-06-27 20:00:39,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 599 transitions, 8630 flow [2024-06-27 20:00:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:00:39,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:00:39,844 INFO L175 Difference]: Start difference. First operand has 558 places, 584 transitions, 7402 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:00:39,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 599 transitions, 8630 flow [2024-06-27 20:00:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 599 transitions, 8468 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:42,958 INFO L231 Difference]: Finished difference. Result has 561 places, 584 transitions, 7359 flow [2024-06-27 20:00:42,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7359, PETRI_PLACES=561, PETRI_TRANSITIONS=584} [2024-06-27 20:00:42,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-27 20:00:42,959 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 584 transitions, 7359 flow [2024-06-27 20:00:42,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:42,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:42,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:42,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 20:00:42,960 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)] === [2024-06-27 20:00:42,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2710194, now seen corresponding path program 3 times [2024-06-27 20:00:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930659543] [2024-06-27 20:00:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:43,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930659543] [2024-06-27 20:00:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930659543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:43,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:43,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690479576] [2024-06-27 20:00:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:43,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:43,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 584 transitions, 7359 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:43,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:43,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:43,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:44,755 INFO L124 PetriNetUnfolderBase]: 1148/2171 cut-off events. [2024-06-27 20:00:44,755 INFO L125 PetriNetUnfolderBase]: For 583175/583175 co-relation queries the response was YES. [2024-06-27 20:00:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19162 conditions, 2171 events. 1148/2171 cut-off events. For 583175/583175 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14233 event pairs, 76 based on Foata normal form. 2/2169 useless extension candidates. Maximal degree in co-relation 18927. Up to 1838 conditions per place. [2024-06-27 20:00:44,791 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 525 selfloop transitions, 72 changer transitions 0/600 dead transitions. [2024-06-27 20:00:44,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 600 transitions, 8617 flow [2024-06-27 20:00:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 20:00:44,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 20:00:44,793 INFO L175 Difference]: Start difference. First operand has 561 places, 584 transitions, 7359 flow. Second operand 11 states and 140 transitions. [2024-06-27 20:00:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 600 transitions, 8617 flow [2024-06-27 20:00:47,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 600 transitions, 8484 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:47,740 INFO L231 Difference]: Finished difference. Result has 561 places, 585 transitions, 7404 flow [2024-06-27 20:00:47,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7226, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7404, PETRI_PLACES=561, PETRI_TRANSITIONS=585} [2024-06-27 20:00:47,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-27 20:00:47,741 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 585 transitions, 7404 flow [2024-06-27 20:00:47,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:47,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:47,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:47,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 20:00:47,742 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)] === [2024-06-27 20:00:47,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:47,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2709915, now seen corresponding path program 6 times [2024-06-27 20:00:47,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:47,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170471650] [2024-06-27 20:00:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:47,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170471650] [2024-06-27 20:00:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170471650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:48,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159817831] [2024-06-27 20:00:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:48,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:48,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:48,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 585 transitions, 7404 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:48,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:48,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:48,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:49,744 INFO L124 PetriNetUnfolderBase]: 1146/2168 cut-off events. [2024-06-27 20:00:49,745 INFO L125 PetriNetUnfolderBase]: For 559776/559776 co-relation queries the response was YES. [2024-06-27 20:00:49,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19027 conditions, 2168 events. 1146/2168 cut-off events. For 559776/559776 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14200 event pairs, 74 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 18791. Up to 1778 conditions per place. [2024-06-27 20:00:49,778 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 501 selfloop transitions, 96 changer transitions 0/600 dead transitions. [2024-06-27 20:00:49,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 600 transitions, 8982 flow [2024-06-27 20:00:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 20:00:49,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:00:49,779 INFO L175 Difference]: Start difference. First operand has 561 places, 585 transitions, 7404 flow. Second operand 11 states and 143 transitions. [2024-06-27 20:00:49,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 600 transitions, 8982 flow [2024-06-27 20:00:52,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 600 transitions, 8776 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:52,797 INFO L231 Difference]: Finished difference. Result has 563 places, 585 transitions, 7398 flow [2024-06-27 20:00:52,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7198, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7398, PETRI_PLACES=563, PETRI_TRANSITIONS=585} [2024-06-27 20:00:52,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-27 20:00:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 585 transitions, 7398 flow [2024-06-27 20:00:52,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:52,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:52,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:52,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 20:00:52,798 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)] === [2024-06-27 20:00:52,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -4439646, now seen corresponding path program 4 times [2024-06-27 20:00:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419990664] [2024-06-27 20:00:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419990664] [2024-06-27 20:00:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419990664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:54,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:54,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849807057] [2024-06-27 20:00:54,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:54,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:54,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:54,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 585 transitions, 7398 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:54,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:54,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:54,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:55,335 INFO L124 PetriNetUnfolderBase]: 1150/2178 cut-off events. [2024-06-27 20:00:55,336 INFO L125 PetriNetUnfolderBase]: For 581079/581079 co-relation queries the response was YES. [2024-06-27 20:00:55,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19105 conditions, 2178 events. 1150/2178 cut-off events. For 581079/581079 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14312 event pairs, 71 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 18868. Up to 1808 conditions per place. [2024-06-27 20:00:55,372 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 515 selfloop transitions, 84 changer transitions 0/602 dead transitions. [2024-06-27 20:00:55,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 602 transitions, 8664 flow [2024-06-27 20:00:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:00:55,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:00:55,374 INFO L175 Difference]: Start difference. First operand has 563 places, 585 transitions, 7398 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:00:55,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 602 transitions, 8664 flow [2024-06-27 20:00:58,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 602 transitions, 8326 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:58,387 INFO L231 Difference]: Finished difference. Result has 563 places, 586 transitions, 7264 flow [2024-06-27 20:00:58,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7060, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7264, PETRI_PLACES=563, PETRI_TRANSITIONS=586} [2024-06-27 20:00:58,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-27 20:00:58,387 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 586 transitions, 7264 flow [2024-06-27 20:00:58,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:58,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:58,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 20:00:58,388 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)] === [2024-06-27 20:00:58,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -170268728, now seen corresponding path program 5 times [2024-06-27 20:00:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:58,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882378356] [2024-06-27 20:00:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:59,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882378356] [2024-06-27 20:00:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882378356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:59,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:59,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:59,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755272779] [2024-06-27 20:00:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:59,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:59,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:00:59,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 586 transitions, 7264 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:59,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:59,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:00:59,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:00,504 INFO L124 PetriNetUnfolderBase]: 1176/2230 cut-off events. [2024-06-27 20:01:00,505 INFO L125 PetriNetUnfolderBase]: For 699934/699934 co-relation queries the response was YES. [2024-06-27 20:01:00,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20719 conditions, 2230 events. 1176/2230 cut-off events. For 699934/699934 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 14635 event pairs, 92 based on Foata normal form. 2/2228 useless extension candidates. Maximal degree in co-relation 20481. Up to 1771 conditions per place. [2024-06-27 20:01:00,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 529 selfloop transitions, 75 changer transitions 1/608 dead transitions. [2024-06-27 20:01:00,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 608 transitions, 8994 flow [2024-06-27 20:01:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 20:01:00,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 20:01:00,550 INFO L175 Difference]: Start difference. First operand has 563 places, 586 transitions, 7264 flow. Second operand 11 states and 145 transitions. [2024-06-27 20:01:00,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 608 transitions, 8994 flow [2024-06-27 20:01:03,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 608 transitions, 8683 flow, removed 26 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:03,728 INFO L231 Difference]: Finished difference. Result has 561 places, 587 transitions, 7141 flow [2024-06-27 20:01:03,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6953, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7141, PETRI_PLACES=561, PETRI_TRANSITIONS=587} [2024-06-27 20:01:03,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-27 20:01:03,729 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 587 transitions, 7141 flow [2024-06-27 20:01:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:03,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:03,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:03,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 20:01:03,729 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)] === [2024-06-27 20:01:03,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 548101975, now seen corresponding path program 7 times [2024-06-27 20:01:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773629008] [2024-06-27 20:01:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773629008] [2024-06-27 20:01:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773629008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:05,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581140250] [2024-06-27 20:01:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:05,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:05,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 587 transitions, 7141 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:05,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:05,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:06,473 INFO L124 PetriNetUnfolderBase]: 1179/2235 cut-off events. [2024-06-27 20:01:06,473 INFO L125 PetriNetUnfolderBase]: For 692189/692189 co-relation queries the response was YES. [2024-06-27 20:01:06,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20522 conditions, 2235 events. 1179/2235 cut-off events. For 692189/692189 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14642 event pairs, 94 based on Foata normal form. 1/2232 useless extension candidates. Maximal degree in co-relation 20288. Up to 1898 conditions per place. [2024-06-27 20:01:06,509 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 524 selfloop transitions, 77 changer transitions 0/604 dead transitions. [2024-06-27 20:01:06,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 604 transitions, 8433 flow [2024-06-27 20:01:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:01:06,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:01:06,511 INFO L175 Difference]: Start difference. First operand has 561 places, 587 transitions, 7141 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:01:06,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 604 transitions, 8433 flow [2024-06-27 20:01:09,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 604 transitions, 8253 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:09,658 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 7178 flow [2024-06-27 20:01:09,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6961, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7178, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2024-06-27 20:01:09,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-27 20:01:09,659 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 7178 flow [2024-06-27 20:01:09,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:09,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:09,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 20:01:09,659 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)] === [2024-06-27 20:01:09,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash 375056093, now seen corresponding path program 8 times [2024-06-27 20:01:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305102554] [2024-06-27 20:01:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:10,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:10,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305102554] [2024-06-27 20:01:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305102554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:10,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88792247] [2024-06-27 20:01:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:10,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:11,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:11,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 7178 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:11,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:11,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:11,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:11,833 INFO L124 PetriNetUnfolderBase]: 1155/2186 cut-off events. [2024-06-27 20:01:11,834 INFO L125 PetriNetUnfolderBase]: For 561385/561385 co-relation queries the response was YES. [2024-06-27 20:01:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18665 conditions, 2186 events. 1155/2186 cut-off events. For 561385/561385 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 14347 event pairs, 78 based on Foata normal form. 1/2183 useless extension candidates. Maximal degree in co-relation 18430. Up to 1849 conditions per place. [2024-06-27 20:01:11,869 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 525 selfloop transitions, 76 changer transitions 0/604 dead transitions. [2024-06-27 20:01:11,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 604 transitions, 8416 flow [2024-06-27 20:01:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:01:11,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:01:11,870 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 7178 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:01:11,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 604 transitions, 8416 flow [2024-06-27 20:01:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 604 transitions, 8192 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:14,601 INFO L231 Difference]: Finished difference. Result has 567 places, 589 transitions, 7111 flow [2024-06-27 20:01:14,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6954, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7111, PETRI_PLACES=567, PETRI_TRANSITIONS=589} [2024-06-27 20:01:14,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 536 predicate places. [2024-06-27 20:01:14,602 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 589 transitions, 7111 flow [2024-06-27 20:01:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:14,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:14,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 20:01:14,603 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)] === [2024-06-27 20:01:14,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash 515011421, now seen corresponding path program 11 times [2024-06-27 20:01:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:14,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412354475] [2024-06-27 20:01:14,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:14,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412354475] [2024-06-27 20:01:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412354475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:15,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071950821] [2024-06-27 20:01:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:15,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:15,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:15,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:15,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 589 transitions, 7111 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:15,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:15,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:15,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:16,366 INFO L124 PetriNetUnfolderBase]: 1159/2196 cut-off events. [2024-06-27 20:01:16,367 INFO L125 PetriNetUnfolderBase]: For 584078/584078 co-relation queries the response was YES. [2024-06-27 20:01:16,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18750 conditions, 2196 events. 