./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.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-cde23df-m [2024-06-14 12:37:31,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:37:31,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:37:31,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:37:31,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:37:31,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:37:31,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:37:31,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:37:31,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:37:31,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:37:31,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:37:31,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:37:31,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:37:31,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:37:31,687 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:37:31,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:37:31,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:37:31,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:37:31,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:37:31,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:37:31,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:37:31,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:37:31,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:37:31,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:37:31,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:37:31,689 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:37:31,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:37:31,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:37:31,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:37:31,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:37:31,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:37:31,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:37:31,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:37:31,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:37:31,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:37:31,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:37:31,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:37:31,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:37:31,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:37:31,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:37:31,693 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:37:31,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:37:31,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:37:31,694 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:37:31,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:37:31,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:37:31,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:37:31,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:37:31,931 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:37:31,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-14 12:37:33,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:37:33,265 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:37:33,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-14 12:37:33,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c1e5ab8/af02a28dcd8a4a59b1f2db141841c561/FLAG15c639030 [2024-06-14 12:37:33,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46c1e5ab8/af02a28dcd8a4a59b1f2db141841c561 [2024-06-14 12:37:33,295 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:37:33,296 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:37:33,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-14 12:37:33,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:37:33,459 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:37:33,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:37:33,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:37:33,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:37:33,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:37:33" (1/2) ... [2024-06-14 12:37:33,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb60969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:37:33, skipping insertion in model container [2024-06-14 12:37:33,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:37:33" (1/2) ... [2024-06-14 12:37:33,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13c13aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:37:33, skipping insertion in model container [2024-06-14 12:37:33,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:37:33" (2/2) ... [2024-06-14 12:37:33,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb60969 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:33, skipping insertion in model container [2024-06-14 12:37:33,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:37:33" (2/2) ... [2024-06-14 12:37:33,471 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:37:33,521 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:37:33,522 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:37:33,522 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-14 12:37:33,523 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:37:33,523 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-14 12:37:33,558 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:37:33,884 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:37:33,894 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:37:34,010 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:37:34,041 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:37:34,042 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34 WrapperNode [2024-06-14 12:37:34,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:37:34,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:37:34,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:37:34,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:37:34,075 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 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,093 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 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,136 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-14 12:37:34,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:37:34,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:37:34,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:37:34,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:37:34,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,185 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:37:34,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:37:34,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:37:34,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:37:34,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:37:34,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (1/1) ... [2024-06-14 12:37:34,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:37:34,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:37:34,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:37:34,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:37:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:37:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:37:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:37:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:37:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:37:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:37:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:37:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:37:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:37:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:37:34,393 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:37:34,517 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:37:34,519 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:37:34,874 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:37:34,874 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:37:35,064 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:37:35,064 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:37:35,065 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:37:35 BoogieIcfgContainer [2024-06-14 12:37:35,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:37:35,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:37:35,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:37:35,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:37:35,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:37:33" (1/4) ... [2024-06-14 12:37:35,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361249ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:37:35, skipping insertion in model container [2024-06-14 12:37:35,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:37:33" (2/4) ... [2024-06-14 12:37:35,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361249ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:37:35, skipping insertion in model container [2024-06-14 12:37:35,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:37:34" (3/4) ... [2024-06-14 12:37:35,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361249ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:37:35, skipping insertion in model container [2024-06-14 12:37:35,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:37:35" (4/4) ... [2024-06-14 12:37:35,073 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-14 12:37:35,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:37:35,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:37:35,087 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:37:35,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:37:35,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 12:37:35,171 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-14 12:37:35,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:37:35,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:37:35,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 12:37:35,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-14 12:37:35,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:37:35,190 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;@a8e1b0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:37:35,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:37:35,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:37:35,195 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:37:35,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:37:35,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:35,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:37:35,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:35,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:35,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1451147604, now seen corresponding path program 1 times [2024-06-14 12:37:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708846504] [2024-06-14 12:37:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:36,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708846504] [2024-06-14 12:37:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708846504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:36,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:37:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575072591] [2024-06-14 12:37:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:36,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:37:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:36,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:37:36,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:37:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 12:37:36,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:36,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:36,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 12:37:36,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:36,396 INFO L124 PetriNetUnfolderBase]: 135/262 cut-off events. [2024-06-14 12:37:36,397 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:37:36,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 262 events. 135/262 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 942 event pairs, 79 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 516. Up to 243 conditions per place. [2024-06-14 12:37:36,401 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-14 12:37:36,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 115 flow [2024-06-14 12:37:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:37:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:37:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-14 12:37:36,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-14 12:37:36,414 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 48 transitions. [2024-06-14 12:37:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 115 flow [2024-06-14 12:37:36,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:37:36,418 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-14 12:37:36,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-14 12:37:36,421 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 12:37:36,422 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-14 12:37:36,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:36,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:36,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:36,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:37:36,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:36,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1310885271, now seen corresponding path program 1 times [2024-06-14 12:37:36,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:36,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243006052] [2024-06-14 12:37:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243006052] [2024-06-14 12:37:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243006052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:37:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831576317] [2024-06-14 12:37:36,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:36,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:37:36,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:37:36,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:37:36,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 12:37:36,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:36,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:36,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 12:37:36,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:37,004 INFO L124 PetriNetUnfolderBase]: 159/292 cut-off events. [2024-06-14 12:37:37,005 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 12:37:37,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 292 events. 159/292 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 994 event pairs, 79 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-14 12:37:37,010 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 27 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-14 12:37:37,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 159 flow [2024-06-14 12:37:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:37:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:37:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-14 12:37:37,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-14 12:37:37,012 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 58 transitions. [2024-06-14 12:37:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 159 flow [2024-06-14 12:37:37,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:37:37,013 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-14 12:37:37,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-14 12:37:37,014 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-14 12:37:37,014 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-14 12:37:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:37,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:37,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:37,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:37:37,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:37,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2001504973, now seen corresponding path program 1 times [2024-06-14 12:37:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:37,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33191330] [2024-06-14 12:37:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:37,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33191330] [2024-06-14 12:37:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33191330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:37:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030847705] [2024-06-14 12:37:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:37,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:37:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:37:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:37:37,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 12:37:37,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:37,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:37,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 12:37:37,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:37,563 INFO L124 PetriNetUnfolderBase]: 153/282 cut-off events. [2024-06-14 12:37:37,563 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-14 12:37:37,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 282 events. 153/282 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 949 event pairs, 43 based on Foata normal form. 4/285 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-14 12:37:37,565 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-14 12:37:37,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 211 flow [2024-06-14 12:37:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:37:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:37:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-14 12:37:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-14 12:37:37,567 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 71 transitions. [2024-06-14 12:37:37,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 211 flow [2024-06-14 12:37:37,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:37:37,569 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-14 12:37:37,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-14 12:37:37,570 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-14 12:37:37,570 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-14 12:37:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:37,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:37,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:37:37,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:37,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash 699105586, now seen corresponding path program 1 times [2024-06-14 12:37:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143731154] [2024-06-14 12:37:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:38,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143731154] [2024-06-14 12:37:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143731154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:38,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:37:38,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097726698] [2024-06-14 12:37:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:38,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:37:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:37:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:37:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 12:37:38,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:38,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:38,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 12:37:38,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:38,437 INFO L124 PetriNetUnfolderBase]: 149/274 cut-off events. [2024-06-14 12:37:38,437 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-14 12:37:38,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 274 events. 