1159/2196 cut-off events. For 584078/584078 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14497 event pairs, 68 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 18514. Up to 1824 conditions per place. [2024-06-27 20:01:16,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 512 selfloop transitions, 88 changer transitions 0/603 dead transitions. [2024-06-27 20:01:16,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 603 transitions, 8395 flow [2024-06-27 20:01:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:01:16,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 20:01:16,404 INFO L175 Difference]: Start difference. First operand has 567 places, 589 transitions, 7111 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:01:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 603 transitions, 8395 flow [2024-06-27 20:01:19,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 603 transitions, 8172 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:19,285 INFO L231 Difference]: Finished difference. Result has 565 places, 590 transitions, 7124 flow [2024-06-27 20:01:19,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6888, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7124, PETRI_PLACES=565, PETRI_TRANSITIONS=590} [2024-06-27 20:01:19,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-27 20:01:19,285 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 590 transitions, 7124 flow [2024-06-27 20:01:19,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:19,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:19,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:19,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 20:01:19,286 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)] === [2024-06-27 20:01:19,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1687524155, now seen corresponding path program 12 times [2024-06-27 20:01:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144942253] [2024-06-27 20:01:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:19,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144942253] [2024-06-27 20:01:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144942253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033683831] [2024-06-27 20:01:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:20,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:20,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:20,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:20,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 590 transitions, 7124 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:20,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:20,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:20,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:21,186 INFO L124 PetriNetUnfolderBase]: 1163/2204 cut-off events. [2024-06-27 20:01:21,186 INFO L125 PetriNetUnfolderBase]: For 592303/592303 co-relation queries the response was YES. [2024-06-27 20:01:21,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 2204 events. 1163/2204 cut-off events. For 592303/592303 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 14548 event pairs, 66 based on Foata normal form. 2/2204 useless extension candidates. Maximal degree in co-relation 18660. Up to 1890 conditions per place. [2024-06-27 20:01:21,223 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 531 selfloop transitions, 70 changer transitions 0/604 dead transitions. [2024-06-27 20:01:21,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 604 transitions, 8412 flow [2024-06-27 20:01:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:21,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 20:01:21,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 20:01:21,224 INFO L175 Difference]: Start difference. First operand has 565 places, 590 transitions, 7124 flow. Second operand 11 states and 137 transitions. [2024-06-27 20:01:21,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 604 transitions, 8412 flow [2024-06-27 20:01:24,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 604 transitions, 8186 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:24,269 INFO L231 Difference]: Finished difference. Result has 567 places, 591 transitions, 7101 flow [2024-06-27 20:01:24,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6898, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7101, PETRI_PLACES=567, PETRI_TRANSITIONS=591} [2024-06-27 20:01:24,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 536 predicate places. [2024-06-27 20:01:24,270 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 591 transitions, 7101 flow [2024-06-27 20:01:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:24,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:24,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 20:01:24,271 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)] === [2024-06-27 20:01:24,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1493584745, now seen corresponding path program 13 times [2024-06-27 20:01:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:24,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408566328] [2024-06-27 20:01:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:25,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408566328] [2024-06-27 20:01:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408566328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:25,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:25,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:25,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150904917] [2024-06-27 20:01:25,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:25,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:25,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:25,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:25,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:25,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 591 transitions, 7101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:25,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:25,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:25,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:26,140 INFO L124 PetriNetUnfolderBase]: 1167/2212 cut-off events. [2024-06-27 20:01:26,140 INFO L125 PetriNetUnfolderBase]: For 598795/598795 co-relation queries the response was YES. [2024-06-27 20:01:26,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 2212 events. 1167/2212 cut-off events. For 598795/598795 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 14597 event pairs, 68 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 18694. Up to 1916 conditions per place. [2024-06-27 20:01:26,177 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 539 selfloop transitions, 63 changer transitions 0/605 dead transitions. [2024-06-27 20:01:26,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 605 transitions, 8393 flow [2024-06-27 20:01:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 20:01:26,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 20:01:26,179 INFO L175 Difference]: Start difference. First operand has 567 places, 591 transitions, 7101 flow. Second operand 11 states and 135 transitions. [2024-06-27 20:01:26,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 605 transitions, 8393 flow [2024-06-27 20:01:29,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 605 transitions, 8202 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:29,188 INFO L231 Difference]: Finished difference. Result has 569 places, 592 transitions, 7101 flow [2024-06-27 20:01:29,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7101, PETRI_PLACES=569, PETRI_TRANSITIONS=592} [2024-06-27 20:01:29,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-27 20:01:29,189 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 592 transitions, 7101 flow [2024-06-27 20:01:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:29,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:29,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 20:01:29,190 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)] === [2024-06-27 20:01:29,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -904078627, now seen corresponding path program 14 times [2024-06-27 20:01:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766431007] [2024-06-27 20:01:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:30,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766431007] [2024-06-27 20:01:30,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766431007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:30,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:30,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258523414] [2024-06-27 20:01:30,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:30,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:30,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:30,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 592 transitions, 7101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:30,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:30,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:30,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:31,208 INFO L124 PetriNetUnfolderBase]: 1171/2220 cut-off events. [2024-06-27 20:01:31,208 INFO L125 PetriNetUnfolderBase]: For 605516/605516 co-relation queries the response was YES. [2024-06-27 20:01:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18989 conditions, 2220 events. 1171/2220 cut-off events. For 605516/605516 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 14684 event pairs, 68 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 18750. Up to 1936 conditions per place. [2024-06-27 20:01:31,239 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 546 selfloop transitions, 59 changer transitions 0/608 dead transitions. [2024-06-27 20:01:31,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 608 transitions, 8433 flow [2024-06-27 20:01:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 20:01:31,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 20:01:31,240 INFO L175 Difference]: Start difference. First operand has 569 places, 592 transitions, 7101 flow. Second operand 11 states and 133 transitions. [2024-06-27 20:01:31,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 608 transitions, 8433 flow [2024-06-27 20:01:34,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 608 transitions, 8250 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:34,226 INFO L231 Difference]: Finished difference. Result has 572 places, 595 transitions, 7145 flow [2024-06-27 20:01:34,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7145, PETRI_PLACES=572, PETRI_TRANSITIONS=595} [2024-06-27 20:01:34,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 541 predicate places. [2024-06-27 20:01:34,227 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 595 transitions, 7145 flow [2024-06-27 20:01:34,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:34,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:34,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:34,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 20:01:34,229 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)] === [2024-06-27 20:01:34,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash -904226497, now seen corresponding path program 15 times [2024-06-27 20:01:34,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328077215] [2024-06-27 20:01:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:34,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:35,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:35,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328077215] [2024-06-27 20:01:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328077215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:35,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:35,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375745647] [2024-06-27 20:01:35,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:35,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:35,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:35,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:35,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:35,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 595 transitions, 7145 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:35,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:35,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:36,325 INFO L124 PetriNetUnfolderBase]: 1175/2228 cut-off events. [2024-06-27 20:01:36,326 INFO L125 PetriNetUnfolderBase]: For 612179/612179 co-relation queries the response was YES. [2024-06-27 20:01:36,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19063 conditions, 2228 events. 1175/2228 cut-off events. For 612179/612179 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 14744 event pairs, 68 based on Foata normal form. 2/2228 useless extension candidates. Maximal degree in co-relation 18822. Up to 1942 conditions per place. [2024-06-27 20:01:36,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 551 selfloop transitions, 56 changer transitions 0/610 dead transitions. [2024-06-27 20:01:36,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 610 transitions, 8453 flow [2024-06-27 20:01:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 20:01:36,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-27 20:01:36,365 INFO L175 Difference]: Start difference. First operand has 572 places, 595 transitions, 7145 flow. Second operand 11 states and 133 transitions. [2024-06-27 20:01:36,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 610 transitions, 8453 flow [2024-06-27 20:01:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 610 transitions, 8286 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:01:39,568 INFO L231 Difference]: Finished difference. Result has 575 places, 596 transitions, 7158 flow [2024-06-27 20:01:39,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6978, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7158, PETRI_PLACES=575, PETRI_TRANSITIONS=596} [2024-06-27 20:01:39,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-27 20:01:39,569 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 596 transitions, 7158 flow [2024-06-27 20:01:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:39,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:39,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 20:01:39,570 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)] === [2024-06-27 20:01:39,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash 234507864, now seen corresponding path program 6 times [2024-06-27 20:01:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:39,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398207282] [2024-06-27 20:01:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398207282] [2024-06-27 20:01:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398207282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:40,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124022935] [2024-06-27 20:01:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:40,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:40,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:40,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 596 transitions, 7158 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:40,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:40,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:40,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:41,479 INFO L124 PetriNetUnfolderBase]: 1186/2249 cut-off events. [2024-06-27 20:01:41,479 INFO L125 PetriNetUnfolderBase]: For 651753/651753 co-relation queries the response was YES. [2024-06-27 20:01:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19564 conditions, 2249 events. 1186/2249 cut-off events. For 651753/651753 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 14909 event pairs, 69 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 19322. Up to 1719 conditions per place. [2024-06-27 20:01:41,516 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 479 selfloop transitions, 132 changer transitions 0/614 dead transitions. [2024-06-27 20:01:41,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 614 transitions, 8859 flow [2024-06-27 20:01:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 20:01:41,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 20:01:41,517 INFO L175 Difference]: Start difference. First operand has 575 places, 596 transitions, 7158 flow. Second operand 11 states and 144 transitions. [2024-06-27 20:01:41,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 614 transitions, 8859 flow [2024-06-27 20:01:44,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 8689 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:44,859 INFO L231 Difference]: Finished difference. Result has 577 places, 598 transitions, 7327 flow [2024-06-27 20:01:44,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6988, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7327, PETRI_PLACES=577, PETRI_TRANSITIONS=598} [2024-06-27 20:01:44,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-27 20:01:44,860 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 598 transitions, 7327 flow [2024-06-27 20:01:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:44,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:44,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 20:01:44,861 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)] === [2024-06-27 20:01:44,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1687731917, now seen corresponding path program 9 times [2024-06-27 20:01:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:44,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423920984] [2024-06-27 20:01:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423920984] [2024-06-27 20:01:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423920984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:46,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114488850] [2024-06-27 20:01:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:46,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:47,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:47,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 598 transitions, 7327 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:47,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:47,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:47,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:48,077 INFO L124 PetriNetUnfolderBase]: 1184/2246 cut-off events. [2024-06-27 20:01:48,078 INFO L125 PetriNetUnfolderBase]: For 623552/623552 co-relation queries the response was YES. [2024-06-27 20:01:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 2246 events. 1184/2246 cut-off events. For 623552/623552 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 14895 event pairs, 76 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 19213. Up to 1966 conditions per place. [2024-06-27 20:01:48,114 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 554 selfloop transitions, 60 changer transitions 0/617 dead transitions. [2024-06-27 20:01:48,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 617 transitions, 8659 flow [2024-06-27 20:01:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:01:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:01:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-27 20:01:48,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-27 20:01:48,116 INFO L175 Difference]: Start difference. First operand has 577 places, 598 transitions, 7327 flow. Second operand 13 states and 163 transitions. [2024-06-27 20:01:48,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 617 transitions, 8659 flow [2024-06-27 20:01:51,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 617 transitions, 8436 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:01:51,552 INFO L231 Difference]: Finished difference. Result has 583 places, 598 transitions, 7234 flow [2024-06-27 20:01:51,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7234, PETRI_PLACES=583, PETRI_TRANSITIONS=598} [2024-06-27 20:01:51,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 552 predicate places. [2024-06-27 20:01:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 598 transitions, 7234 flow [2024-06-27 20:01:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:51,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:51,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 20:01:51,554 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)] === [2024-06-27 20:01:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 787576144, now seen corresponding path program 7 times [2024-06-27 20:01:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790673213] [2024-06-27 20:01:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790673213] [2024-06-27 20:01:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790673213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838992329] [2024-06-27 20:01:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:53,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:53,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 598 transitions, 7234 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:53,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:53,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:53,923 INFO L124 PetriNetUnfolderBase]: 1224/2326 cut-off events. [2024-06-27 20:01:53,924 INFO L125 PetriNetUnfolderBase]: For 849283/849283 co-relation queries the response was YES. [2024-06-27 20:01:53,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 2326 events. 1224/2326 cut-off events. For 849283/849283 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15455 event pairs, 88 based on Foata normal form. 2/2326 useless extension candidates. Maximal degree in co-relation 22002. Up to 1508 conditions per place. [2024-06-27 20:01:53,965 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 442 selfloop transitions, 176 changer transitions 0/621 dead transitions. [2024-06-27 20:01:53,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 621 transitions, 9048 flow [2024-06-27 20:01:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 20:01:53,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:01:53,966 INFO L175 Difference]: Start difference. First operand has 583 places, 598 transitions, 7234 flow. Second operand 12 states and 160 transitions. [2024-06-27 20:01:53,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 621 transitions, 9048 flow [2024-06-27 20:01:58,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 621 transitions, 8889 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:58,035 INFO L231 Difference]: Finished difference. Result has 584 places, 600 transitions, 7505 flow [2024-06-27 20:01:58,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7075, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7505, PETRI_PLACES=584, PETRI_TRANSITIONS=600} [2024-06-27 20:01:58,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 553 predicate places. [2024-06-27 20:01:58,036 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 600 transitions, 7505 flow [2024-06-27 20:01:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:58,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:58,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 20:01:58,037 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)] === [2024-06-27 20:01:58,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 234498564, now seen corresponding path program 8 times [2024-06-27 20:01:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:58,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777482519] [2024-06-27 20:01:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:59,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:59,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777482519] [2024-06-27 20:01:59,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777482519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:59,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:59,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:01:59,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143132704] [2024-06-27 20:01:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:59,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:01:59,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:01:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:01:59,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:01:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 600 transitions, 7505 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:01:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:00,238 INFO L124 PetriNetUnfolderBase]: 1231/2343 cut-off events. [2024-06-27 20:02:00,238 INFO L125 PetriNetUnfolderBase]: For 862312/862312 co-relation queries the response was YES. [2024-06-27 20:02:00,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22678 conditions, 2343 events. 1231/2343 cut-off events. For 862312/862312 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15625 event pairs, 94 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 22432. Up to 1777 conditions per place. [2024-06-27 20:02:00,280 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 444 selfloop transitions, 170 changer transitions 0/617 dead transitions. [2024-06-27 20:02:00,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 617 transitions, 8828 flow [2024-06-27 20:02:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 20:02:00,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 20:02:00,282 INFO L175 Difference]: Start difference. First operand has 584 places, 600 transitions, 7505 flow. Second operand 12 states and 153 transitions. [2024-06-27 20:02:00,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 617 transitions, 8828 flow [2024-06-27 20:02:04,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 617 transitions, 8620 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 20:02:04,370 INFO L231 Difference]: Finished difference. Result has 590 places, 603 transitions, 7706 flow [2024-06-27 20:02:04,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7301, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7706, PETRI_PLACES=590, PETRI_TRANSITIONS=603} [2024-06-27 20:02:04,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-27 20:02:04,370 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 603 transitions, 7706 flow [2024-06-27 20:02:04,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:04,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:04,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:04,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 20:02:04,371 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)] === [2024-06-27 20:02:04,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash 225561264, now seen corresponding path program 9 times [2024-06-27 20:02:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:04,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641947888] [2024-06-27 20:02:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641947888] [2024-06-27 20:02:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641947888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:05,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:02:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456982065] [2024-06-27 20:02:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:02:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:02:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:02:05,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 603 transitions, 7706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:05,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:06,360 INFO L124 PetriNetUnfolderBase]: 1228/2338 cut-off events. [2024-06-27 20:02:06,361 INFO L125 PetriNetUnfolderBase]: For 833020/833020 co-relation queries the response was YES. [2024-06-27 20:02:06,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22498 conditions, 2338 events. 1228/2338 cut-off events. For 833020/833020 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 15564 event pairs, 96 based on Foata normal form. 2/2338 useless extension candidates. Maximal degree in co-relation 22250. Up to 1824 conditions per place. [2024-06-27 20:02:06,397 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 479 selfloop transitions, 135 changer transitions 0/617 dead transitions. [2024-06-27 20:02:06,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 617 transitions, 8979 flow [2024-06-27 20:02:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:02:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:02:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 20:02:06,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 20:02:06,398 INFO L175 Difference]: Start difference. First operand has 590 places, 603 transitions, 7706 flow. Second operand 11 states and 142 transitions. [2024-06-27 20:02:06,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 617 transitions, 8979 flow [2024-06-27 20:02:10,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 617 transitions, 8588 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 20:02:10,362 INFO L231 Difference]: Finished difference. Result has 592 places, 603 transitions, 7593 flow [2024-06-27 20:02:10,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=592, PETRI_TRANSITIONS=603} [2024-06-27 20:02:10,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-27 20:02:10,362 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 603 transitions, 7593 flow [2024-06-27 20:02:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:10,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:10,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:10,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 20:02:10,363 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)] === [2024-06-27 20:02:10,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash 225294075, now seen corresponding path program 10 times [2024-06-27 20:02:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:10,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584284128] [2024-06-27 20:02:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584284128] [2024-06-27 20:02:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584284128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:11,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075077262] [2024-06-27 20:02:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:12,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 603 transitions, 7593 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:12,977 INFO L124 PetriNetUnfolderBase]: 1226/2331 cut-off events. [2024-06-27 20:02:12,978 INFO L125 PetriNetUnfolderBase]: For 809797/809797 co-relation queries the response was YES. [2024-06-27 20:02:13,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22149 conditions, 2331 events. 1226/2331 cut-off events. For 809797/809797 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15529 event pairs, 88 based on Foata normal form. 1/2330 useless extension candidates. Maximal degree in co-relation 21900. Up to 1828 conditions per place. [2024-06-27 20:02:13,020 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 459 selfloop transitions, 155 changer transitions 0/617 dead transitions. [2024-06-27 20:02:13,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 617 transitions, 8864 flow [2024-06-27 20:02:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:02:13,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:02:13,022 INFO L175 Difference]: Start difference. First operand has 592 places, 603 transitions, 7593 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:02:13,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 617 transitions, 8864 flow [2024-06-27 20:02:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 617 transitions, 8552 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 20:02:17,121 INFO L231 Difference]: Finished difference. Result has 594 places, 604 transitions, 7609 flow [2024-06-27 20:02:17,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7281, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7609, PETRI_PLACES=594, PETRI_TRANSITIONS=604} [2024-06-27 20:02:17,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 563 predicate places. [2024-06-27 20:02:17,122 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 604 transitions, 7609 flow [2024-06-27 20:02:17,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:17,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:17,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 20:02:17,122 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)] === [2024-06-27 20:02:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -31408245, now seen corresponding path program 11 times [2024-06-27 20:02:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921824521] [2024-06-27 20:02:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:19,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:19,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921824521] [2024-06-27 20:02:19,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921824521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:19,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:19,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:19,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516464242] [2024-06-27 20:02:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:19,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:19,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:19,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 604 transitions, 7609 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:19,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:19,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:19,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:20,565 INFO L124 PetriNetUnfolderBase]: 1229/2336 cut-off events. [2024-06-27 20:02:20,565 INFO L125 PetriNetUnfolderBase]: For 809907/809907 co-relation queries the response was YES. [2024-06-27 20:02:20,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22202 conditions, 2336 events. 1229/2336 cut-off events. For 809907/809907 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 15584 event pairs, 88 based on Foata normal form. 1/2335 useless extension candidates. Maximal degree in co-relation 21952. Up to 1833 conditions per place. [2024-06-27 20:02:20,607 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 478 selfloop transitions, 138 changer transitions 0/619 dead transitions. [2024-06-27 20:02:20,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 619 transitions, 8925 flow [2024-06-27 20:02:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:02:20,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:02:20,609 INFO L175 Difference]: Start difference. First operand has 594 places, 604 transitions, 7609 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:02:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 619 transitions, 8925 flow [2024-06-27 20:02:24,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 619 transitions, 8686 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:02:24,797 INFO L231 Difference]: Finished difference. Result has 598 places, 606 transitions, 7709 flow [2024-06-27 20:02:24,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7370, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7709, PETRI_PLACES=598, PETRI_TRANSITIONS=606} [2024-06-27 20:02:24,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 567 predicate places. [2024-06-27 20:02:24,798 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 606 transitions, 7709 flow [2024-06-27 20:02:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:24,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:24,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 20:02:24,798 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)] === [2024-06-27 20:02:24,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -31206435, now seen corresponding path program 12 times [2024-06-27 20:02:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796637809] [2024-06-27 20:02:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:24,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796637809] [2024-06-27 20:02:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796637809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:25,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:25,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:02:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989262727] [2024-06-27 20:02:25,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:25,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:02:25,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:02:25,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:02:26,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:26,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 606 transitions, 7709 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:26,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:26,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:26,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:26,972 INFO L124 PetriNetUnfolderBase]: 1227/2337 cut-off events. [2024-06-27 20:02:26,972 INFO L125 PetriNetUnfolderBase]: For 799425/799425 co-relation queries the response was YES. [2024-06-27 20:02:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 2337 events. 1227/2337 cut-off events. For 799425/799425 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15604 event pairs, 92 based on Foata normal form. 1/2336 useless extension candidates. Maximal degree in co-relation 21789. Up to 1830 conditions per place. [2024-06-27 20:02:27,011 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 480 selfloop transitions, 136 changer transitions 0/619 dead transitions. [2024-06-27 20:02:27,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 619 transitions, 8971 flow [2024-06-27 20:02:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:02:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 20:02:27,012 INFO L175 Difference]: Start difference. First operand has 598 places, 606 transitions, 7709 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:02:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 619 transitions, 8971 flow [2024-06-27 20:02:31,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 619 transitions, 8672 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 20:02:31,313 INFO L231 Difference]: Finished difference. Result has 602 places, 606 transitions, 7687 flow [2024-06-27 20:02:31,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7410, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7687, PETRI_PLACES=602, PETRI_TRANSITIONS=606} [2024-06-27 20:02:31,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 571 predicate places. [2024-06-27 20:02:31,314 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 606 transitions, 7687 flow [2024-06-27 20:02:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:31,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:31,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 20:02:31,315 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)] === [2024-06-27 20:02:31,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -23780106, now seen corresponding path program 10 times [2024-06-27 20:02:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424276103] [2024-06-27 20:02:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:31,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424276103] [2024-06-27 20:02:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424276103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:32,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061211642] [2024-06-27 20:02:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:32,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:32,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 606 transitions, 7687 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:32,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:32,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:33,769 INFO L124 PetriNetUnfolderBase]: 1238/2358 cut-off events. [2024-06-27 20:02:33,769 INFO L125 PetriNetUnfolderBase]: For 862812/862812 co-relation queries the response was YES. [2024-06-27 20:02:33,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 2358 events. 1238/2358 cut-off events. For 862812/862812 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 15785 event pairs, 91 based on Foata normal form. 2/2358 useless extension candidates. Maximal degree in co-relation 22402. Up to 1905 conditions per place. [2024-06-27 20:02:33,810 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 515 selfloop transitions, 106 changer transitions 0/624 dead transitions. [2024-06-27 20:02:33,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 624 transitions, 9421 flow [2024-06-27 20:02:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 20:02:33,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 20:02:33,811 INFO L175 Difference]: Start difference. First operand has 602 places, 606 transitions, 7687 flow. Second operand 12 states and 153 transitions. [2024-06-27 20:02:33,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 624 transitions, 9421 flow [2024-06-27 20:02:38,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 624 transitions, 9074 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 20:02:38,447 INFO L231 Difference]: Finished difference. Result has 603 places, 608 transitions, 7634 flow [2024-06-27 20:02:38,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7634, PETRI_PLACES=603, PETRI_TRANSITIONS=608} [2024-06-27 20:02:38,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 572 predicate places. [2024-06-27 20:02:38,448 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 608 transitions, 7634 flow [2024-06-27 20:02:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:38,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:38,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:38,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 20:02:38,449 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)] === [2024-06-27 20:02:38,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash -24048876, now seen corresponding path program 11 times [2024-06-27 20:02:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417426827] [2024-06-27 20:02:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:39,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:39,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417426827] [2024-06-27 20:02:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417426827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:39,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497255713] [2024-06-27 20:02:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:39,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:39,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 608 transitions, 7634 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:39,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:39,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:39,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:40,613 INFO L124 PetriNetUnfolderBase]: 1242/2362 cut-off events. [2024-06-27 20:02:40,614 INFO L125 PetriNetUnfolderBase]: For 873253/873253 co-relation queries the response was YES. [2024-06-27 20:02:40,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22686 conditions, 2362 events. 1242/2362 cut-off events. For 873253/873253 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 15840 event pairs, 91 based on Foata normal form. 2/2362 useless extension candidates. Maximal degree in co-relation 22433. Up to 1858 conditions per place. [2024-06-27 20:02:40,659 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 499 selfloop transitions, 120 changer transitions 0/622 dead transitions. [2024-06-27 20:02:40,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 622 transitions, 8942 flow [2024-06-27 20:02:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:02:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:02:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 20:02:40,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 20:02:40,660 INFO L175 Difference]: Start difference. First operand has 603 places, 608 transitions, 7634 flow. Second operand 11 states and 144 transitions. [2024-06-27 20:02:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 622 transitions, 8942 flow [2024-06-27 20:02:45,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 622 transitions, 8763 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:02:45,852 INFO L231 Difference]: Finished difference. Result has 608 places, 609 transitions, 7741 flow [2024-06-27 20:02:45,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7463, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7741, PETRI_PLACES=608, PETRI_TRANSITIONS=609} [2024-06-27 20:02:45,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2024-06-27 20:02:45,852 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 609 transitions, 7741 flow [2024-06-27 20:02:45,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:45,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:45,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:45,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 20:02:45,853 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)] === [2024-06-27 20:02:45,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -31198995, now seen corresponding path program 13 times [2024-06-27 20:02:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866777282] [2024-06-27 20:02:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866777282] [2024-06-27 20:02:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866777282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:47,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:47,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943456424] [2024-06-27 20:02:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:47,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:47,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 609 transitions, 7741 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:47,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:47,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:47,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:48,571 INFO L124 PetriNetUnfolderBase]: 1368/2596 cut-off events. [2024-06-27 20:02:48,571 INFO L125 PetriNetUnfolderBase]: For 863973/863973 co-relation queries the response was YES. [2024-06-27 20:02:48,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24475 conditions, 2596 events. 