149/274 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 896 event pairs, 24 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-14 12:37:38,438 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 12:37:38,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 225 flow [2024-06-14 12:37:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:37:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:37:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 12:37:38,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:37:38,440 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 78 transitions. [2024-06-14 12:37:38,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 225 flow [2024-06-14 12:37:38,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:38,442 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-14 12:37:38,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-14 12:37:38,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-14 12:37:38,443 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-14 12:37:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:38,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:38,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:37:38,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:38,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 51822220, now seen corresponding path program 1 times [2024-06-14 12:37:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:38,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790837407] [2024-06-14 12:37:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:38,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:38,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790837407] [2024-06-14 12:37:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790837407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:37:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513734246] [2024-06-14 12:37:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:37:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:37:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:37:39,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 12:37:39,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:39,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:39,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 12:37:39,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:39,139 INFO L124 PetriNetUnfolderBase]: 120/238 cut-off events. [2024-06-14 12:37:39,140 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-06-14 12:37:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 238 events. 120/238 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 812 event pairs, 41 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 669. Up to 214 conditions per place. [2024-06-14 12:37:39,141 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-14 12:37:39,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 194 flow [2024-06-14 12:37:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:37:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:37:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-06-14 12:37:39,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-14 12:37:39,144 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 58 transitions. [2024-06-14 12:37:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 194 flow [2024-06-14 12:37:39,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:37:39,149 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-14 12:37:39,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-14 12:37:39,151 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-14 12:37:39,153 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-14 12:37:39,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:39,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:39,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:37:39,158 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)] === [2024-06-14 12:37:39,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2052118479, now seen corresponding path program 1 times [2024-06-14 12:37:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560243474] [2024-06-14 12:37:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560243474] [2024-06-14 12:37:39,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560243474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:39,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:39,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:37:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035600839] [2024-06-14 12:37:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:37:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:37:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:37:39,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:39,919 INFO L124 PetriNetUnfolderBase]: 148/273 cut-off events. [2024-06-14 12:37:39,920 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-06-14 12:37:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 273 events. 148/273 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 901 event pairs, 51 based on Foata normal form. 1/273 useless extension candidates. Maximal degree in co-relation 818. Up to 252 conditions per place. [2024-06-14 12:37:39,921 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-14 12:37:39,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 225 flow [2024-06-14 12:37:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:37:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:37:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 12:37:39,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:37:39,923 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 65 transitions. [2024-06-14 12:37:39,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 225 flow [2024-06-14 12:37:39,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 214 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:39,924 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 141 flow [2024-06-14 12:37:39,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-14 12:37:39,925 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-14 12:37:39,925 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 141 flow [2024-06-14 12:37:39,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:39,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:39,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:37:39,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:39,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1738433557, now seen corresponding path program 2 times [2024-06-14 12:37:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138147039] [2024-06-14 12:37:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138147039] [2024-06-14 12:37:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138147039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:40,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:40,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:37:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942974532] [2024-06-14 12:37:40,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:37:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:37:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:37:40,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:40,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:40,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:40,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:40,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:40,805 INFO L124 PetriNetUnfolderBase]: 146/271 cut-off events. [2024-06-14 12:37:40,805 INFO L125 PetriNetUnfolderBase]: For 635/637 co-relation queries the response was YES. [2024-06-14 12:37:40,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 271 events. 146/271 cut-off events. For 635/637 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 898 event pairs, 55 based on Foata normal form. 3/273 useless extension candidates. Maximal degree in co-relation 871. Up to 243 conditions per place. [2024-06-14 12:37:40,807 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2024-06-14 12:37:40,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 251 flow [2024-06-14 12:37:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:37:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:37:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 12:37:40,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-14 12:37:40,808 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 141 flow. Second operand 6 states and 64 transitions. [2024-06-14 12:37:40,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 251 flow [2024-06-14 12:37:40,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 236 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 12:37:40,810 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 183 flow [2024-06-14 12:37:40,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-14 12:37:40,811 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-14 12:37:40,811 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 183 flow [2024-06-14 12:37:40,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:40,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:40,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:37:40,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:40,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1738425621, now seen corresponding path program 1 times [2024-06-14 12:37:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697569849] [2024-06-14 12:37:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697569849] [2024-06-14 12:37:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697569849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898458953] [2024-06-14 12:37:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:41,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:41,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 183 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:41,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:41,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:41,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:41,686 INFO L124 PetriNetUnfolderBase]: 144/267 cut-off events. [2024-06-14 12:37:41,686 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-14 12:37:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 267 events. 144/267 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 878 event pairs, 50 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 923. Up to 249 conditions per place. [2024-06-14 12:37:41,688 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 10 changer transitions 0/44 dead transitions. [2024-06-14 12:37:41,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 291 flow [2024-06-14 12:37:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-14 12:37:41,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:37:41,689 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 183 flow. Second operand 7 states and 70 transitions. [2024-06-14 12:37:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 291 flow [2024-06-14 12:37:41,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 279 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:37:41,691 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 208 flow [2024-06-14 12:37:41,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-14 12:37:41,692 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-14 12:37:41,692 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 208 flow [2024-06-14 12:37:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:41,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:41,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:41,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:37:41,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:41,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash -808955857, now seen corresponding path program 1 times [2024-06-14 12:37:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:41,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370949821] [2024-06-14 12:37:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:42,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:42,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370949821] [2024-06-14 12:37:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370949821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:42,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:42,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580246502] [2024-06-14 12:37:42,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:42,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:42,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:42,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:42,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:42,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:42,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:42,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:42,414 INFO L124 PetriNetUnfolderBase]: 150/277 cut-off events. [2024-06-14 12:37:42,422 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2024-06-14 12:37:42,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 277 events. 150/277 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 917 event pairs, 34 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 1017. Up to 235 conditions per place. [2024-06-14 12:37:42,425 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-06-14 12:37:42,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 364 flow [2024-06-14 12:37:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 12:37:42,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 12:37:42,426 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 208 flow. Second operand 7 states and 78 transitions. [2024-06-14 12:37:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 364 flow [2024-06-14 12:37:42,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 329 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:42,428 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 227 flow [2024-06-14 12:37:42,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-14 12:37:42,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-14 12:37:42,429 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 227 flow [2024-06-14 12:37:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:42,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:42,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:42,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:37:42,430 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)] === [2024-06-14 12:37:42,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash -808835887, now seen corresponding path program 2 times [2024-06-14 12:37:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:42,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735183305] [2024-06-14 12:37:42,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:42,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735183305] [2024-06-14 12:37:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735183305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558070757] [2024-06-14 12:37:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:43,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:43,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:43,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:43,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:43,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:43,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:43,183 INFO L124 PetriNetUnfolderBase]: 161/295 cut-off events. [2024-06-14 12:37:43,183 INFO L125 PetriNetUnfolderBase]: For 1334/1334 co-relation queries the response was YES. [2024-06-14 12:37:43,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 295 events. 161/295 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 992 event pairs, 34 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 1177. Up to 240 conditions per place. [2024-06-14 12:37:43,185 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-14 12:37:43,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 419 flow [2024-06-14 12:37:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:37:43,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-14 12:37:43,186 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 227 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:37:43,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 419 flow [2024-06-14 12:37:43,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 401 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:43,189 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 278 flow [2024-06-14 12:37:43,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 12:37:43,189 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-14 12:37:43,189 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 278 flow [2024-06-14 12:37:43,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:43,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:43,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:43,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:37:43,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:43,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1936706381, now seen corresponding path program 1 times [2024-06-14 12:37:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675721021] [2024-06-14 12:37:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:43,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675721021] [2024-06-14 12:37:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675721021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074397025] [2024-06-14 12:37:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:43,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:43,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:43,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:43,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:43,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:44,041 INFO L124 PetriNetUnfolderBase]: 164/300 cut-off events. [2024-06-14 12:37:44,041 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-14 12:37:44,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 300 events. 164/300 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1015 event pairs, 34 based on Foata normal form. 1/300 useless extension candidates. Maximal degree in co-relation 1268. Up to 276 conditions per place. [2024-06-14 12:37:44,045 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-14 12:37:44,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 424 flow [2024-06-14 12:37:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 12:37:44,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-14 12:37:44,046 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 278 flow. Second operand 7 states and 73 transitions. [2024-06-14 12:37:44,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 424 flow [2024-06-14 12:37:44,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 404 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:44,051 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 299 flow [2024-06-14 12:37:44,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=299, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-14 12:37:44,052 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-14 12:37:44,052 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 299 flow [2024-06-14 12:37:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:44,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:44,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:44,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:37:44,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:44,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1943135471, now seen corresponding path program 2 times [2024-06-14 12:37:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167758754] [2024-06-14 12:37:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167758754] [2024-06-14 12:37:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167758754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:44,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972961935] [2024-06-14 12:37:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:44,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:44,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:44,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:44,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:44,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:44,904 INFO L124 PetriNetUnfolderBase]: 167/306 cut-off events. [2024-06-14 12:37:44,904 INFO L125 PetriNetUnfolderBase]: For 1945/1949 co-relation queries the response was YES. [2024-06-14 12:37:44,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 306 events. 