1368/2596 cut-off events. For 863973/863973 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17749 event pairs, 98 based on Foata normal form. 1/2591 useless extension candidates. Maximal degree in co-relation 24220. Up to 2137 conditions per place. [2024-06-27 20:02:48,617 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 587 selfloop transitions, 121 changer transitions 0/711 dead transitions. [2024-06-27 20:02:48,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 711 transitions, 10396 flow [2024-06-27 20:02:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 20:02:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 20:02:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-27 20:02:48,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950892857142857 [2024-06-27 20:02:48,618 INFO L175 Difference]: Start difference. First operand has 608 places, 609 transitions, 7741 flow. Second operand 14 states and 177 transitions. [2024-06-27 20:02:48,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 711 transitions, 10396 flow [2024-06-27 20:02:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 711 transitions, 10084 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:02:53,617 INFO L231 Difference]: Finished difference. Result has 619 places, 668 transitions, 8686 flow [2024-06-27 20:02:53,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7477, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8686, PETRI_PLACES=619, PETRI_TRANSITIONS=668} [2024-06-27 20:02:53,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 588 predicate places. [2024-06-27 20:02:53,618 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 668 transitions, 8686 flow [2024-06-27 20:02:53,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:53,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:53,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:53,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 20:02:53,618 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)] === [2024-06-27 20:02:53,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:53,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1878609709, now seen corresponding path program 14 times [2024-06-27 20:02:53,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790931776] [2024-06-27 20:02:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:53,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790931776] [2024-06-27 20:02:55,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790931776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:55,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:55,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:02:55,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860528032] [2024-06-27 20:02:55,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:55,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:02:55,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:02:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:02:55,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:02:55,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 668 transitions, 8686 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:55,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:55,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:02:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:56,569 INFO L124 PetriNetUnfolderBase]: 1366/2597 cut-off events. [2024-06-27 20:02:56,569 INFO L125 PetriNetUnfolderBase]: For 850043/850043 co-relation queries the response was YES. [2024-06-27 20:02:56,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24488 conditions, 2597 events. 1366/2597 cut-off events. For 850043/850043 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 17748 event pairs, 97 based on Foata normal form. 1/2596 useless extension candidates. Maximal degree in co-relation 24226. Up to 1968 conditions per place. [2024-06-27 20:02:56,615 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 498 selfloop transitions, 180 changer transitions 0/681 dead transitions. [2024-06-27 20:02:56,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 681 transitions, 10072 flow [2024-06-27 20:02:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:02:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:02:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:02:56,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:02:56,616 INFO L175 Difference]: Start difference. First operand has 619 places, 668 transitions, 8686 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:02:56,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 681 transitions, 10072 flow [2024-06-27 20:03:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 681 transitions, 9852 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:01,219 INFO L231 Difference]: Finished difference. Result has 625 places, 668 transitions, 8832 flow [2024-06-27 20:03:01,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8832, PETRI_PLACES=625, PETRI_TRANSITIONS=668} [2024-06-27 20:03:01,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 594 predicate places. [2024-06-27 20:03:01,220 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 668 transitions, 8832 flow [2024-06-27 20:03:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:01,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:01,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:01,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 20:03:01,221 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)] === [2024-06-27 20:03:01,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -31198716, now seen corresponding path program 12 times [2024-06-27 20:03:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404098190] [2024-06-27 20:03:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404098190] [2024-06-27 20:03:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404098190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107918574] [2024-06-27 20:03:02,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:02,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:02,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 668 transitions, 8832 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:02,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:02,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:03,686 INFO L124 PetriNetUnfolderBase]: 1363/2592 cut-off events. [2024-06-27 20:03:03,686 INFO L125 PetriNetUnfolderBase]: For 840097/840097 co-relation queries the response was YES. [2024-06-27 20:03:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24207 conditions, 2592 events. 1363/2592 cut-off events. For 840097/840097 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17734 event pairs, 99 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 23944. Up to 2027 conditions per place. [2024-06-27 20:03:03,733 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 531 selfloop transitions, 148 changer transitions 0/682 dead transitions. [2024-06-27 20:03:03,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 682 transitions, 10222 flow [2024-06-27 20:03:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:03:03,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:03:03,734 INFO L175 Difference]: Start difference. First operand has 625 places, 668 transitions, 8832 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:03:03,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 682 transitions, 10222 flow [2024-06-27 20:03:07,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 682 transitions, 9808 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:07,777 INFO L231 Difference]: Finished difference. Result has 627 places, 668 transitions, 8719 flow [2024-06-27 20:03:07,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8418, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8719, PETRI_PLACES=627, PETRI_TRANSITIONS=668} [2024-06-27 20:03:07,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 596 predicate places. [2024-06-27 20:03:07,778 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 668 transitions, 8719 flow [2024-06-27 20:03:07,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:07,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:07,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:07,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 20:03:07,779 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)] === [2024-06-27 20:03:07,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739357, now seen corresponding path program 15 times [2024-06-27 20:03:07,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:07,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607514072] [2024-06-27 20:03:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:09,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607514072] [2024-06-27 20:03:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607514072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:09,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755421912] [2024-06-27 20:03:09,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:09,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:09,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 668 transitions, 8719 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:09,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:09,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:10,322 INFO L124 PetriNetUnfolderBase]: 1361/2585 cut-off events. [2024-06-27 20:03:10,322 INFO L125 PetriNetUnfolderBase]: For 810985/810985 co-relation queries the response was YES. [2024-06-27 20:03:10,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23907 conditions, 2585 events. 1361/2585 cut-off events. For 810985/810985 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17683 event pairs, 97 based on Foata normal form. 1/2584 useless extension candidates. Maximal degree in co-relation 23643. Up to 2129 conditions per place. [2024-06-27 20:03:10,364 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 553 selfloop transitions, 127 changer transitions 0/683 dead transitions. [2024-06-27 20:03:10,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 683 transitions, 10518 flow [2024-06-27 20:03:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 20:03:10,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 20:03:10,365 INFO L175 Difference]: Start difference. First operand has 627 places, 668 transitions, 8719 flow. Second operand 12 states and 154 transitions. [2024-06-27 20:03:10,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 683 transitions, 10518 flow [2024-06-27 20:03:14,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 683 transitions, 10189 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:03:14,478 INFO L231 Difference]: Finished difference. Result has 627 places, 669 transitions, 8669 flow [2024-06-27 20:03:14,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8669, PETRI_PLACES=627, PETRI_TRANSITIONS=669} [2024-06-27 20:03:14,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 596 predicate places. [2024-06-27 20:03:14,483 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 669 transitions, 8669 flow [2024-06-27 20:03:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:14,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:14,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 20:03:14,483 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)] === [2024-06-27 20:03:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739636, now seen corresponding path program 13 times [2024-06-27 20:03:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792342255] [2024-06-27 20:03:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792342255] [2024-06-27 20:03:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792342255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:15,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:15,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198851088] [2024-06-27 20:03:15,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:16,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:16,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 669 transitions, 8669 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:16,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:16,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:16,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:17,126 INFO L124 PetriNetUnfolderBase]: 1365/2597 cut-off events. [2024-06-27 20:03:17,126 INFO L125 PetriNetUnfolderBase]: For 837494/837494 co-relation queries the response was YES. [2024-06-27 20:03:17,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23951 conditions, 2597 events. 1365/2597 cut-off events. For 837494/837494 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 17780 event pairs, 99 based on Foata normal form. 2/2597 useless extension candidates. Maximal degree in co-relation 23686. Up to 2190 conditions per place. [2024-06-27 20:03:17,175 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 584 selfloop transitions, 97 changer transitions 0/684 dead transitions. [2024-06-27 20:03:17,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 684 transitions, 10103 flow [2024-06-27 20:03:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:03:17,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:03:17,177 INFO L175 Difference]: Start difference. First operand has 627 places, 669 transitions, 8669 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:03:17,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 684 transitions, 10103 flow [2024-06-27 20:03:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 684 transitions, 9792 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:21,558 INFO L231 Difference]: Finished difference. Result has 631 places, 670 transitions, 8599 flow [2024-06-27 20:03:21,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8358, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8599, PETRI_PLACES=631, PETRI_TRANSITIONS=670} [2024-06-27 20:03:21,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 600 predicate places. [2024-06-27 20:03:21,559 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 670 transitions, 8599 flow [2024-06-27 20:03:21,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:21,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:21,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:21,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 20:03:21,559 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)] === [2024-06-27 20:03:21,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1695148946, now seen corresponding path program 14 times [2024-06-27 20:03:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:21,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585764218] [2024-06-27 20:03:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585764218] [2024-06-27 20:03:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585764218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736465179] [2024-06-27 20:03:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:22,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:22,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 670 transitions, 8599 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:22,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:22,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:22,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:24,133 INFO L124 PetriNetUnfolderBase]: 1375/2615 cut-off events. [2024-06-27 20:03:24,134 INFO L125 PetriNetUnfolderBase]: For 845677/845677 co-relation queries the response was YES. [2024-06-27 20:03:24,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24067 conditions, 2615 events. 1375/2615 cut-off events. For 845677/845677 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 17933 event pairs, 96 based on Foata normal form. 2/2615 useless extension candidates. Maximal degree in co-relation 23801. Up to 2219 conditions per place. [2024-06-27 20:03:24,176 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 587 selfloop transitions, 98 changer transitions 0/688 dead transitions. [2024-06-27 20:03:24,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 688 transitions, 10081 flow [2024-06-27 20:03:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:03:24,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 20:03:24,178 INFO L175 Difference]: Start difference. First operand has 631 places, 670 transitions, 8599 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:03:24,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 688 transitions, 10081 flow [2024-06-27 20:03:28,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 688 transitions, 9856 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 20:03:28,609 INFO L231 Difference]: Finished difference. Result has 634 places, 674 transitions, 8657 flow [2024-06-27 20:03:28,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8657, PETRI_PLACES=634, PETRI_TRANSITIONS=674} [2024-06-27 20:03:28,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 603 predicate places. [2024-06-27 20:03:28,609 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 674 transitions, 8657 flow [2024-06-27 20:03:28,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:28,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:28,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:28,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 20:03:28,610 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)] === [2024-06-27 20:03:28,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:28,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889476, now seen corresponding path program 15 times [2024-06-27 20:03:28,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:28,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410815802] [2024-06-27 20:03:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410815802] [2024-06-27 20:03:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410815802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:29,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:29,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013731352] [2024-06-27 20:03:29,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:29,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:30,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:30,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 674 transitions, 8657 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:30,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:30,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:30,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:30,978 INFO L124 PetriNetUnfolderBase]: 1379/2623 cut-off events. [2024-06-27 20:03:30,979 INFO L125 PetriNetUnfolderBase]: For 854041/854041 co-relation queries the response was YES. [2024-06-27 20:03:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24166 conditions, 2623 events. 1379/2623 cut-off events. For 854041/854041 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18001 event pairs, 98 based on Foata normal form. 2/2623 useless extension candidates. Maximal degree in co-relation 23899. Up to 2257 conditions per place. [2024-06-27 20:03:31,027 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 603 selfloop transitions, 83 changer transitions 0/689 dead transitions. [2024-06-27 20:03:31,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 689 transitions, 10105 flow [2024-06-27 20:03:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:03:31,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:03:31,028 INFO L175 Difference]: Start difference. First operand has 634 places, 674 transitions, 8657 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:03:31,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 689 transitions, 10105 flow [2024-06-27 20:03:35,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 689 transitions, 9926 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:35,353 INFO L231 Difference]: Finished difference. Result has 639 places, 675 transitions, 8695 flow [2024-06-27 20:03:35,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8478, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8695, PETRI_PLACES=639, PETRI_TRANSITIONS=675} [2024-06-27 20:03:35,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 608 predicate places. [2024-06-27 20:03:35,353 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 675 transitions, 8695 flow [2024-06-27 20:03:35,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:35,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:35,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 20:03:35,354 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)] === [2024-06-27 20:03:35,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1695158246, now seen corresponding path program 16 times [2024-06-27 20:03:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604917418] [2024-06-27 20:03:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:36,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604917418] [2024-06-27 20:03:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604917418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:36,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:36,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991010772] [2024-06-27 20:03:36,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:36,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:36,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 675 transitions, 8695 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:36,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:36,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:36,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:37,673 INFO L124 PetriNetUnfolderBase]: 1405/2677 cut-off events. [2024-06-27 20:03:37,673 INFO L125 PetriNetUnfolderBase]: For 1016718/1016718 co-relation queries the response was YES. [2024-06-27 20:03:37,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26118 conditions, 2677 events. 1405/2677 cut-off events. For 1016718/1016718 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 18383 event pairs, 108 based on Foata normal form. 2/2677 useless extension candidates. Maximal degree in co-relation 25850. Up to 2184 conditions per place. [2024-06-27 20:03:37,732 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 101 changer transitions 0/695 dead transitions. [2024-06-27 20:03:37,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 695 transitions, 10625 flow [2024-06-27 20:03:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 20:03:37,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:03:37,733 INFO L175 Difference]: Start difference. First operand has 639 places, 675 transitions, 8695 flow. Second operand 12 states and 156 transitions. [2024-06-27 20:03:37,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 695 transitions, 10625 flow [2024-06-27 20:03:43,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 695 transitions, 10389 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 20:03:43,143 INFO L231 Difference]: Finished difference. Result has 640 places, 676 transitions, 8711 flow [2024-06-27 20:03:43,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8459, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8711, PETRI_PLACES=640, PETRI_TRANSITIONS=676} [2024-06-27 20:03:43,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-27 20:03:43,144 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 676 transitions, 8711 flow [2024-06-27 20:03:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 20:03:43,145 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)] === [2024-06-27 20:03:43,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1493590697, now seen corresponding path program 16 times [2024-06-27 20:03:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:43,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413346005] [2024-06-27 20:03:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:43,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413346005] [2024-06-27 20:03:44,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413346005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086187752] [2024-06-27 20:03:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:44,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:44,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 676 transitions, 8711 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:44,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:44,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:44,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:45,965 INFO L124 PetriNetUnfolderBase]: 1411/2687 cut-off events. [2024-06-27 20:03:45,966 INFO L125 PetriNetUnfolderBase]: For 1026900/1026900 co-relation queries the response was YES. [2024-06-27 20:03:46,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 2687 events. 1411/2687 cut-off events. For 1026900/1026900 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18489 event pairs, 110 based on Foata normal form. 2/2687 useless extension candidates. Maximal degree in co-relation 25989. Up to 2315 conditions per place. [2024-06-27 20:03:46,016 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 90 changer transitions 0/694 dead transitions. [2024-06-27 20:03:46,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 694 transitions, 10645 flow [2024-06-27 20:03:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:03:46,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:03:46,018 INFO L175 Difference]: Start difference. First operand has 640 places, 676 transitions, 8711 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:03:46,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 694 transitions, 10645 flow [2024-06-27 20:03:51,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 694 transitions, 10201 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-27 20:03:51,522 INFO L231 Difference]: Finished difference. Result has 640 places, 680 transitions, 8575 flow [2024-06-27 20:03:51,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8267, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8575, PETRI_PLACES=640, PETRI_TRANSITIONS=680} [2024-06-27 20:03:51,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-27 20:03:51,523 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 680 transitions, 8575 flow [2024-06-27 20:03:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:51,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:51,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:51,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 20:03:51,524 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)] === [2024-06-27 20:03:51,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash -697419235, now seen corresponding path program 17 times [2024-06-27 20:03:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:51,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821933130] [2024-06-27 20:03:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:51,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:53,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821933130] [2024-06-27 20:03:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821933130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:53,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:03:53,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463557981] [2024-06-27 20:03:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:53,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:03:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:03:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:03:53,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:03:53,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 680 transitions, 8575 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:53,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:53,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:03:53,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:54,501 INFO L124 PetriNetUnfolderBase]: 1407/2681 cut-off events. [2024-06-27 20:03:54,501 INFO L125 PetriNetUnfolderBase]: For 995702/995702 co-relation queries the response was YES. [2024-06-27 20:03:54,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25244 conditions, 2681 events. 1407/2681 cut-off events. For 995702/995702 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18461 event pairs, 113 based on Foata normal form. 2/2681 useless extension candidates. Maximal degree in co-relation 24976. Up to 2155 conditions per place. [2024-06-27 20:03:54,550 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 542 selfloop transitions, 149 changer transitions 0/694 dead transitions. [2024-06-27 20:03:54,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 694 transitions, 10391 flow [2024-06-27 20:03:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 20:03:54,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 20:03:54,552 INFO L175 Difference]: Start difference. First operand has 640 places, 680 transitions, 8575 flow. Second operand 12 states and 154 transitions. [2024-06-27 20:03:54,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 694 transitions, 10391 flow [2024-06-27 20:03:59,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 694 transitions, 10043 flow, removed 84 selfloop flow, removed 10 redundant places. [2024-06-27 20:03:59,057 INFO L231 Difference]: Finished difference. Result has 642 places, 680 transitions, 8533 flow [2024-06-27 20:03:59,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8227, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8533, PETRI_PLACES=642, PETRI_TRANSITIONS=680} [2024-06-27 20:03:59,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 611 predicate places. [2024-06-27 20:03:59,057 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 680 transitions, 8533 flow [2024-06-27 20:03:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:59,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:59,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:59,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 20:03:59,058 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)] === [2024-06-27 20:03:59,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1493800226, now seen corresponding path program 17 times [2024-06-27 20:03:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519099718] [2024-06-27 20:03:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519099718] [2024-06-27 20:04:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519099718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958486639] [2024-06-27 20:04:00,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:00,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:00,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:00,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:00,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 680 transitions, 8533 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:00,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:00,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:00,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:01,595 INFO L124 PetriNetUnfolderBase]: 1394/2658 cut-off events. [2024-06-27 20:04:01,596 INFO L125 PetriNetUnfolderBase]: For 963715/963715 co-relation queries the response was YES. [2024-06-27 20:04:01,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23093 conditions, 2658 events. 1394/2658 cut-off events. For 963715/963715 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18288 event pairs, 101 based on Foata normal form. 10/2666 useless extension candidates. Maximal degree in co-relation 22824. Up to 2280 conditions per place. [2024-06-27 20:04:01,641 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 618 selfloop transitions, 71 changer transitions 5/697 dead transitions. [2024-06-27 20:04:01,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 697 transitions, 10019 flow [2024-06-27 20:04:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:04:01,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:04:01,643 INFO L175 Difference]: Start difference. First operand has 642 places, 680 transitions, 8533 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:04:01,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 697 transitions, 10019 flow [2024-06-27 20:04:06,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 697 transitions, 9690 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 20:04:06,542 INFO L231 Difference]: Finished difference. Result has 643 places, 678 transitions, 8321 flow [2024-06-27 20:04:06,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8204, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8321, PETRI_PLACES=643, PETRI_TRANSITIONS=678} [2024-06-27 20:04:06,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-27 20:04:06,543 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 678 transitions, 8321 flow [2024-06-27 20:04:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:06,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:06,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:06,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 20:04:06,543 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)] === [2024-06-27 20:04:06,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash -898508485, now seen corresponding path program 18 times [2024-06-27 20:04:06,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:06,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980517110] [2024-06-27 20:04:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980517110] [2024-06-27 20:04:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980517110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463210802] [2024-06-27 20:04:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:07,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:08,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:08,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 678 transitions, 8321 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:08,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:08,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:08,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:09,055 INFO L124 PetriNetUnfolderBase]: 1382/2640 cut-off events. [2024-06-27 20:04:09,055 INFO L125 PetriNetUnfolderBase]: For 771618/771618 co-relation queries the response was YES. [2024-06-27 20:04:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22372 conditions, 2640 events. 1382/2640 cut-off events. For 771618/771618 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18198 event pairs, 104 based on Foata normal form. 2/2640 useless extension candidates. Maximal degree in co-relation 22102. Up to 2253 conditions per place. [2024-06-27 20:04:09,103 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 97 changer transitions 0/691 dead transitions. [2024-06-27 20:04:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 691 transitions, 9727 flow [2024-06-27 20:04:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:04:09,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:04:09,104 INFO L175 Difference]: Start difference. First operand has 643 places, 678 transitions, 8321 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:04:09,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 691 transitions, 9727 flow [2024-06-27 20:04:13,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 691 transitions, 9464 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-06-27 20:04:13,337 INFO L231 Difference]: Finished difference. Result has 643 places, 678 transitions, 8260 flow [2024-06-27 20:04:13,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8058, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8260, PETRI_PLACES=643, PETRI_TRANSITIONS=678} [2024-06-27 20:04:13,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-27 20:04:13,337 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 678 transitions, 8260 flow [2024-06-27 20:04:13,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:13,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:13,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:13,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 20:04:13,338 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)] === [2024-06-27 20:04:13,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash -317195219, now seen corresponding path program 16 times [2024-06-27 20:04:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636003544] [2024-06-27 20:04:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636003544] [2024-06-27 20:04:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636003544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:04:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466675047] [2024-06-27 20:04:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:04:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:04:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:04:14,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:14,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 678 transitions, 8260 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:14,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:14,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:14,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:15,453 INFO L124 PetriNetUnfolderBase]: 1386/2648 cut-off events. [2024-06-27 20:04:15,454 INFO L125 PetriNetUnfolderBase]: For 780453/780453 co-relation queries the response was YES. [2024-06-27 20:04:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22477 conditions, 2648 events. 1386/2648 cut-off events. For 780453/780453 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 18267 event pairs, 110 based on Foata normal form. 2/2645 useless extension candidates. Maximal degree in co-relation 22206. Up to 2162 conditions per place. [2024-06-27 20:04:15,505 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 566 selfloop transitions, 121 changer transitions 0/690 dead transitions. [2024-06-27 20:04:15,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 690 transitions, 9722 flow [2024-06-27 20:04:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:04:15,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 20:04:15,506 INFO L175 Difference]: Start difference. First operand has 643 places, 678 transitions, 8260 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:04:15,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 690 transitions, 9722 flow [2024-06-27 20:04:19,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 690 transitions, 9471 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 20:04:19,894 INFO L231 Difference]: Finished difference. Result has 643 places, 679 transitions, 8321 flow [2024-06-27 20:04:19,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8009, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8321, PETRI_PLACES=643, PETRI_TRANSITIONS=679} [2024-06-27 20:04:19,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-27 20:04:19,895 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 679 transitions, 8321 flow [2024-06-27 20:04:19,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:19,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:19,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 20:04:19,895 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)] === [2024-06-27 20:04:19,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:19,895 INFO L85 PathProgramCache]: Analyzing trace with hash 252994452, now seen corresponding path program 18 times [2024-06-27 20:04:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145309252] [2024-06-27 20:04:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145309252] [2024-06-27 20:04:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145309252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:21,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142167686] [2024-06-27 20:04:21,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:21,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:21,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 679 transitions, 8321 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:21,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:21,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:21,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:22,328 INFO L124 PetriNetUnfolderBase]: 1397/2665 cut-off events. [2024-06-27 20:04:22,328 INFO L125 PetriNetUnfolderBase]: For 832516/832516 co-relation queries the response was YES. [2024-06-27 20:04:22,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23175 conditions, 2665 events. 1397/2665 cut-off events. For 832516/832516 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 18456 event pairs, 213 based on Foata normal form. 2/2665 useless extension candidates. Maximal degree in co-relation 22903. Up to 2418 conditions per place. [2024-06-27 20:04:22,378 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 663 selfloop transitions, 30 changer transitions 0/696 dead transitions. [2024-06-27 20:04:22,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 696 transitions, 10221 flow [2024-06-27 20:04:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-27 20:04:22,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-27 20:04:22,380 INFO L175 Difference]: Start difference. First operand has 643 places, 679 transitions, 8321 flow. Second operand 13 states and 153 transitions. [2024-06-27 20:04:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 696 transitions, 10221 flow [2024-06-27 20:04:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 696 transitions, 9919 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 20:04:26,823 INFO L231 Difference]: Finished difference. Result has 647 places, 681 transitions, 8157 flow [2024-06-27 20:04:26,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8157, PETRI_PLACES=647, PETRI_TRANSITIONS=681} [2024-06-27 20:04:26,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 616 predicate places. [2024-06-27 20:04:26,823 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 681 transitions, 8157 flow [2024-06-27 20:04:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:26,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:26,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:26,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 20:04:26,824 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)] === [2024-06-27 20:04:26,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1021856757, now seen corresponding path program 19 times [2024-06-27 20:04:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751664854] [2024-06-27 20:04:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:28,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:28,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751664854] [2024-06-27 20:04:28,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751664854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:28,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:28,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217468760] [2024-06-27 20:04:28,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:28,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:28,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:28,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 681 transitions, 8157 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:28,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:28,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:28,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:29,152 INFO L124 PetriNetUnfolderBase]: 1410/2694 cut-off events. [2024-06-27 20:04:29,152 INFO L125 PetriNetUnfolderBase]: For 858707/858707 co-relation queries the response was YES. [2024-06-27 20:04:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23537 conditions, 2694 events. 