167/306 cut-off events. For 1945/1949 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1040 event pairs, 38 based on Foata normal form. 5/310 useless extension candidates. Maximal degree in co-relation 1350. Up to 265 conditions per place. [2024-06-14 12:37:44,906 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2024-06-14 12:37:44,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 485 flow [2024-06-14 12:37:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-14 12:37:44,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-14 12:37:44,907 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 299 flow. Second operand 7 states and 75 transitions. [2024-06-14 12:37:44,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 485 flow [2024-06-14 12:37:44,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 460 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:37:44,910 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 349 flow [2024-06-14 12:37:44,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-14 12:37:44,911 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-14 12:37:44,911 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 349 flow [2024-06-14 12:37:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:44,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:44,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:44,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:37:44,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:44,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:44,912 INFO L85 PathProgramCache]: Analyzing trace with hash -804194257, now seen corresponding path program 3 times [2024-06-14 12:37:44,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:44,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073628354] [2024-06-14 12:37:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:44,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:45,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:45,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073628354] [2024-06-14 12:37:45,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073628354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:45,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:45,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619552855] [2024-06-14 12:37:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:45,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:45,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:45,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:45,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:45,588 INFO L124 PetriNetUnfolderBase]: 163/300 cut-off events. [2024-06-14 12:37:45,588 INFO L125 PetriNetUnfolderBase]: For 2233/2237 co-relation queries the response was YES. [2024-06-14 12:37:45,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 300 events. 163/300 cut-off events. For 2233/2237 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1014 event pairs, 44 based on Foata normal form. 3/302 useless extension candidates. Maximal degree in co-relation 1361. Up to 232 conditions per place. [2024-06-14 12:37:45,590 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-14 12:37:45,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 539 flow [2024-06-14 12:37:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 12:37:45,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 12:37:45,592 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 349 flow. Second operand 7 states and 78 transitions. [2024-06-14 12:37:45,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 539 flow [2024-06-14 12:37:45,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 513 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:45,595 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 390 flow [2024-06-14 12:37:45,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-14 12:37:45,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-14 12:37:45,596 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 390 flow [2024-06-14 12:37:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:45,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:45,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:45,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:37:45,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2096597613, now seen corresponding path program 3 times [2024-06-14 12:37:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259199799] [2024-06-14 12:37:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259199799] [2024-06-14 12:37:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259199799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:37:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509703545] [2024-06-14 12:37:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:46,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:37:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:37:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:37:46,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:46,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:46,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:46,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:46,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:46,381 INFO L124 PetriNetUnfolderBase]: 161/296 cut-off events. [2024-06-14 12:37:46,381 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-06-14 12:37:46,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 296 events. 161/296 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1000 event pairs, 33 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 1413. Up to 278 conditions per place. [2024-06-14 12:37:46,383 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-14 12:37:46,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 60 transitions, 522 flow [2024-06-14 12:37:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-14 12:37:46,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:37:46,384 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 390 flow. Second operand 7 states and 70 transitions. [2024-06-14 12:37:46,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 60 transitions, 522 flow [2024-06-14 12:37:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 461 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 12:37:46,388 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 354 flow [2024-06-14 12:37:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-14 12:37:46,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-14 12:37:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 354 flow [2024-06-14 12:37:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:46,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:37:46,390 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash -631458103, now seen corresponding path program 1 times [2024-06-14 12:37:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584799845] [2024-06-14 12:37:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:47,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:47,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584799845] [2024-06-14 12:37:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584799845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:47,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:47,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107140915] [2024-06-14 12:37:47,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:47,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:47,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:47,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:47,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 354 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:47,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:47,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:47,267 INFO L124 PetriNetUnfolderBase]: 158/291 cut-off events. [2024-06-14 12:37:47,268 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-14 12:37:47,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 291 events. 158/291 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 975 event pairs, 32 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 1339. Up to 267 conditions per place. [2024-06-14 12:37:47,269 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 49 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-14 12:37:47,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 62 transitions, 494 flow [2024-06-14 12:37:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-14 12:37:47,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32083333333333336 [2024-06-14 12:37:47,271 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 354 flow. Second operand 8 states and 77 transitions. [2024-06-14 12:37:47,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 62 transitions, 494 flow [2024-06-14 12:37:47,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 469 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:47,274 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 355 flow [2024-06-14 12:37:47,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-06-14 12:37:47,274 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-14 12:37:47,274 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 355 flow [2024-06-14 12:37:47,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:47,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:47,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:37:47,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:47,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash 692082734, now seen corresponding path program 1 times [2024-06-14 12:37:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:47,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947158839] [2024-06-14 12:37:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947158839] [2024-06-14 12:37:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947158839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:47,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93564556] [2024-06-14 12:37:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:47,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:47,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:47,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 355 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:47,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:47,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:48,205 INFO L124 PetriNetUnfolderBase]: 156/288 cut-off events. [2024-06-14 12:37:48,205 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-06-14 12:37:48,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 288 events. 156/288 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 963 event pairs, 31 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1337. Up to 243 conditions per place. [2024-06-14 12:37:48,207 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-14 12:37:48,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 521 flow [2024-06-14 12:37:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:37:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:37:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 12:37:48,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 12:37:48,209 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 355 flow. Second operand 7 states and 78 transitions. [2024-06-14 12:37:48,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 521 flow [2024-06-14 12:37:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 493 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:48,212 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 361 flow [2024-06-14 12:37:48,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2024-06-14 12:37:48,213 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-14 12:37:48,213 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 361 flow [2024-06-14 12:37:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:48,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:48,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:37:48,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:48,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash 692173099, now seen corresponding path program 1 times [2024-06-14 12:37:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389815086] [2024-06-14 12:37:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389815086] [2024-06-14 12:37:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389815086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:48,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829336798] [2024-06-14 12:37:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:48,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:48,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 361 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:48,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:48,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:48,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:49,143 INFO L124 PetriNetUnfolderBase]: 162/298 cut-off events. [2024-06-14 12:37:49,143 INFO L125 PetriNetUnfolderBase]: For 3038/3038 co-relation queries the response was YES. [2024-06-14 12:37:49,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 298 events. 162/298 cut-off events. For 3038/3038 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1010 event pairs, 30 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 1408. Up to 248 conditions per place. [2024-06-14 12:37:49,145 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2024-06-14 12:37:49,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 559 flow [2024-06-14 12:37:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:37:49,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:37:49,146 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 361 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:37:49,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 559 flow [2024-06-14 12:37:49,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 526 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:49,151 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 383 flow [2024-06-14 12:37:49,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-06-14 12:37:49,151 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-14 12:37:49,151 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 383 flow [2024-06-14 12:37:49,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:49,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:49,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:37:49,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:49,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash 695892169, now seen corresponding path program 2 times [2024-06-14 12:37:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89511488] [2024-06-14 12:37:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:49,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89511488] [2024-06-14 12:37:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89511488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037738877] [2024-06-14 12:37:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:49,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:49,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:49,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:49,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:49,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:49,972 INFO L124 PetriNetUnfolderBase]: 208/372 cut-off events. [2024-06-14 12:37:49,973 INFO L125 PetriNetUnfolderBase]: For 4755/4755 co-relation queries the response was YES. [2024-06-14 12:37:49,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 372 events. 208/372 cut-off events. For 4755/4755 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1361 event pairs, 33 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1907. Up to 248 conditions per place. [2024-06-14 12:37:49,975 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-14 12:37:49,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 735 flow [2024-06-14 12:37:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 12:37:49,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:37:49,977 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 383 flow. Second operand 8 states and 93 transitions. [2024-06-14 12:37:49,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 735 flow [2024-06-14 12:37:49,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 696 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:49,982 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 502 flow [2024-06-14 12:37:49,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-14 12:37:49,982 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-14 12:37:49,983 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 502 flow [2024-06-14 12:37:49,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:49,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:49,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:37:49,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash 695897966, now seen corresponding path program 1 times [2024-06-14 12:37:49,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:49,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110498428] [2024-06-14 12:37:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110498428] [2024-06-14 12:37:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110498428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84473933] [2024-06-14 12:37:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:50,833 INFO L124 PetriNetUnfolderBase]: 204/367 cut-off events. [2024-06-14 12:37:50,834 INFO L125 PetriNetUnfolderBase]: For 5223/5223 co-relation queries the response was YES. [2024-06-14 12:37:50,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 367 events. 204/367 cut-off events. For 5223/5223 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1324 event pairs, 33 based on Foata normal form. 3/369 useless extension candidates. Maximal degree in co-relation 2006. Up to 256 conditions per place. [2024-06-14 12:37:50,836 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-14 12:37:50,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 780 flow [2024-06-14 12:37:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:37:50,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:37:50,838 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 502 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:37:50,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 780 flow [2024-06-14 12:37:50,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 750 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:50,844 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 597 flow [2024-06-14 12:37:50,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-06-14 12:37:50,845 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-14 12:37:50,845 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 597 flow [2024-06-14 12:37:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:50,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:50,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:37:50,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 425924927, now seen corresponding path program 3 times [2024-06-14 12:37:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219145110] [2024-06-14 12:37:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219145110] [2024-06-14 12:37:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219145110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:51,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:51,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117204563] [2024-06-14 12:37:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:51,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:51,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:51,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:51,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:51,540 INFO L124 PetriNetUnfolderBase]: 195/353 cut-off events. [2024-06-14 12:37:51,540 INFO L125 PetriNetUnfolderBase]: For 5284/5284 co-relation queries the response was YES. [2024-06-14 12:37:51,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 353 events. 