1410/2694 cut-off events. For 858707/858707 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 18686 event pairs, 217 based on Foata normal form. 1/2693 useless extension candidates. Maximal degree in co-relation 23264. Up to 2448 conditions per place. [2024-06-27 20:04:29,206 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 663 selfloop transitions, 34 changer transitions 0/700 dead transitions. [2024-06-27 20:04:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 700 transitions, 10137 flow [2024-06-27 20:04:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-27 20:04:29,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-27 20:04:29,207 INFO L175 Difference]: Start difference. First operand has 647 places, 681 transitions, 8157 flow. Second operand 13 states and 153 transitions. [2024-06-27 20:04:29,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 700 transitions, 10137 flow [2024-06-27 20:04:34,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 700 transitions, 10057 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 20:04:34,112 INFO L231 Difference]: Finished difference. Result has 652 places, 687 transitions, 8319 flow [2024-06-27 20:04:34,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8077, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8319, PETRI_PLACES=652, PETRI_TRANSITIONS=687} [2024-06-27 20:04:34,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 621 predicate places. [2024-06-27 20:04:34,113 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 687 transitions, 8319 flow [2024-06-27 20:04:34,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:34,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:34,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:34,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 20:04:34,114 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)] === [2024-06-27 20:04:34,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -51767478, now seen corresponding path program 19 times [2024-06-27 20:04:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915953675] [2024-06-27 20:04:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915953675] [2024-06-27 20:04:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915953675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237318940] [2024-06-27 20:04:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:35,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:35,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:35,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 687 transitions, 8319 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:35,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:35,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:35,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:36,551 INFO L124 PetriNetUnfolderBase]: 1428/2728 cut-off events. [2024-06-27 20:04:36,551 INFO L125 PetriNetUnfolderBase]: For 931769/931769 co-relation queries the response was YES. [2024-06-27 20:04:36,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24262 conditions, 2728 events. 1428/2728 cut-off events. For 931769/931769 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 19018 event pairs, 218 based on Foata normal form. 2/2728 useless extension candidates. Maximal degree in co-relation 23986. Up to 2484 conditions per place. [2024-06-27 20:04:36,601 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 677 selfloop transitions, 26 changer transitions 0/706 dead transitions. [2024-06-27 20:04:36,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 706 transitions, 10270 flow [2024-06-27 20:04:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:04:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:04:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 20:04:36,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 20:04:36,603 INFO L175 Difference]: Start difference. First operand has 652 places, 687 transitions, 8319 flow. Second operand 12 states and 142 transitions. [2024-06-27 20:04:36,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 706 transitions, 10270 flow [2024-06-27 20:04:41,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 706 transitions, 10196 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:04:41,963 INFO L231 Difference]: Finished difference. Result has 656 places, 692 transitions, 8410 flow [2024-06-27 20:04:41,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8410, PETRI_PLACES=656, PETRI_TRANSITIONS=692} [2024-06-27 20:04:41,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 625 predicate places. [2024-06-27 20:04:41,964 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 692 transitions, 8410 flow [2024-06-27 20:04:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:41,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:41,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:41,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 20:04:41,964 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)] === [2024-06-27 20:04:41,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash 264036342, now seen corresponding path program 20 times [2024-06-27 20:04:41,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169526924] [2024-06-27 20:04:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169526924] [2024-06-27 20:04:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169526924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:43,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:43,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:04:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791269276] [2024-06-27 20:04:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:04:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:04:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:04:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:43,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 692 transitions, 8410 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:43,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:43,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:43,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:44,372 INFO L124 PetriNetUnfolderBase]: 1439/2749 cut-off events. [2024-06-27 20:04:44,373 INFO L125 PetriNetUnfolderBase]: For 985091/985091 co-relation queries the response was YES. [2024-06-27 20:04:44,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2749 events. 1439/2749 cut-off events. For 985091/985091 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 19171 event pairs, 217 based on Foata normal form. 2/2749 useless extension candidates. Maximal degree in co-relation 24696. Up to 2385 conditions per place. [2024-06-27 20:04:44,422 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 672 selfloop transitions, 36 changer transitions 0/711 dead transitions. [2024-06-27 20:04:44,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 711 transitions, 10358 flow [2024-06-27 20:04:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:04:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:04:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-27 20:04:44,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-27 20:04:44,423 INFO L175 Difference]: Start difference. First operand has 656 places, 692 transitions, 8410 flow. Second operand 13 states and 153 transitions. [2024-06-27 20:04:44,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 711 transitions, 10358 flow [2024-06-27 20:04:50,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 711 transitions, 10279 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:04:50,269 INFO L231 Difference]: Finished difference. Result has 662 places, 694 transitions, 8489 flow [2024-06-27 20:04:50,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8331, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8489, PETRI_PLACES=662, PETRI_TRANSITIONS=694} [2024-06-27 20:04:50,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 631 predicate places. [2024-06-27 20:04:50,269 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 694 transitions, 8489 flow [2024-06-27 20:04:50,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:50,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:50,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:50,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 20:04:50,270 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)] === [2024-06-27 20:04:50,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:50,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1921903684, now seen corresponding path program 21 times [2024-06-27 20:04:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224587948] [2024-06-27 20:04:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:51,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:51,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224587948] [2024-06-27 20:04:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224587948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:51,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:51,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:04:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424358209] [2024-06-27 20:04:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:04:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:04:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:04:51,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:51,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 694 transitions, 8489 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:51,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:51,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:52,308 INFO L124 PetriNetUnfolderBase]: 1437/2747 cut-off events. [2024-06-27 20:04:52,309 INFO L125 PetriNetUnfolderBase]: For 994662/994662 co-relation queries the response was YES. [2024-06-27 20:04:52,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24183 conditions, 2747 events. 1437/2747 cut-off events. For 994662/994662 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 19186 event pairs, 221 based on Foata normal form. 6/2751 useless extension candidates. Maximal degree in co-relation 23902. Up to 2496 conditions per place. [2024-06-27 20:04:52,363 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 669 selfloop transitions, 34 changer transitions 0/706 dead transitions. [2024-06-27 20:04:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 706 transitions, 9961 flow [2024-06-27 20:04:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:04:52,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-27 20:04:52,365 INFO L175 Difference]: Start difference. First operand has 662 places, 694 transitions, 8489 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:04:52,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 706 transitions, 9961 flow [2024-06-27 20:04:57,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 706 transitions, 9811 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-27 20:04:57,702 INFO L231 Difference]: Finished difference. Result has 664 places, 695 transitions, 8459 flow [2024-06-27 20:04:57,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8347, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8459, PETRI_PLACES=664, PETRI_TRANSITIONS=695} [2024-06-27 20:04:57,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 633 predicate places. [2024-06-27 20:04:57,702 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 695 transitions, 8459 flow [2024-06-27 20:04:57,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:57,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:57,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 20:04:57,703 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)] === [2024-06-27 20:04:57,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1507352316, now seen corresponding path program 22 times [2024-06-27 20:04:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797210568] [2024-06-27 20:04:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797210568] [2024-06-27 20:04:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797210568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:58,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:58,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:04:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34195314] [2024-06-27 20:04:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:04:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:58,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:04:58,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:04:58,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:04:58,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 695 transitions, 8459 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:58,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:58,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:04:58,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:59,706 INFO L124 PetriNetUnfolderBase]: 1441/2755 cut-off events. [2024-06-27 20:04:59,707 INFO L125 PetriNetUnfolderBase]: For 913760/913760 co-relation queries the response was YES. [2024-06-27 20:04:59,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24141 conditions, 2755 events. 1441/2755 cut-off events. For 913760/913760 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 19244 event pairs, 219 based on Foata normal form. 2/2755 useless extension candidates. Maximal degree in co-relation 23858. Up to 2419 conditions per place. [2024-06-27 20:04:59,760 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 672 selfloop transitions, 35 changer transitions 0/710 dead transitions. [2024-06-27 20:04:59,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 710 transitions, 10359 flow [2024-06-27 20:04:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:04:59,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:04:59,761 INFO L175 Difference]: Start difference. First operand has 664 places, 695 transitions, 8459 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:04:59,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 710 transitions, 10359 flow [2024-06-27 20:05:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 710 transitions, 10271 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:05,566 INFO L231 Difference]: Finished difference. Result has 666 places, 696 transitions, 8482 flow [2024-06-27 20:05:05,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8371, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8482, PETRI_PLACES=666, PETRI_TRANSITIONS=696} [2024-06-27 20:05:05,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 635 predicate places. [2024-06-27 20:05:05,566 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 696 transitions, 8482 flow [2024-06-27 20:05:05,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:05,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:05,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 20:05:05,567 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)] === [2024-06-27 20:05:05,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1717889099, now seen corresponding path program 17 times [2024-06-27 20:05:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318711383] [2024-06-27 20:05:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318711383] [2024-06-27 20:05:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318711383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:06,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:06,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:06,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287421836] [2024-06-27 20:05:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:06,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:06,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:06,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 696 transitions, 8482 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:06,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:07,845 INFO L124 PetriNetUnfolderBase]: 1445/2763 cut-off events. [2024-06-27 20:05:07,845 INFO L125 PetriNetUnfolderBase]: For 924268/924268 co-relation queries the response was YES. [2024-06-27 20:05:07,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24303 conditions, 2763 events. 1445/2763 cut-off events. For 924268/924268 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 19335 event pairs, 121 based on Foata normal form. 2/2760 useless extension candidates. Maximal degree in co-relation 24019. Up to 2410 conditions per place. [2024-06-27 20:05:07,899 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 634 selfloop transitions, 71 changer transitions 0/708 dead transitions. [2024-06-27 20:05:07,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 708 transitions, 9982 flow [2024-06-27 20:05:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 20:05:07,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 20:05:07,900 INFO L175 Difference]: Start difference. First operand has 666 places, 696 transitions, 8482 flow. Second operand 11 states and 138 transitions. [2024-06-27 20:05:07,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 708 transitions, 9982 flow [2024-06-27 20:05:13,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 708 transitions, 9882 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:13,678 INFO L231 Difference]: Finished difference. Result has 668 places, 697 transitions, 8596 flow [2024-06-27 20:05:13,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8596, PETRI_PLACES=668, PETRI_TRANSITIONS=697} [2024-06-27 20:05:13,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 637 predicate places. [2024-06-27 20:05:13,679 INFO L495 AbstractCegarLoop]: Abstraction has has 668 places, 697 transitions, 8596 flow [2024-06-27 20:05:13,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:13,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:13,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:13,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 20:05:13,679 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)] === [2024-06-27 20:05:13,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash -858139845, now seen corresponding path program 18 times [2024-06-27 20:05:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768923884] [2024-06-27 20:05:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768923884] [2024-06-27 20:05:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768923884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:14,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570550487] [2024-06-27 20:05:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:14,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:14,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 697 transitions, 8596 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:14,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:14,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:14,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:15,895 INFO L124 PetriNetUnfolderBase]: 1449/2771 cut-off events. [2024-06-27 20:05:15,896 INFO L125 PetriNetUnfolderBase]: For 935239/935239 co-relation queries the response was YES. [2024-06-27 20:05:15,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24498 conditions, 2771 events. 1449/2771 cut-off events. For 935239/935239 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 19363 event pairs, 119 based on Foata normal form. 2/2768 useless extension candidates. Maximal degree in co-relation 24213. Up to 2430 conditions per place. [2024-06-27 20:05:15,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 640 selfloop transitions, 66 changer transitions 0/709 dead transitions. [2024-06-27 20:05:15,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 709 transitions, 10100 flow [2024-06-27 20:05:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 20:05:15,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 20:05:15,944 INFO L175 Difference]: Start difference. First operand has 668 places, 697 transitions, 8596 flow. Second operand 11 states and 136 transitions. [2024-06-27 20:05:15,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 709 transitions, 10100 flow [2024-06-27 20:05:21,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 709 transitions, 9896 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:21,545 INFO L231 Difference]: Finished difference. Result has 670 places, 698 transitions, 8598 flow [2024-06-27 20:05:21,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8598, PETRI_PLACES=670, PETRI_TRANSITIONS=698} [2024-06-27 20:05:21,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 639 predicate places. [2024-06-27 20:05:21,546 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 698 transitions, 8598 flow [2024-06-27 20:05:21,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:21,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:21,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:21,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 20:05:21,546 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)] === [2024-06-27 20:05:21,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1052079255, now seen corresponding path program 19 times [2024-06-27 20:05:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099434] [2024-06-27 20:05:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:22,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099434] [2024-06-27 20:05:22,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:22,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:22,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836957792] [2024-06-27 20:05:22,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:22,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:22,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:23,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:23,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 698 transitions, 8598 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:23,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:23,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:23,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:23,969 INFO L124 PetriNetUnfolderBase]: 1453/2779 cut-off events. [2024-06-27 20:05:23,969 INFO L125 PetriNetUnfolderBase]: For 944216/944216 co-relation queries the response was YES. [2024-06-27 20:05:24,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24564 conditions, 2779 events. 1453/2779 cut-off events. For 944216/944216 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 19443 event pairs, 119 based on Foata normal form. 2/2776 useless extension candidates. Maximal degree in co-relation 24278. Up to 2447 conditions per place. [2024-06-27 20:05:24,023 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 645 selfloop transitions, 62 changer transitions 0/710 dead transitions. [2024-06-27 20:05:24,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 710 transitions, 10106 flow [2024-06-27 20:05:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:05:24,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 20:05:24,024 INFO L175 Difference]: Start difference. First operand has 670 places, 698 transitions, 8598 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:05:24,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 710 transitions, 10106 flow [2024-06-27 20:05:29,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 710 transitions, 9910 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:29,913 INFO L231 Difference]: Finished difference. Result has 672 places, 699 transitions, 8602 flow [2024-06-27 20:05:29,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8402, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8602, PETRI_PLACES=672, PETRI_TRANSITIONS=699} [2024-06-27 20:05:29,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 641 predicate places. [2024-06-27 20:05:29,914 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 699 transitions, 8602 flow [2024-06-27 20:05:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:29,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:29,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:29,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 20:05:29,914 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)] === [2024-06-27 20:05:29,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2095311021, now seen corresponding path program 20 times [2024-06-27 20:05:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738971424] [2024-06-27 20:05:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738971424] [2024-06-27 20:05:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738971424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:30,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:30,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373566103] [2024-06-27 20:05:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:30,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:31,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:31,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 699 transitions, 8602 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:31,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:31,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:31,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:32,050 INFO L124 PetriNetUnfolderBase]: 1457/2787 cut-off events. [2024-06-27 20:05:32,050 INFO L125 PetriNetUnfolderBase]: For 952828/952828 co-relation queries the response was YES. [2024-06-27 20:05:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24632 conditions, 2787 events. 1457/2787 cut-off events. For 952828/952828 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 19533 event pairs, 123 based on Foata normal form. 2/2784 useless extension candidates. Maximal degree in co-relation 24345. Up to 2461 conditions per place. [2024-06-27 20:05:32,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 649 selfloop transitions, 60 changer transitions 0/712 dead transitions. [2024-06-27 20:05:32,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 712 transitions, 10128 flow [2024-06-27 20:05:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:05:32,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:05:32,106 INFO L175 Difference]: Start difference. First operand has 672 places, 699 transitions, 8602 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:05:32,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 712 transitions, 10128 flow [2024-06-27 20:05:38,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 712 transitions, 9936 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:38,717 INFO L231 Difference]: Finished difference. Result has 675 places, 701 transitions, 8625 flow [2024-06-27 20:05:38,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8625, PETRI_PLACES=675, PETRI_TRANSITIONS=701} [2024-06-27 20:05:38,717 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 644 predicate places. [2024-06-27 20:05:38,718 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 701 transitions, 8625 flow [2024-06-27 20:05:38,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:38,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:38,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:38,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 20:05:38,718 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)] === [2024-06-27 20:05:38,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2095163151, now seen corresponding path program 21 times [2024-06-27 20:05:38,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753721577] [2024-06-27 20:05:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753721577] [2024-06-27 20:05:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753721577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102928226] [2024-06-27 20:05:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:39,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:39,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 701 transitions, 8625 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:39,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:39,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:39,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:40,952 INFO L124 PetriNetUnfolderBase]: 1461/2795 cut-off events. [2024-06-27 20:05:40,952 INFO L125 PetriNetUnfolderBase]: For 961905/961905 co-relation queries the response was YES. [2024-06-27 20:05:40,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24709 conditions, 2795 events. 1461/2795 cut-off events. For 961905/961905 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19643 event pairs, 121 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 24420. Up to 2464 conditions per place. [2024-06-27 20:05:41,004 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 652 selfloop transitions, 59 changer transitions 0/714 dead transitions. [2024-06-27 20:05:41,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 714 transitions, 10147 flow [2024-06-27 20:05:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:05:41,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:05:41,005 INFO L175 Difference]: Start difference. First operand has 675 places, 701 transitions, 8625 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:05:41,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 714 transitions, 10147 flow [2024-06-27 20:05:47,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 714 transitions, 9962 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 20:05:47,073 INFO L231 Difference]: Finished difference. Result has 678 places, 702 transitions, 8638 flow [2024-06-27 20:05:47,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8440, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8638, PETRI_PLACES=678, PETRI_TRANSITIONS=702} [2024-06-27 20:05:47,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 647 predicate places. [2024-06-27 20:05:47,073 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 702 transitions, 8638 flow [2024-06-27 20:05:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:47,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:47,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:47,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 20:05:47,074 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)] === [2024-06-27 20:05:47,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash 765966573, now seen corresponding path program 20 times [2024-06-27 20:05:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870992962] [2024-06-27 20:05:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:48,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870992962] [2024-06-27 20:05:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870992962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:48,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:05:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759740402] [2024-06-27 20:05:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:48,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:05:48,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:05:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:05:48,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:48,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 702 transitions, 8638 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:48,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:48,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:48,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:49,254 INFO L124 PetriNetUnfolderBase]: 1459/2792 cut-off events. [2024-06-27 20:05:49,254 INFO L125 PetriNetUnfolderBase]: For 921975/921975 co-relation queries the response was YES. [2024-06-27 20:05:49,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24376 conditions, 2792 events. 1459/2792 cut-off events. For 921975/921975 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19609 event pairs, 229 based on Foata normal form. 1/2791 useless extension candidates. Maximal degree in co-relation 24086. Up to 2544 conditions per place. [2024-06-27 20:05:49,308 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 671 selfloop transitions, 39 changer transitions 0/713 dead transitions. [2024-06-27 20:05:49,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 713 transitions, 10514 flow [2024-06-27 20:05:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:05:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:05:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:05:49,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:05:49,309 INFO L175 Difference]: Start difference. First operand has 678 places, 702 transitions, 8638 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:05:49,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 713 transitions, 10514 flow [2024-06-27 20:05:55,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 713 transitions, 10326 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:55,192 INFO L231 Difference]: Finished difference. Result has 680 places, 702 transitions, 8540 flow [2024-06-27 20:05:55,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8450, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8540, PETRI_PLACES=680, PETRI_TRANSITIONS=702} [2024-06-27 20:05:55,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 649 predicate places. [2024-06-27 20:05:55,193 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 702 transitions, 8540 flow [2024-06-27 20:05:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:55,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:55,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:05:55,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 20:05:55,194 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)] === [2024-06-27 20:05:55,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 757038852, now seen corresponding path program 23 times [2024-06-27 20:05:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357741440] [2024-06-27 20:05:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357741440] [2024-06-27 20:05:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357741440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:05:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952508340] [2024-06-27 20:05:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:05:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:05:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:05:56,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:05:56,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 702 transitions, 8540 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:56,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:56,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:05:56,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:57,918 INFO L124 PetriNetUnfolderBase]: 1456/2787 cut-off events. [2024-06-27 20:05:57,918 INFO L125 PetriNetUnfolderBase]: For 903903/903903 co-relation queries the response was YES. [2024-06-27 20:05:57,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23764 conditions, 2787 events. 1456/2787 cut-off events. For 903903/903903 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19562 event pairs, 226 based on Foata normal form. 2/2787 useless extension candidates. Maximal degree in co-relation 23473. Up to 2555 conditions per place. [2024-06-27 20:05:57,974 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 690 selfloop transitions, 22 changer transitions 0/715 dead transitions. [2024-06-27 20:05:57,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 715 transitions, 9992 flow [2024-06-27 20:05:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:05:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:05:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 20:05:57,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 20:05:57,975 INFO L175 Difference]: Start difference. First operand has 680 places, 702 transitions, 8540 flow. Second operand 12 states and 138 transitions. [2024-06-27 20:05:57,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 715 transitions, 9992 flow [2024-06-27 20:06:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 715 transitions, 9864 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 20:06:04,065 INFO L231 Difference]: Finished difference. Result has 682 places, 702 transitions, 8460 flow [2024-06-27 20:06:04,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8460, PETRI_PLACES=682, PETRI_TRANSITIONS=702} [2024-06-27 20:06:04,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 651 predicate places. [2024-06-27 20:06:04,066 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 702 transitions, 8460 flow [2024-06-27 20:06:04,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:04,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:04,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:04,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 20:06:04,067 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)] === [2024-06-27 20:06:04,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash 756762363, now seen corresponding path program 21 times [2024-06-27 20:06:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:04,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376127210] [2024-06-27 20:06:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:05,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376127210] [2024-06-27 20:06:05,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376127210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:05,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307841148] [2024-06-27 20:06:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:05,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:05,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 702 transitions, 8460 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:05,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:05,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:05,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:06,638 INFO L124 PetriNetUnfolderBase]: 1454/2784 cut-off events. [2024-06-27 20:06:06,639 INFO L125 PetriNetUnfolderBase]: For 848358/848358 co-relation queries the response was YES. [2024-06-27 20:06:06,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23373 conditions, 2784 events. 1454/2784 cut-off events. For 848358/848358 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19588 event pairs, 230 based on Foata normal form. 1/2783 useless extension candidates. Maximal degree in co-relation 23083. Up to 2537 conditions per place. [2024-06-27 20:06:06,691 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 671 selfloop transitions, 39 changer transitions 0/713 dead transitions. [2024-06-27 20:06:06,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 713 transitions, 9904 flow [2024-06-27 20:06:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:06:06,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 20:06:06,694 INFO L175 Difference]: Start difference. First operand has 682 places, 702 transitions, 8460 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:06:06,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 713 transitions, 9904 flow [2024-06-27 20:06:12,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 713 transitions, 9761 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-27 20:06:12,533 INFO L231 Difference]: Finished difference. Result has 681 places, 702 transitions, 8400 flow [2024-06-27 20:06:12,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8317, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8400, PETRI_PLACES=681, PETRI_TRANSITIONS=702} [2024-06-27 20:06:12,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 650 predicate places. [2024-06-27 20:06:12,534 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 702 transitions, 8400 flow [2024-06-27 20:06:12,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:12,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:12,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:12,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 20:06:12,535 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)] === [2024-06-27 20:06:12,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1725523190, now seen corresponding path program 24 times [2024-06-27 20:06:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424914340] [2024-06-27 20:06:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:12,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:13,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424914340] [2024-06-27 20:06:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424914340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29276655] [2024-06-27 20:06:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:14,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 702 transitions, 8400 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:14,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:14,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:14,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:15,110 INFO L124 PetriNetUnfolderBase]: 1465/2805 cut-off events. [2024-06-27 20:06:15,111 INFO L125 PetriNetUnfolderBase]: For 927784/927784 co-relation queries the response was YES. [2024-06-27 20:06:15,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23944 conditions, 2805 events. 1465/2805 cut-off events. For 927784/927784 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 19711 event pairs, 129 based on Foata normal form. 2/2801 useless extension candidates. Maximal degree in co-relation 23656. Up to 2357 conditions per place. [2024-06-27 20:06:15,168 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 615 selfloop transitions, 101 changer transitions 0/719 dead transitions. [2024-06-27 20:06:15,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 719 transitions, 10381 flow [2024-06-27 20:06:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 20:06:15,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:06:15,169 INFO L175 Difference]: Start difference. First operand has 681 places, 702 transitions, 8400 flow. Second operand 12 states and 156 transitions. [2024-06-27 20:06:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 719 transitions, 10381 flow [2024-06-27 20:06:20,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 719 transitions, 10290 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:06:20,793 INFO L231 Difference]: Finished difference. Result has 682 places, 705 transitions, 8602 flow [2024-06-27 20:06:20,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8602, PETRI_PLACES=682, PETRI_TRANSITIONS=705} [2024-06-27 20:06:20,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 651 predicate places. [2024-06-27 20:06:20,794 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 705 transitions, 8602 flow [2024-06-27 20:06:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:20,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:20,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:20,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 20:06:20,795 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)] === [2024-06-27 20:06:20,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash -60479228, now seen corresponding path program 25 times [2024-06-27 20:06:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965652361] [2024-06-27 20:06:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965652361] [2024-06-27 20:06:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965652361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:22,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:22,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:22,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103547403] [2024-06-27 20:06:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:22,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:22,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 705 transitions, 8602 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:22,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:22,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:22,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:23,616 INFO L124 PetriNetUnfolderBase]: 1472/2818 cut-off events. [2024-06-27 20:06:23,617 INFO L125 PetriNetUnfolderBase]: For 937869/937869 co-relation queries the response was YES. [2024-06-27 20:06:23,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24240 conditions, 2818 events. 1472/2818 cut-off events. For 937869/937869 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 19866 event pairs, 131 based on Foata normal form. 2/2814 useless extension candidates. Maximal degree in co-relation 23951. Up to 2143 conditions per place. [2024-06-27 20:06:23,671 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 537 selfloop transitions, 180 changer transitions 0/720 dead transitions. [2024-06-27 20:06:23,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 720 transitions, 10118 flow [2024-06-27 20:06:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 20:06:23,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 20:06:23,672 INFO L175 Difference]: Start difference. First operand has 682 places, 705 transitions, 8602 flow. Second operand 12 states and 153 transitions. [2024-06-27 20:06:23,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 720 transitions, 10118 flow [2024-06-27 20:06:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 720 transitions, 9840 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 20:06:29,651 INFO L231 Difference]: Finished difference. Result has 690 places, 708 transitions, 8753 flow [2024-06-27 20:06:29,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8324, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8753, PETRI_PLACES=690, PETRI_TRANSITIONS=708} [2024-06-27 20:06:29,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 659 predicate places. [2024-06-27 20:06:29,652 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 708 transitions, 8753 flow [2024-06-27 20:06:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:29,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 20:06:29,653 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)] === [2024-06-27 20:06:29,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1974605090, now seen corresponding path program 26 times [2024-06-27 20:06:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688785761] [2024-06-27 20:06:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:31,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688785761] [2024-06-27 20:06:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688785761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661051546] [2024-06-27 20:06:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:31,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:31,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 708 transitions, 8753 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:31,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:31,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:31,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:32,357 INFO L124 PetriNetUnfolderBase]: 1479/2831 cut-off events. [2024-06-27 20:06:32,358 INFO L125 PetriNetUnfolderBase]: For 946298/946298 co-relation queries the response was YES. [2024-06-27 20:06:32,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24605 conditions, 2831 events. 