195/353 cut-off events. For 5284/5284 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1256 event pairs, 32 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1981. Up to 242 conditions per place. [2024-06-14 12:37:51,542 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2024-06-14 12:37:51,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 833 flow [2024-06-14 12:37:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:51,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:37:51,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-14 12:37:51,544 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 597 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:37:51,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 833 flow [2024-06-14 12:37:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 750 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 12:37:51,551 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 574 flow [2024-06-14 12:37:51,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-14 12:37:51,552 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-14 12:37:51,552 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 574 flow [2024-06-14 12:37:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:51,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:51,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:51,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:37:51,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:51,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1892007573, now seen corresponding path program 4 times [2024-06-14 12:37:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850113669] [2024-06-14 12:37:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850113669] [2024-06-14 12:37:52,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850113669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:52,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923100028] [2024-06-14 12:37:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:52,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:52,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:52,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:52,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:52,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:52,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:52,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:52,328 INFO L124 PetriNetUnfolderBase]: 234/418 cut-off events. [2024-06-14 12:37:52,328 INFO L125 PetriNetUnfolderBase]: For 7119/7123 co-relation queries the response was YES. [2024-06-14 12:37:52,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2438 conditions, 418 events. 234/418 cut-off events. For 7119/7123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1562 event pairs, 45 based on Foata normal form. 5/422 useless extension candidates. Maximal degree in co-relation 2394. Up to 205 conditions per place. [2024-06-14 12:37:52,331 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 34 changer transitions 0/92 dead transitions. [2024-06-14 12:37:52,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 1050 flow [2024-06-14 12:37:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 12:37:52,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-14 12:37:52,333 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 574 flow. Second operand 8 states and 98 transitions. [2024-06-14 12:37:52,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 1050 flow [2024-06-14 12:37:52,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 1005 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:52,341 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 709 flow [2024-06-14 12:37:52,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=709, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-14 12:37:52,341 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-14 12:37:52,342 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 709 flow [2024-06-14 12:37:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:52,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:52,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:37:52,342 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 107658378, now seen corresponding path program 2 times [2024-06-14 12:37:52,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373867326] [2024-06-14 12:37:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373867326] [2024-06-14 12:37:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373867326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:52,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:52,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334786222] [2024-06-14 12:37:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:53,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:53,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:53,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:53,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:53,189 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 12:37:53,189 INFO L125 PetriNetUnfolderBase]: For 7122/7126 co-relation queries the response was YES. [2024-06-14 12:37:53,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 409 events. 228/409 cut-off events. For 7122/7126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1525 event pairs, 45 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 2438. Up to 260 conditions per place. [2024-06-14 12:37:53,192 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 36 changer transitions 0/94 dead transitions. [2024-06-14 12:37:53,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 1145 flow [2024-06-14 12:37:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:37:53,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:37:53,193 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 709 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:37:53,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 1145 flow [2024-06-14 12:37:53,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 1036 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-14 12:37:53,203 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 787 flow [2024-06-14 12:37:53,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-14 12:37:53,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-14 12:37:53,204 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 787 flow [2024-06-14 12:37:53,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:53,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:53,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:53,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:37:53,204 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:53,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1150317767, now seen corresponding path program 5 times [2024-06-14 12:37:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503994955] [2024-06-14 12:37:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:53,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:53,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503994955] [2024-06-14 12:37:53,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503994955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:53,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:53,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163142895] [2024-06-14 12:37:53,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:53,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:53,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:53,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:53,921 INFO L124 PetriNetUnfolderBase]: 232/415 cut-off events. [2024-06-14 12:37:53,922 INFO L125 PetriNetUnfolderBase]: For 7289/7293 co-relation queries the response was YES. [2024-06-14 12:37:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 415 events. 232/415 cut-off events. For 7289/7293 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1560 event pairs, 43 based on Foata normal form. 3/417 useless extension candidates. Maximal degree in co-relation 2458. Up to 206 conditions per place. [2024-06-14 12:37:53,924 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-14 12:37:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 1185 flow [2024-06-14 12:37:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:37:53,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-14 12:37:53,926 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 787 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:37:53,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 1185 flow [2024-06-14 12:37:53,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 1114 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-14 12:37:53,937 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 860 flow [2024-06-14 12:37:53,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-14 12:37:53,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-14 12:37:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 860 flow [2024-06-14 12:37:53,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:53,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:53,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:53,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:37:53,938 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:53,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1899626350, now seen corresponding path program 3 times [2024-06-14 12:37:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294131362] [2024-06-14 12:37:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:54,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:54,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294131362] [2024-06-14 12:37:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294131362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:54,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:54,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:54,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788103426] [2024-06-14 12:37:54,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:54,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:54,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:54,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:54,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 860 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:54,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:54,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:54,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:54,875 INFO L124 PetriNetUnfolderBase]: 230/411 cut-off events. [2024-06-14 12:37:54,875 INFO L125 PetriNetUnfolderBase]: For 7193/7193 co-relation queries the response was YES. [2024-06-14 12:37:54,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 411 events. 230/411 cut-off events. For 7193/7193 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1524 event pairs, 42 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2531. Up to 385 conditions per place. [2024-06-14 12:37:54,879 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-14 12:37:54,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 92 transitions, 1069 flow [2024-06-14 12:37:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:37:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:37:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-14 12:37:54,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-14 12:37:54,880 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 860 flow. Second operand 9 states and 86 transitions. [2024-06-14 12:37:54,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 92 transitions, 1069 flow [2024-06-14 12:37:54,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 92 transitions, 999 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:37:54,895 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 835 flow [2024-06-14 12:37:54,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-06-14 12:37:54,896 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-14 12:37:54,896 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 835 flow [2024-06-14 12:37:54,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:54,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:54,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:54,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:37:54,897 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:54,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:54,898 INFO L85 PathProgramCache]: Analyzing trace with hash 570017267, now seen corresponding path program 6 times [2024-06-14 12:37:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:54,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576282505] [2024-06-14 12:37:54,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576282505] [2024-06-14 12:37:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576282505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:55,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:37:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867759986] [2024-06-14 12:37:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:37:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:37:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:37:55,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:55,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 835 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:55,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:55,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:55,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:55,669 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-14 12:37:55,669 INFO L125 PetriNetUnfolderBase]: For 7252/7252 co-relation queries the response was YES. [2024-06-14 12:37:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 399 events. 222/399 cut-off events. For 7252/7252 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1488 event pairs, 35 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 2321. Up to 350 conditions per place. [2024-06-14 12:37:55,672 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 74 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2024-06-14 12:37:55,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 94 transitions, 1095 flow [2024-06-14 12:37:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 12:37:55,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:37:55,673 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 835 flow. Second operand 8 states and 85 transitions. [2024-06-14 12:37:55,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 94 transitions, 1095 flow [2024-06-14 12:37:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 1033 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 12:37:55,685 INFO L231 Difference]: Finished difference. Result has 106 places, 83 transitions, 817 flow [2024-06-14 12:37:55,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=817, PETRI_PLACES=106, PETRI_TRANSITIONS=83} [2024-06-14 12:37:55,685 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-14 12:37:55,685 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 83 transitions, 817 flow [2024-06-14 12:37:55,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:55,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:55,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:37:55,686 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:55,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -20331410, now seen corresponding path program 1 times [2024-06-14 12:37:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:55,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432368209] [2024-06-14 12:37:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432368209] [2024-06-14 12:37:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432368209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:37:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575415786] [2024-06-14 12:37:56,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:56,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:37:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:37:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:37:56,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:56,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 83 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:56,580 INFO L124 PetriNetUnfolderBase]: 226/407 cut-off events. [2024-06-14 12:37:56,581 INFO L125 PetriNetUnfolderBase]: For 7307/7307 co-relation queries the response was YES. [2024-06-14 12:37:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 407 events. 226/407 cut-off events. For 7307/7307 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1529 event pairs, 22 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 2359. Up to 345 conditions per place. [2024-06-14 12:37:56,584 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 87 selfloop transitions, 11 changer transitions 0/100 dead transitions. [2024-06-14 12:37:56,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 1063 flow [2024-06-14 12:37:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 12:37:56,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 12:37:56,585 INFO L175 Difference]: Start difference. First operand has 106 places, 83 transitions, 817 flow. Second operand 8 states and 84 transitions. [2024-06-14 12:37:56,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 1063 flow [2024-06-14 12:37:56,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 994 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:37:56,598 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 788 flow [2024-06-14 12:37:56,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-06-14 12:37:56,598 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-14 12:37:56,598 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 788 flow [2024-06-14 12:37:56,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:56,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:56,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:56,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:37:56,599 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:56,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 200506150, now seen corresponding path program 2 times [2024-06-14 12:37:56,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409928691] [2024-06-14 12:37:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:56,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:57,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:57,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409928691] [2024-06-14 12:37:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409928691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:57,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:57,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:37:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775972878] [2024-06-14 12:37:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:37:57,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:37:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:37:57,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:57,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:57,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:57,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:57,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:57,644 INFO L124 PetriNetUnfolderBase]: 230/415 cut-off events. [2024-06-14 12:37:57,644 INFO L125 PetriNetUnfolderBase]: For 7749/7749 co-relation queries the response was YES. [2024-06-14 12:37:57,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 415 events. 