1479/2831 cut-off events. For 946298/946298 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 19941 event pairs, 131 based on Foata normal form. 2/2827 useless extension candidates. Maximal degree in co-relation 24313. Up to 2410 conditions per place. [2024-06-27 20:06:32,413 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 619 selfloop transitions, 101 changer transitions 0/723 dead transitions. [2024-06-27 20:06:32,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 723 transitions, 10285 flow [2024-06-27 20:06:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:06:32,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:06:32,415 INFO L175 Difference]: Start difference. First operand has 690 places, 708 transitions, 8753 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:06:32,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 723 transitions, 10285 flow [2024-06-27 20:06:38,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 723 transitions, 9878 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 20:06:38,690 INFO L231 Difference]: Finished difference. Result has 694 places, 711 transitions, 8627 flow [2024-06-27 20:06:38,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8348, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8627, PETRI_PLACES=694, PETRI_TRANSITIONS=711} [2024-06-27 20:06:38,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 663 predicate places. [2024-06-27 20:06:38,691 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 711 transitions, 8627 flow [2024-06-27 20:06:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:38,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:38,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 20:06:38,691 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)] === [2024-06-27 20:06:38,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:38,692 INFO L85 PathProgramCache]: Analyzing trace with hash -858133893, now seen corresponding path program 22 times [2024-06-27 20:06:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:38,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430930010] [2024-06-27 20:06:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:38,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:40,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430930010] [2024-06-27 20:06:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430930010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:40,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022286544] [2024-06-27 20:06:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:40,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:40,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 711 transitions, 8627 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:40,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:40,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:40,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:41,585 INFO L124 PetriNetUnfolderBase]: 1482/2832 cut-off events. [2024-06-27 20:06:41,586 INFO L125 PetriNetUnfolderBase]: For 934474/934474 co-relation queries the response was YES. [2024-06-27 20:06:41,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24436 conditions, 2832 events. 1482/2832 cut-off events. For 934474/934474 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 19983 event pairs, 125 based on Foata normal form. 1/2827 useless extension candidates. Maximal degree in co-relation 24142. Up to 2427 conditions per place. [2024-06-27 20:06:41,642 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 626 selfloop transitions, 96 changer transitions 0/725 dead transitions. [2024-06-27 20:06:41,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 725 transitions, 10165 flow [2024-06-27 20:06:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 20:06:41,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:06:41,643 INFO L175 Difference]: Start difference. First operand has 694 places, 711 transitions, 8627 flow. Second operand 12 states and 150 transitions. [2024-06-27 20:06:41,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 725 transitions, 10165 flow [2024-06-27 20:06:47,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 725 transitions, 9940 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 20:06:47,274 INFO L231 Difference]: Finished difference. Result has 698 places, 714 transitions, 8673 flow [2024-06-27 20:06:47,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8403, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8673, PETRI_PLACES=698, PETRI_TRANSITIONS=714} [2024-06-27 20:06:47,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 667 predicate places. [2024-06-27 20:06:47,274 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 714 transitions, 8673 flow [2024-06-27 20:06:47,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:47,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:47,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 20:06:47,275 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)] === [2024-06-27 20:06:47,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash -850782243, now seen corresponding path program 23 times [2024-06-27 20:06:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050768945] [2024-06-27 20:06:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050768945] [2024-06-27 20:06:48,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050768945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:48,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:48,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:48,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037935451] [2024-06-27 20:06:48,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:48,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:48,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 714 transitions, 8673 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:48,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:48,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:49,897 INFO L124 PetriNetUnfolderBase]: 1480/2829 cut-off events. [2024-06-27 20:06:49,897 INFO L125 PetriNetUnfolderBase]: For 917729/917729 co-relation queries the response was YES. [2024-06-27 20:06:49,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24152 conditions, 2829 events. 1480/2829 cut-off events. For 917729/917729 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 19897 event pairs, 125 based on Foata normal form. 1/2824 useless extension candidates. Maximal degree in co-relation 23857. Up to 2424 conditions per place. [2024-06-27 20:06:49,953 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 624 selfloop transitions, 99 changer transitions 0/726 dead transitions. [2024-06-27 20:06:49,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 726 transitions, 10158 flow [2024-06-27 20:06:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:06:49,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:06:49,954 INFO L175 Difference]: Start difference. First operand has 698 places, 714 transitions, 8673 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:06:49,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 726 transitions, 10158 flow [2024-06-27 20:06:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 726 transitions, 9876 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 20:06:55,995 INFO L231 Difference]: Finished difference. Result has 702 places, 715 transitions, 8609 flow [2024-06-27 20:06:55,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8609, PETRI_PLACES=702, PETRI_TRANSITIONS=715} [2024-06-27 20:06:55,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 671 predicate places. [2024-06-27 20:06:55,996 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 715 transitions, 8609 flow [2024-06-27 20:06:55,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:55,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:55,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:55,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 20:06:55,997 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)] === [2024-06-27 20:06:55,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -857924364, now seen corresponding path program 27 times [2024-06-27 20:06:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471462814] [2024-06-27 20:06:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471462814] [2024-06-27 20:06:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471462814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:57,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:57,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:06:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482143940] [2024-06-27 20:06:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:57,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:06:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:06:57,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:06:57,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:06:57,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 715 transitions, 8609 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:57,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:57,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:06:57,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:58,455 INFO L124 PetriNetUnfolderBase]: 1484/2837 cut-off events. [2024-06-27 20:06:58,456 INFO L125 PetriNetUnfolderBase]: For 950747/950747 co-relation queries the response was YES. [2024-06-27 20:06:58,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24209 conditions, 2837 events. 1484/2837 cut-off events. For 950747/950747 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 19984 event pairs, 119 based on Foata normal form. 2/2834 useless extension candidates. Maximal degree in co-relation 23913. Up to 2488 conditions per place. [2024-06-27 20:06:58,514 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 653 selfloop transitions, 72 changer transitions 0/728 dead transitions. [2024-06-27 20:06:58,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 728 transitions, 10129 flow [2024-06-27 20:06:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:06:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:06:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 20:06:58,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 20:06:58,515 INFO L175 Difference]: Start difference. First operand has 702 places, 715 transitions, 8609 flow. Second operand 12 states and 148 transitions. [2024-06-27 20:06:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 728 transitions, 10129 flow [2024-06-27 20:07:05,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 728 transitions, 9943 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:07:05,030 INFO L231 Difference]: Finished difference. Result has 706 places, 716 transitions, 8617 flow [2024-06-27 20:07:05,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8423, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8617, PETRI_PLACES=706, PETRI_TRANSITIONS=716} [2024-06-27 20:07:05,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 675 predicate places. [2024-06-27 20:07:05,031 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 716 transitions, 8617 flow [2024-06-27 20:07:05,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:05,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:05,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:05,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 20:07:05,031 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)] === [2024-06-27 20:07:05,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1725246701, now seen corresponding path program 24 times [2024-06-27 20:07:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890393548] [2024-06-27 20:07:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:06,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890393548] [2024-06-27 20:07:06,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890393548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:06,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:07:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325726308] [2024-06-27 20:07:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:07:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:07:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:07:06,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:07:06,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 716 transitions, 8617 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:06,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:06,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:07:06,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:07,593 INFO L124 PetriNetUnfolderBase]: 1482/2834 cut-off events. [2024-06-27 20:07:07,593 INFO L125 PetriNetUnfolderBase]: For 909410/909410 co-relation queries the response was YES. [2024-06-27 20:07:07,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23953 conditions, 2834 events. 1482/2834 cut-off events. For 909410/909410 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 20005 event pairs, 125 based on Foata normal form. 1/2829 useless extension candidates. Maximal degree in co-relation 23656. Up to 2387 conditions per place. [2024-06-27 20:07:07,649 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 612 selfloop transitions, 112 changer transitions 0/727 dead transitions. [2024-06-27 20:07:07,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 727 transitions, 10089 flow [2024-06-27 20:07:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:07:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:07:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 20:07:07,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-27 20:07:07,651 INFO L175 Difference]: Start difference. First operand has 706 places, 716 transitions, 8617 flow. Second operand 12 states and 155 transitions. [2024-06-27 20:07:07,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 727 transitions, 10089 flow [2024-06-27 20:07:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 727 transitions, 9853 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-27 20:07:13,722 INFO L231 Difference]: Finished difference. Result has 708 places, 716 transitions, 8610 flow [2024-06-27 20:07:13,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8381, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8610, PETRI_PLACES=708, PETRI_TRANSITIONS=716} [2024-06-27 20:07:13,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 677 predicate places. [2024-06-27 20:07:13,723 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 716 transitions, 8610 flow [2024-06-27 20:07:13,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:13,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:13,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:13,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 20:07:13,723 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)] === [2024-06-27 20:07:13,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1725254420, now seen corresponding path program 28 times [2024-06-27 20:07:13,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:13,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038246569] [2024-06-27 20:07:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:13,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:15,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:15,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038246569] [2024-06-27 20:07:15,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038246569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:15,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:15,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:07:15,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67127253] [2024-06-27 20:07:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:07:15,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:07:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:07:15,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:07:15,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 716 transitions, 8610 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:07:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:16,452 INFO L124 PetriNetUnfolderBase]: 1489/2847 cut-off events. [2024-06-27 20:07:16,453 INFO L125 PetriNetUnfolderBase]: For 941934/941934 co-relation queries the response was YES. [2024-06-27 20:07:16,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24050 conditions, 2847 events. 1489/2847 cut-off events. For 941934/941934 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20121 event pairs, 125 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 23752. Up to 2430 conditions per place. [2024-06-27 20:07:16,509 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 629 selfloop transitions, 99 changer transitions 0/731 dead transitions. [2024-06-27 20:07:16,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 731 transitions, 10146 flow [2024-06-27 20:07:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:07:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:07:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 20:07:16,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 20:07:16,510 INFO L175 Difference]: Start difference. First operand has 708 places, 716 transitions, 8610 flow. Second operand 12 states and 153 transitions. [2024-06-27 20:07:16,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 731 transitions, 10146 flow [2024-06-27 20:07:22,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 731 transitions, 9923 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:07:22,248 INFO L231 Difference]: Finished difference. Result has 713 places, 719 transitions, 8652 flow [2024-06-27 20:07:22,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8389, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8652, PETRI_PLACES=713, PETRI_TRANSITIONS=719} [2024-06-27 20:07:22,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 682 predicate places. [2024-06-27 20:07:22,248 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 719 transitions, 8652 flow [2024-06-27 20:07:22,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:22,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:22,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 20:07:22,249 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)] === [2024-06-27 20:07:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1723316949, now seen corresponding path program 25 times [2024-06-27 20:07:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318884451] [2024-06-27 20:07:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318884451] [2024-06-27 20:07:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318884451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:07:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806619895] [2024-06-27 20:07:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:07:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:23,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:07:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:07:23,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 20:07:23,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 719 transitions, 8652 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:23,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:23,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 20:07:23,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:24,855 INFO L124 PetriNetUnfolderBase]: 1487/2844 cut-off events. [2024-06-27 20:07:24,856 INFO L125 PetriNetUnfolderBase]: For 899615/899615 co-relation queries the response was YES. [2024-06-27 20:07:24,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23819 conditions, 2844 events. 1487/2844 cut-off events. For 899615/899615 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20075 event pairs, 125 based on Foata normal form. 1/2839 useless extension candidates. Maximal degree in co-relation 23519. Up to 2439 conditions per place. [2024-06-27 20:07:24,913 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 631 selfloop transitions, 96 changer transitions 0/730 dead transitions. [2024-06-27 20:07:24,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 730 transitions, 10130 flow [2024-06-27 20:07:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:07:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:07:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:07:24,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 20:07:24,915 INFO L175 Difference]: Start difference. First operand has 713 places, 719 transitions, 8652 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:07:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 730 transitions, 10130 flow [2024-06-27 20:07:30,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 730 transitions, 9872 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 20:07:30,787 INFO L231 Difference]: Finished difference. Result has 716 places, 719 transitions, 8591 flow [2024-06-27 20:07:30,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8394, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8591, PETRI_PLACES=716, PETRI_TRANSITIONS=719} [2024-06-27 20:07:30,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 685 predicate places. [2024-06-27 20:07:30,788 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 719 transitions, 8591 flow [2024-06-27 20:07:30,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:30,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:30,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:30,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 20:07:30,788 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)] === [2024-06-27 20:07:30,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -60479507, now seen corresponding path program 26 times [2024-06-27 20:07:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145831110] [2024-06-27 20:07:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15