230/415 cut-off events. For 7749/7749 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1582 event pairs, 34 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2389. Up to 362 conditions per place. [2024-06-14 12:37:57,648 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 85 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-14 12:37:57,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1040 flow [2024-06-14 12:37:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:37:57,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-14 12:37:57,650 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 788 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:37:57,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1040 flow [2024-06-14 12:37:57,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 1010 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:57,664 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 807 flow [2024-06-14 12:37:57,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=807, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-06-14 12:37:57,664 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-14 12:37:57,665 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 807 flow [2024-06-14 12:37:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:57,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:57,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:57,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:37:57,665 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:57,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -17589646, now seen corresponding path program 1 times [2024-06-14 12:37:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:57,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190548659] [2024-06-14 12:37:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:57,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:58,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190548659] [2024-06-14 12:37:58,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190548659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:58,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:37:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942164412] [2024-06-14 12:37:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:58,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:37:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:37:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:37:58,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:58,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 807 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:58,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:58,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:58,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:58,575 INFO L124 PetriNetUnfolderBase]: 227/410 cut-off events. [2024-06-14 12:37:58,575 INFO L125 PetriNetUnfolderBase]: For 7739/7739 co-relation queries the response was YES. [2024-06-14 12:37:58,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 410 events. 227/410 cut-off events. For 7739/7739 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1552 event pairs, 33 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2348. Up to 354 conditions per place. [2024-06-14 12:37:58,578 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-06-14 12:37:58,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 101 transitions, 1047 flow [2024-06-14 12:37:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:37:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:37:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:37:58,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:37:58,579 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 807 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:37:58,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 101 transitions, 1047 flow [2024-06-14 12:37:58,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 1002 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 12:37:58,593 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 804 flow [2024-06-14 12:37:58,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2024-06-14 12:37:58,593 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-14 12:37:58,594 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 804 flow [2024-06-14 12:37:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:58,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:58,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:37:58,594 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:58,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash 318778528, now seen corresponding path program 1 times [2024-06-14 12:37:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:58,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959306129] [2024-06-14 12:37:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:37:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:37:59,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:37:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959306129] [2024-06-14 12:37:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959306129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:37:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:37:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:37:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430482974] [2024-06-14 12:37:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:37:59,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:37:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:37:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:37:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:37:59,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:37:59,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:59,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:37:59,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:37:59,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:37:59,482 INFO L124 PetriNetUnfolderBase]: 231/418 cut-off events. [2024-06-14 12:37:59,483 INFO L125 PetriNetUnfolderBase]: For 8724/8724 co-relation queries the response was YES. [2024-06-14 12:37:59,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 418 events. 231/418 cut-off events. For 8724/8724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1601 event pairs, 37 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2402. Up to 385 conditions per place. [2024-06-14 12:37:59,486 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2024-06-14 12:37:59,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 100 transitions, 1056 flow [2024-06-14 12:37:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:37:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:37:59,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 12:37:59,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-14 12:37:59,489 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 804 flow. Second operand 9 states and 89 transitions. [2024-06-14 12:37:59,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 100 transitions, 1056 flow [2024-06-14 12:37:59,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 100 transitions, 992 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:37:59,503 INFO L231 Difference]: Finished difference. Result has 112 places, 87 transitions, 803 flow [2024-06-14 12:37:59,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=112, PETRI_TRANSITIONS=87} [2024-06-14 12:37:59,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-14 12:37:59,504 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 87 transitions, 803 flow [2024-06-14 12:37:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:37:59,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:37:59,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:37:59,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:37:59,505 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:37:59,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:37:59,505 INFO L85 PathProgramCache]: Analyzing trace with hash 97816720, now seen corresponding path program 3 times [2024-06-14 12:37:59,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:37:59,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292227195] [2024-06-14 12:37:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:37:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:37:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:00,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:00,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292227195] [2024-06-14 12:38:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292227195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:00,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993758999] [2024-06-14 12:38:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 87 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:00,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:00,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:00,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:00,586 INFO L124 PetriNetUnfolderBase]: 235/426 cut-off events. [2024-06-14 12:38:00,587 INFO L125 PetriNetUnfolderBase]: For 9284/9284 co-relation queries the response was YES. [2024-06-14 12:38:00,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 426 events. 235/426 cut-off events. For 9284/9284 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1652 event pairs, 33 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 2437. Up to 366 conditions per place. [2024-06-14 12:38:00,591 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 83 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-14 12:38:00,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 1055 flow [2024-06-14 12:38:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:38:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:38:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 12:38:00,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-14 12:38:00,594 INFO L175 Difference]: Start difference. First operand has 112 places, 87 transitions, 803 flow. Second operand 8 states and 86 transitions. [2024-06-14 12:38:00,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 1055 flow [2024-06-14 12:38:00,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 1018 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:38:00,614 INFO L231 Difference]: Finished difference. Result has 114 places, 88 transitions, 822 flow [2024-06-14 12:38:00,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=114, PETRI_TRANSITIONS=88} [2024-06-14 12:38:00,614 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-14 12:38:00,615 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 88 transitions, 822 flow [2024-06-14 12:38:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:38:00,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:00,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1240827672, now seen corresponding path program 2 times [2024-06-14 12:38:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415346207] [2024-06-14 12:38:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415346207] [2024-06-14 12:38:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415346207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100947776] [2024-06-14 12:38:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:01,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:01,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 88 transitions, 822 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:01,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:01,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:01,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:01,656 INFO L124 PetriNetUnfolderBase]: 275/506 cut-off events. [2024-06-14 12:38:01,656 INFO L125 PetriNetUnfolderBase]: For 15336/15336 co-relation queries the response was YES. [2024-06-14 12:38:01,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 506 events. 275/506 cut-off events. For 15336/15336 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2070 event pairs, 46 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 3113. Up to 372 conditions per place. [2024-06-14 12:38:01,665 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 89 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-14 12:38:01,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 110 transitions, 1262 flow [2024-06-14 12:38:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:38:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 12:38:01,666 INFO L175 Difference]: Start difference. First operand has 114 places, 88 transitions, 822 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:38:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 110 transitions, 1262 flow [2024-06-14 12:38:01,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 110 transitions, 1216 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:38:01,685 INFO L231 Difference]: Finished difference. Result has 118 places, 90 transitions, 860 flow [2024-06-14 12:38:01,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=860, PETRI_PLACES=118, PETRI_TRANSITIONS=90} [2024-06-14 12:38:01,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-14 12:38:01,686 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 90 transitions, 860 flow [2024-06-14 12:38:01,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:01,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:01,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:38:01,687 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:01,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:01,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1241124342, now seen corresponding path program 3 times [2024-06-14 12:38:01,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:01,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648141376] [2024-06-14 12:38:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:01,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:02,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:02,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648141376] [2024-06-14 12:38:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648141376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:02,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370765406] [2024-06-14 12:38:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:02,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:02,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 90 transitions, 860 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:02,657 INFO L124 PetriNetUnfolderBase]: 282/519 cut-off events. [2024-06-14 12:38:02,657 INFO L125 PetriNetUnfolderBase]: For 16572/16572 co-relation queries the response was YES. [2024-06-14 12:38:02,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 519 events. 282/519 cut-off events. For 16572/16572 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2180 event pairs, 44 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 3219. Up to 469 conditions per place. [2024-06-14 12:38:02,661 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-14 12:38:02,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 107 transitions, 1207 flow [2024-06-14 12:38:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 12:38:02,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:38:02,662 INFO L175 Difference]: Start difference. First operand has 118 places, 90 transitions, 860 flow. Second operand 10 states and 100 transitions. [2024-06-14 12:38:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 107 transitions, 1207 flow [2024-06-14 12:38:02,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 107 transitions, 1152 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 12:38:02,681 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 892 flow [2024-06-14 12:38:02,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=892, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2024-06-14 12:38:02,682 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-14 12:38:02,682 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 892 flow [2024-06-14 12:38:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:02,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:02,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:02,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:38:02,683 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:02,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash -729662234, now seen corresponding path program 1 times [2024-06-14 12:38:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414329166] [2024-06-14 12:38:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414329166] [2024-06-14 12:38:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414329166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:03,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994247622] [2024-06-14 12:38:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:03,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:03,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:03,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:03,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:03,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:03,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:03,669 INFO L124 PetriNetUnfolderBase]: 278/513 cut-off events. [2024-06-14 12:38:03,670 INFO L125 PetriNetUnfolderBase]: For 16123/16123 co-relation queries the response was YES. [2024-06-14 12:38:03,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 513 events. 278/513 cut-off events. For 16123/16123 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2129 event pairs, 52 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3123. Up to 481 conditions per place. [2024-06-14 12:38:03,674 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 88 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-06-14 12:38:03,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 104 transitions, 1124 flow [2024-06-14 12:38:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:03,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-14 12:38:03,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-14 12:38:03,675 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 892 flow. Second operand 9 states and 88 transitions. [2024-06-14 12:38:03,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 104 transitions, 1124 flow [2024-06-14 12:38:03,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 104 transitions, 1068 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:03,696 INFO L231 Difference]: Finished difference. Result has 125 places, 93 transitions, 869 flow [2024-06-14 12:38:03,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=125, PETRI_TRANSITIONS=93} [2024-06-14 12:38:03,696 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 12:38:03,696 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 93 transitions, 869 flow [2024-06-14 12:38:03,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:03,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:03,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:38:03,697 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:03,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 484417662, now seen corresponding path program 4 times [2024-06-14 12:38:03,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:03,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111357483] [2024-06-14 12:38:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:03,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111357483] [2024-06-14 12:38:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111357483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307379963] [2024-06-14 12:38:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:04,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:04,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 93 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:04,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:04,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:04,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:04,682 INFO L124 PetriNetUnfolderBase]: 275/509 cut-off events. [2024-06-14 12:38:04,682 INFO L125 PetriNetUnfolderBase]: For 15980/15984 co-relation queries the response was YES. [2024-06-14 12:38:04,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 509 events. 275/509 cut-off events. For 15980/15984 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2121 event pairs, 59 based on Foata normal form. 6/514 useless extension candidates. Maximal degree in co-relation 3020. Up to 460 conditions per place. [2024-06-14 12:38:04,686 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 20 changer transitions 0/104 dead transitions. [2024-06-14 12:38:04,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 104 transitions, 1103 flow [2024-06-14 12:38:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 12:38:04,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:38:04,687 INFO L175 Difference]: Start difference. First operand has 125 places, 93 transitions, 869 flow. Second operand 9 states and 90 transitions. [2024-06-14 12:38:04,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 104 transitions, 1103 flow [2024-06-14 12:38:04,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 104 transitions, 1065 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:38:04,712 INFO L231 Difference]: Finished difference. Result has 127 places, 94 transitions, 888 flow [2024-06-14 12:38:04,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=127, PETRI_TRANSITIONS=94} [2024-06-14 12:38:04,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-14 12:38:04,713 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 94 transitions, 888 flow [2024-06-14 12:38:04,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:04,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:04,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:04,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:38:04,713 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:04,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash -957741324, now seen corresponding path program 4 times [2024-06-14 12:38:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334600776] [2024-06-14 12:38:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334600776] [2024-06-14 12:38:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334600776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032362736] [2024-06-14 12:38:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:05,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:05,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:05,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:05,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 94 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:05,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:05,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:05,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:05,613 INFO L124 PetriNetUnfolderBase]: 272/504 cut-off events. [2024-06-14 12:38:05,613 INFO L125 PetriNetUnfolderBase]: For 15827/15831 co-relation queries the response was YES. [2024-06-14 12:38:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 504 events. 272/504 cut-off events. For 15827/15831 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2096 event pairs, 60 based on Foata normal form. 3/506 useless extension candidates. Maximal degree in co-relation 2966. Up to 431 conditions per place. [2024-06-14 12:38:05,616 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-14 12:38:05,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 1122 flow [2024-06-14 12:38:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:38:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:38:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 12:38:05,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 12:38:05,644 INFO L175 Difference]: Start difference. First operand has 127 places, 94 transitions, 888 flow. Second operand 8 states and 85 transitions. [2024-06-14 12:38:05,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 1122 flow [2024-06-14 12:38:05,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 1015 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:38:05,672 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 827 flow [2024-06-14 12:38:05,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2024-06-14 12:38:05,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 12:38:05,673 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 827 flow [2024-06-14 12:38:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:05,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:05,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:05,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:38:05,674 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:05,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash -729655476, now seen corresponding path program 5 times [2024-06-14 12:38:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093616163] [2024-06-14 12:38:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093616163] [2024-06-14 12:38:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093616163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072805407] [2024-06-14 12:38:06,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:06,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:06,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:06,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:06,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:06,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:06,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:06,638 INFO L124 PetriNetUnfolderBase]: 256/475 cut-off events. [2024-06-14 12:38:06,639 INFO L125 PetriNetUnfolderBase]: For 15173/15173 co-relation queries the response was YES. [2024-06-14 12:38:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 475 events. 256/475 cut-off events. For 15173/15173 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1936 event pairs, 36 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 2366. Up to 392 conditions per place. [2024-06-14 12:38:06,642 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 87 selfloop transitions, 13 changer transitions 8/110 dead transitions. [2024-06-14 12:38:06,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 110 transitions, 1099 flow [2024-06-14 12:38:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:38:06,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-14 12:38:06,643 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 827 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:38:06,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 110 transitions, 1099 flow [2024-06-14 12:38:06,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 110 transitions, 997 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:06,662 INFO L231 Difference]: Finished difference. Result has 125 places, 91 transitions, 731 flow [2024-06-14 12:38:06,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=125, PETRI_TRANSITIONS=91} [2024-06-14 12:38:06,663 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 12:38:06,663 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 91 transitions, 731 flow [2024-06-14 12:38:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:06,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:06,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:06,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:38:06,663 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:06,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -630272820, now seen corresponding path program 1 times [2024-06-14 12:38:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:06,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139484295] [2024-06-14 12:38:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:07,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139484295] [2024-06-14 12:38:07,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139484295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:07,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:07,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:07,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384290687] [2024-06-14 12:38:07,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:07,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:07,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 91 transitions, 731 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:07,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:07,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:07,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:07,622 INFO L124 PetriNetUnfolderBase]: 234/433 cut-off events. [2024-06-14 12:38:07,622 INFO L125 PetriNetUnfolderBase]: For 9372/9372 co-relation queries the response was YES. [2024-06-14 12:38:07,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 433 events. 234/433 cut-off events. For 9372/9372 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1742 event pairs, 19 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2126. Up to 363 conditions per place. [2024-06-14 12:38:07,625 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 96 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2024-06-14 12:38:07,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 110 transitions, 1007 flow [2024-06-14 12:38:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 12:38:07,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-14 12:38:07,627 INFO L175 Difference]: Start difference. First operand has 125 places, 91 transitions, 731 flow. Second operand 9 states and 92 transitions. [2024-06-14 12:38:07,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 110 transitions, 1007 flow [2024-06-14 12:38:07,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 932 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:38:07,642 INFO L231 Difference]: Finished difference. Result has 121 places, 92 transitions, 704 flow [2024-06-14 12:38:07,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=121, PETRI_TRANSITIONS=92} [2024-06-14 12:38:07,643 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-14 12:38:07,643 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 92 transitions, 704 flow [2024-06-14 12:38:07,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:07,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:07,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:07,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:38:07,644 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:07,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1920724244, now seen corresponding path program 2 times [2024-06-14 12:38:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761742540] [2024-06-14 12:38:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:07,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:08,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761742540] [2024-06-14 12:38:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761742540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:08,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:08,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:08,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308217999] [2024-06-14 12:38:08,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:08,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:08,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 92 transitions, 704 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:08,670 INFO L124 PetriNetUnfolderBase]: 245/454 cut-off events. [2024-06-14 12:38:08,671 INFO L125 PetriNetUnfolderBase]: For 10807/10807 co-relation queries the response was YES. [2024-06-14 12:38:08,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 454 events. 245/454 cut-off events. For 10807/10807 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1877 event pairs, 31 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2288. Up to 371 conditions per place. [2024-06-14 12:38:08,674 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 93 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-14 12:38:08,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 113 transitions, 1084 flow [2024-06-14 12:38:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:38:08,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-14 12:38:08,675 INFO L175 Difference]: Start difference. First operand has 121 places, 92 transitions, 704 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:38:08,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 113 transitions, 1084 flow [2024-06-14 12:38:08,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 1046 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:08,692 INFO L231 Difference]: Finished difference. Result has 123 places, 94 transitions, 748 flow [2024-06-14 12:38:08,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=748, PETRI_PLACES=123, PETRI_TRANSITIONS=94} [2024-06-14 12:38:08,693 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-14 12:38:08,693 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 94 transitions, 748 flow [2024-06-14 12:38:08,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:08,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:08,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:08,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:38:08,694 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:08,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash -545278260, now seen corresponding path program 3 times [2024-06-14 12:38:08,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:08,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924765959] [2024-06-14 12:38:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:08,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924765959] [2024-06-14 12:38:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924765959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:09,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:09,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541835470] [2024-06-14 12:38:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:09,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:09,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:09,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:09,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 94 transitions, 748 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:09,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:09,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:09,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:09,708 INFO L124 PetriNetUnfolderBase]: 242/449 cut-off events. [2024-06-14 12:38:09,709 INFO L125 PetriNetUnfolderBase]: For 10344/10344 co-relation queries the response was YES. [2024-06-14 12:38:09,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 449 events. 242/449 cut-off events. For 10344/10344 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1855 event pairs, 30 based on Foata normal form. 2/450 useless extension candidates. Maximal degree in co-relation 2196. Up to 385 conditions per place. [2024-06-14 12:38:09,712 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 92 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2024-06-14 12:38:09,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 112 transitions, 1014 flow [2024-06-14 12:38:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:38:09,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-14 12:38:09,729 INFO L175 Difference]: Start difference. First operand has 123 places, 94 transitions, 748 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:38:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 112 transitions, 1014 flow [2024-06-14 12:38:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 112 transitions, 958 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 12:38:09,757 INFO L231 Difference]: Finished difference. Result has 127 places, 94 transitions, 733 flow [2024-06-14 12:38:09,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=127, PETRI_TRANSITIONS=94} [2024-06-14 12:38:09,767 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-14 12:38:09,767 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 94 transitions, 733 flow [2024-06-14 12:38:09,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:09,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:09,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:09,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:38:09,767 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:09,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2007569876, now seen corresponding path program 1 times [2024-06-14 12:38:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097475705] [2024-06-14 12:38:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:10,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097475705] [2024-06-14 12:38:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097475705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:10,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:10,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:10,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236349207] [2024-06-14 12:38:10,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:10,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:10,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:10,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:10,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:10,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 94 transitions, 733 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:10,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:10,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:10,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:10,849 INFO L124 PetriNetUnfolderBase]: 268/503 cut-off events. [2024-06-14 12:38:10,849 INFO L125 PetriNetUnfolderBase]: For 16246/16246 co-relation queries the response was YES. [2024-06-14 12:38:10,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 503 events. 268/503 cut-off events. For 16246/16246 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2190 event pairs, 34 based on Foata normal form. 10/512 useless extension candidates. Maximal degree in co-relation 2343. Up to 397 conditions per place. [2024-06-14 12:38:10,852 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 96 selfloop transitions, 14 changer transitions 9/121 dead transitions. [2024-06-14 12:38:10,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 121 transitions, 1066 flow [2024-06-14 12:38:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:38:10,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-14 12:38:10,854 INFO L175 Difference]: Start difference. First operand has 127 places, 94 transitions, 733 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:38:10,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 121 transitions, 1066 flow [2024-06-14 12:38:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 121 transitions, 1025 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 12:38:10,877 INFO L231 Difference]: Finished difference. Result has 130 places, 94 transitions, 725 flow [2024-06-14 12:38:10,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=725, PETRI_PLACES=130, PETRI_TRANSITIONS=94} [2024-06-14 12:38:10,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-14 12:38:10,877 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 94 transitions, 725 flow [2024-06-14 12:38:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:10,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:10,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:10,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:38:10,878 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:10,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1292193040, now seen corresponding path program 2 times [2024-06-14 12:38:10,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:10,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344583394] [2024-06-14 12:38:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:10,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:11,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:11,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344583394] [2024-06-14 12:38:11,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344583394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:11,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:11,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777920988] [2024-06-14 12:38:11,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:11,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:11,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 94 transitions, 725 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:11,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:11,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:11,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:11,797 INFO L124 PetriNetUnfolderBase]: 262/497 cut-off events. [2024-06-14 12:38:11,797 INFO L125 PetriNetUnfolderBase]: For 18720/18720 co-relation queries the response was YES. [2024-06-14 12:38:11,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 497 events. 262/497 cut-off events. For 18720/18720 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2153 event pairs, 34 based on Foata normal form. 12/508 useless extension candidates. Maximal degree in co-relation 2340. Up to 344 conditions per place. [2024-06-14 12:38:11,801 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 81 selfloop transitions, 25 changer transitions 7/115 dead transitions. [2024-06-14 12:38:11,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 115 transitions, 1039 flow [2024-06-14 12:38:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 12:38:11,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-14 12:38:11,809 INFO L175 Difference]: Start difference. First operand has 130 places, 94 transitions, 725 flow. Second operand 9 states and 102 transitions. [2024-06-14 12:38:11,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 115 transitions, 1039 flow [2024-06-14 12:38:11,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 115 transitions, 1007 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:38:11,833 INFO L231 Difference]: Finished difference. Result has 130 places, 92 transitions, 749 flow [2024-06-14 12:38:11,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=749, PETRI_PLACES=130, PETRI_TRANSITIONS=92} [2024-06-14 12:38:11,834 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-14 12:38:11,834 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 92 transitions, 749 flow [2024-06-14 12:38:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:11,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:11,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:38:11,835 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:11,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1256922634, now seen corresponding path program 3 times [2024-06-14 12:38:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324519834] [2024-06-14 12:38:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324519834] [2024-06-14 12:38:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324519834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:12,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177586080] [2024-06-14 12:38:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:12,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:12,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 92 transitions, 749 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:12,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:12,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:12,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:12,684 INFO L124 PetriNetUnfolderBase]: 286/549 cut-off events. [2024-06-14 12:38:12,684 INFO L125 PetriNetUnfolderBase]: For 24980/24980 co-relation queries the response was YES. [2024-06-14 12:38:12,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 549 events. 286/549 cut-off events. For 24980/24980 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2454 event pairs, 50 based on Foata normal form. 8/556 useless extension candidates. Maximal degree in co-relation 3018. Up to 302 conditions per place. [2024-06-14 12:38:12,687 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 86 selfloop transitions, 21 changer transitions 8/117 dead transitions. [2024-06-14 12:38:12,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 1165 flow [2024-06-14 12:38:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:38:12,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-14 12:38:12,689 INFO L175 Difference]: Start difference. First operand has 130 places, 92 transitions, 749 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:38:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 117 transitions, 1165 flow [2024-06-14 12:38:12,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 117 transitions, 1059 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 12:38:12,724 INFO L231 Difference]: Finished difference. Result has 129 places, 89 transitions, 670 flow [2024-06-14 12:38:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=129, PETRI_TRANSITIONS=89} [2024-06-14 12:38:12,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-14 12:38:12,727 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 89 transitions, 670 flow [2024-06-14 12:38:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:12,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:12,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:12,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:38:12,728 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:12,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1291991230, now seen corresponding path program 4 times [2024-06-14 12:38:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:12,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761937564] [2024-06-14 12:38:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:13,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761937564] [2024-06-14 12:38:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761937564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419954092] [2024-06-14 12:38:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:13,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:13,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 89 transitions, 670 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:13,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:13,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:13,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:13,737 INFO L124 PetriNetUnfolderBase]: 269/518 cut-off events. [2024-06-14 12:38:13,737 INFO L125 PetriNetUnfolderBase]: For 24370/24370 co-relation queries the response was YES. [2024-06-14 12:38:13,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 518 events. 269/518 cut-off events. For 24370/24370 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2292 event pairs, 54 based on Foata normal form. 10/527 useless extension candidates. Maximal degree in co-relation 2654. Up to 380 conditions per place. [2024-06-14 12:38:13,740 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 76 selfloop transitions, 20 changer transitions 13/111 dead transitions. [2024-06-14 12:38:13,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 111 transitions, 960 flow [2024-06-14 12:38:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:38:13,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-14 12:38:13,742 INFO L175 Difference]: Start difference. First operand has 129 places, 89 transitions, 670 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:38:13,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 111 transitions, 960 flow [2024-06-14 12:38:13,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 111 transitions, 918 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:13,776 INFO L231 Difference]: Finished difference. Result has 127 places, 84 transitions, 634 flow [2024-06-14 12:38:13,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=634, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2024-06-14 12:38:13,776 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-14 12:38:13,777 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 634 flow [2024-06-14 12:38:13,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:13,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:13,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:13,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:38:13,777 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:13,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:13,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1286478748, now seen corresponding path program 4 times [2024-06-14 12:38:13,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708437730] [2024-06-14 12:38:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:14,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:14,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708437730] [2024-06-14 12:38:14,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708437730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:14,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:14,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:14,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528262939] [2024-06-14 12:38:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:14,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:14,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:14,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:14,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:14,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:14,675 INFO L124 PetriNetUnfolderBase]: 234/457 cut-off events. [2024-06-14 12:38:14,675 INFO L125 PetriNetUnfolderBase]: For 15739/15739 co-relation queries the response was YES. [2024-06-14 12:38:14,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 457 events. 234/457 cut-off events. For 15739/15739 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1964 event pairs, 51 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 2336. Up to 369 conditions per place. [2024-06-14 12:38:14,678 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 80 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2024-06-14 12:38:14,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 101 transitions, 894 flow [2024-06-14 12:38:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 12:38:14,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-14 12:38:14,679 INFO L175 Difference]: Start difference. First operand has 127 places, 84 transitions, 634 flow. Second operand 9 states and 94 transitions. [2024-06-14 12:38:14,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 101 transitions, 894 flow [2024-06-14 12:38:14,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 101 transitions, 850 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:14,704 INFO L231 Difference]: Finished difference. Result has 124 places, 85 transitions, 654 flow [2024-06-14 12:38:14,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=654, PETRI_PLACES=124, PETRI_TRANSITIONS=85} [2024-06-14 12:38:14,705 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-14 12:38:14,705 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 85 transitions, 654 flow [2024-06-14 12:38:14,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:14,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:14,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:14,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:38:14,706 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:14,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1286475028, now seen corresponding path program 5 times [2024-06-14 12:38:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:14,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509660746] [2024-06-14 12:38:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509660746] [2024-06-14 12:38:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509660746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:15,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:15,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233435366] [2024-06-14 12:38:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:15,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:15,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:15,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 85 transitions, 654 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:15,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:15,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:15,733 INFO L124 PetriNetUnfolderBase]: 238/465 cut-off events. [2024-06-14 12:38:15,733 INFO L125 PetriNetUnfolderBase]: For 15210/15210 co-relation queries the response was YES. [2024-06-14 12:38:15,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 465 events. 238/465 cut-off events. For 15210/15210 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2002 event pairs, 51 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2382. Up to 357 conditions per place. [2024-06-14 12:38:15,736 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 79 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 12:38:15,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 102 transitions, 916 flow [2024-06-14 12:38:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 12:38:15,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-14 12:38:15,758 INFO L175 Difference]: Start difference. First operand has 124 places, 85 transitions, 654 flow. Second operand 9 states and 95 transitions. [2024-06-14 12:38:15,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 102 transitions, 916 flow [2024-06-14 12:38:15,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 102 transitions, 862 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:15,783 INFO L231 Difference]: Finished difference. Result has 126 places, 86 transitions, 670 flow [2024-06-14 12:38:15,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=126, PETRI_TRANSITIONS=86} [2024-06-14 12:38:15,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-14 12:38:15,787 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 86 transitions, 670 flow [2024-06-14 12:38:15,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:15,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:15,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:15,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:38:15,787 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:15,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1643185322, now seen corresponding path program 5 times [2024-06-14 12:38:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056529673] [2024-06-14 12:38:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:15,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:16,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056529673] [2024-06-14 12:38:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056529673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454358486] [2024-06-14 12:38:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:16,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:16,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:16,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 86 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:16,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:16,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:16,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:16,695 INFO L124 PetriNetUnfolderBase]: 258/510 cut-off events. [2024-06-14 12:38:16,696 INFO L125 PetriNetUnfolderBase]: For 23637/23641 co-relation queries the response was YES. [2024-06-14 12:38:16,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 510 events. 258/510 cut-off events. For 23637/23641 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2297 event pairs, 65 based on Foata normal form. 13/522 useless extension candidates. Maximal degree in co-relation 2549. Up to 300 conditions per place. [2024-06-14 12:38:16,699 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 34 changer transitions 7/105 dead transitions. [2024-06-14 12:38:16,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 962 flow [2024-06-14 12:38:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:38:16,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-14 12:38:16,700 INFO L175 Difference]: Start difference. First operand has 126 places, 86 transitions, 670 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:38:16,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 962 flow [2024-06-14 12:38:16,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 105 transitions, 902 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:16,727 INFO L231 Difference]: Finished difference. Result has 128 places, 84 transitions, 688 flow [2024-06-14 12:38:16,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=688, PETRI_PLACES=128, PETRI_TRANSITIONS=84} [2024-06-14 12:38:16,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 12:38:16,727 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 84 transitions, 688 flow [2024-06-14 12:38:16,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:16,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:16,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:16,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:38:16,728 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:16,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 380516370, now seen corresponding path program 6 times [2024-06-14 12:38:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453434993] [2024-06-14 12:38:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:17,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453434993] [2024-06-14 12:38:17,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453434993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:17,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110396447] [2024-06-14 12:38:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:17,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:17,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:17,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 84 transitions, 688 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:17,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:17,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:17,620 INFO L124 PetriNetUnfolderBase]: 282/562 cut-off events. [2024-06-14 12:38:17,621 INFO L125 PetriNetUnfolderBase]: For 31157/31161 co-relation queries the response was YES. [2024-06-14 12:38:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 562 events. 282/562 cut-off events. For 31157/31161 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2603 event pairs, 73 based on Foata normal form. 9/570 useless extension candidates. Maximal degree in co-relation 3238. Up to 278 conditions per place. [2024-06-14 12:38:17,624 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 30 changer transitions 8/107 dead transitions. [2024-06-14 12:38:17,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 107 transitions, 1084 flow [2024-06-14 12:38:17,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:38:17,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-14 12:38:17,626 INFO L175 Difference]: Start difference. First operand has 128 places, 84 transitions, 688 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:38:17,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 107 transitions, 1084 flow [2024-06-14 12:38:17,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 107 transitions, 982 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:17,657 INFO L231 Difference]: Finished difference. Result has 128 places, 81 transitions, 627 flow [2024-06-14 12:38:17,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=627, PETRI_PLACES=128, PETRI_TRANSITIONS=81} [2024-06-14 12:38:17,658 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 12:38:17,658 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 81 transitions, 627 flow [2024-06-14 12:38:17,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:17,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:17,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:17,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:38:17,659 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:17,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1648899614, now seen corresponding path program 6 times [2024-06-14 12:38:17,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:17,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673933965] [2024-06-14 12:38:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:17,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:18,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:18,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673933965] [2024-06-14 12:38:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673933965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:18,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:18,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85926696] [2024-06-14 12:38:18,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:18,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:18,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:18,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 81 transitions, 627 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:18,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:18,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:18,634 INFO L124 PetriNetUnfolderBase]: 260/516 cut-off events. [2024-06-14 12:38:18,635 INFO L125 PetriNetUnfolderBase]: For 25891/25895 co-relation queries the response was YES. [2024-06-14 12:38:18,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 516 events. 260/516 cut-off events. For 25891/25895 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2329 event pairs, 76 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 2952. Up to 386 conditions per place. [2024-06-14 12:38:18,639 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 29 changer transitions 0/95 dead transitions. [2024-06-14 12:38:18,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 95 transitions, 873 flow [2024-06-14 12:38:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:38:18,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-14 12:38:18,662 INFO L175 Difference]: Start difference. First operand has 128 places, 81 transitions, 627 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:38:18,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 95 transitions, 873 flow [2024-06-14 12:38:18,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 95 transitions, 811 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:18,691 INFO L231 Difference]: Finished difference. Result has 125 places, 82 transitions, 655 flow [2024-06-14 12:38:18,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=655, PETRI_PLACES=125, PETRI_TRANSITIONS=82} [2024-06-14 12:38:18,692 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 12:38:18,692 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 82 transitions, 655 flow [2024-06-14 12:38:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:18,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:18,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:18,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:38:18,693 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:18,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1643387132, now seen corresponding path program 7 times [2024-06-14 12:38:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:18,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949037826] [2024-06-14 12:38:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:18,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:19,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949037826] [2024-06-14 12:38:19,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949037826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:19,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:19,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367800436] [2024-06-14 12:38:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:19,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:19,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:19,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:19,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 82 transitions, 655 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:19,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:19,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:19,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:19,815 INFO L124 PetriNetUnfolderBase]: 282/562 cut-off events. [2024-06-14 12:38:19,815 INFO L125 PetriNetUnfolderBase]: For 30995/30999 co-relation queries the response was YES. [2024-06-14 12:38:19,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3152 conditions, 562 events. 282/562 cut-off events. For 30995/30999 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2638 event pairs, 74 based on Foata normal form. 11/572 useless extension candidates. Maximal degree in co-relation 3090. Up to 357 conditions per place. [2024-06-14 12:38:19,818 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 61 selfloop transitions, 32 changer transitions 9/104 dead transitions. [2024-06-14 12:38:19,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 104 transitions, 941 flow [2024-06-14 12:38:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:38:19,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-14 12:38:19,827 INFO L175 Difference]: Start difference. First operand has 125 places, 82 transitions, 655 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:38:19,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 104 transitions, 941 flow [2024-06-14 12:38:19,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 104 transitions, 861 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:38:19,857 INFO L231 Difference]: Finished difference. Result has 128 places, 81 transitions, 637 flow [2024-06-14 12:38:19,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=637, PETRI_PLACES=128, PETRI_TRANSITIONS=81} [2024-06-14 12:38:19,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 12:38:19,858 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 81 transitions, 637 flow [2024-06-14 12:38:19,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:19,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:19,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:19,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:38:19,859 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:19,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1648749512, now seen corresponding path program 8 times [2024-06-14 12:38:19,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:19,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454712123] [2024-06-14 12:38:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:19,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454712123] [2024-06-14 12:38:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454712123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:20,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:20,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571392988] [2024-06-14 12:38:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:20,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:20,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 81 transitions, 637 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:20,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:20,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:20,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:20,847 INFO L124 PetriNetUnfolderBase]: 258/522 cut-off events. [2024-06-14 12:38:20,847 INFO L125 PetriNetUnfolderBase]: For 29033/29037 co-relation queries the response was YES. [2024-06-14 12:38:20,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2831 conditions, 522 events. 258/522 cut-off events. For 29033/29037 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2407 event pairs, 72 based on Foata normal form. 11/532 useless extension candidates. Maximal degree in co-relation 2768. Up to 325 conditions per place. [2024-06-14 12:38:20,865 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 33 changer transitions 9/100 dead transitions. [2024-06-14 12:38:20,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 100 transitions, 897 flow [2024-06-14 12:38:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 12:38:20,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-14 12:38:20,866 INFO L175 Difference]: Start difference. First operand has 128 places, 81 transitions, 637 flow. Second operand 10 states and 112 transitions. [2024-06-14 12:38:20,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 100 transitions, 897 flow [2024-06-14 12:38:20,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 100 transitions, 829 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:20,912 INFO L231 Difference]: Finished difference. Result has 128 places, 78 transitions, 619 flow [2024-06-14 12:38:20,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=619, PETRI_PLACES=128, PETRI_TRANSITIONS=78} [2024-06-14 12:38:20,912 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 12:38:20,912 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 78 transitions, 619 flow [2024-06-14 12:38:20,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:20,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:20,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:38:20,913 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:20,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:20,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1648903334, now seen corresponding path program 7 times [2024-06-14 12:38:20,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:20,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296677226] [2024-06-14 12:38:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:21,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296677226] [2024-06-14 12:38:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296677226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065776096] [2024-06-14 12:38:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:21,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:21,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:21,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 78 transitions, 619 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:21,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:21,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:21,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:22,016 INFO L124 PetriNetUnfolderBase]: 236/480 cut-off events. [2024-06-14 12:38:22,016 INFO L125 PetriNetUnfolderBase]: For 22768/22772 co-relation queries the response was YES. [2024-06-14 12:38:22,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 480 events. 236/480 cut-off events. For 22768/22772 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2144 event pairs, 74 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 2670. Up to 321 conditions per place. [2024-06-14 12:38:22,018 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 61 selfloop transitions, 30 changer transitions 0/93 dead transitions. [2024-06-14 12:38:22,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 93 transitions, 945 flow [2024-06-14 12:38:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:38:22,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-14 12:38:22,020 INFO L175 Difference]: Start difference. First operand has 128 places, 78 transitions, 619 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:38:22,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 93 transitions, 945 flow [2024-06-14 12:38:22,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 93 transitions, 869 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:38:22,050 INFO L231 Difference]: Finished difference. Result has 125 places, 79 transitions, 639 flow [2024-06-14 12:38:22,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=125, PETRI_TRANSITIONS=79} [2024-06-14 12:38:22,051 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 12:38:22,051 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 79 transitions, 639 flow [2024-06-14 12:38:22,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:22,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:22,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:22,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:38:22,052 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:22,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash 574240578, now seen corresponding path program 8 times [2024-06-14 12:38:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:22,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600147919] [2024-06-14 12:38:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:22,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:22,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600147919] [2024-06-14 12:38:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600147919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:22,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:22,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174087916] [2024-06-14 12:38:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:22,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:22,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:22,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:22,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 79 transitions, 639 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:22,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:22,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:22,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:23,137 INFO L124 PetriNetUnfolderBase]: 233/474 cut-off events. [2024-06-14 12:38:23,138 INFO L125 PetriNetUnfolderBase]: For 20117/20117 co-relation queries the response was YES. [2024-06-14 12:38:23,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 474 events. 233/474 cut-off events. For 20117/20117 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2112 event pairs, 65 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 2527. Up to 444 conditions per place. [2024-06-14 12:38:23,142 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-14 12:38:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 90 transitions, 841 flow [2024-06-14 12:38:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-14 12:38:23,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-14 12:38:23,143 INFO L175 Difference]: Start difference. First operand has 125 places, 79 transitions, 639 flow. Second operand 9 states and 86 transitions. [2024-06-14 12:38:23,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 90 transitions, 841 flow [2024-06-14 12:38:23,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 90 transitions, 721 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:38:23,189 INFO L231 Difference]: Finished difference. Result has 126 places, 79 transitions, 547 flow [2024-06-14 12:38:23,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=126, PETRI_TRANSITIONS=79} [2024-06-14 12:38:23,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-14 12:38:23,190 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 79 transitions, 547 flow [2024-06-14 12:38:23,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:23,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:23,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:23,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:38:23,191 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:23,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash 581598180, now seen corresponding path program 9 times [2024-06-14 12:38:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:23,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558821111] [2024-06-14 12:38:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:23,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558821111] [2024-06-14 12:38:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558821111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:23,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:23,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:23,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300031972] [2024-06-14 12:38:23,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:23,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:23,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:23,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:23,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 79 transitions, 547 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:23,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:23,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:23,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:24,132 INFO L124 PetriNetUnfolderBase]: 249/510 cut-off events. [2024-06-14 12:38:24,132 INFO L125 PetriNetUnfolderBase]: For 26913/26913 co-relation queries the response was YES. [2024-06-14 12:38:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 510 events. 249/510 cut-off events. For 26913/26913 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2353 event pairs, 69 based on Foata normal form. 10/519 useless extension candidates. Maximal degree in co-relation 2477. Up to 421 conditions per place. [2024-06-14 12:38:24,135 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 70 selfloop transitions, 14 changer transitions 8/94 dead transitions. [2024-06-14 12:38:24,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 94 transitions, 781 flow [2024-06-14 12:38:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 12:38:24,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-14 12:38:24,136 INFO L175 Difference]: Start difference. First operand has 126 places, 79 transitions, 547 flow. Second operand 9 states and 93 transitions. [2024-06-14 12:38:24,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 94 transitions, 781 flow [2024-06-14 12:38:24,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 94 transitions, 723 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:38:24,173 INFO L231 Difference]: Finished difference. Result has 126 places, 75 transitions, 499 flow [2024-06-14 12:38:24,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=126, PETRI_TRANSITIONS=75} [2024-06-14 12:38:24,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-14 12:38:24,174 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 75 transitions, 499 flow [2024-06-14 12:38:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:24,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:24,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:38:24,176 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:24,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1144482572, now seen corresponding path program 10 times [2024-06-14 12:38:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342434988] [2024-06-14 12:38:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342434988] [2024-06-14 12:38:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342434988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190852870] [2024-06-14 12:38:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:25,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:25,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 75 transitions, 499 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:25,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:25,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:25,307 INFO L124 PetriNetUnfolderBase]: 250/521 cut-off events. [2024-06-14 12:38:25,308 INFO L125 PetriNetUnfolderBase]: For 31576/31576 co-relation queries the response was YES. [2024-06-14 12:38:25,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 521 events. 250/521 cut-off events. For 31576/31576 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2425 event pairs, 78 based on Foata normal form. 8/528 useless extension candidates. Maximal degree in co-relation 2711. Up to 397 conditions per place. [2024-06-14 12:38:25,311 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 71 selfloop transitions, 9 changer transitions 11/93 dead transitions. [2024-06-14 12:38:25,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 93 transitions, 821 flow [2024-06-14 12:38:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:38:25,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-14 12:38:25,312 INFO L175 Difference]: Start difference. First operand has 126 places, 75 transitions, 499 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:38:25,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 93 transitions, 821 flow [2024-06-14 12:38:25,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 93 transitions, 778 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:38:25,359 INFO L231 Difference]: Finished difference. Result has 124 places, 69 transitions, 448 flow [2024-06-14 12:38:25,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=124, PETRI_TRANSITIONS=69} [2024-06-14 12:38:25,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-14 12:38:25,359 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 69 transitions, 448 flow [2024-06-14 12:38:25,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:25,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:25,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:25,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:38:25,360 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:25,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash -878785292, now seen corresponding path program 11 times [2024-06-14 12:38:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:25,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434626316] [2024-06-14 12:38:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434626316] [2024-06-14 12:38:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434626316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:26,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:26,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877043736] [2024-06-14 12:38:26,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:26,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:26,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:26,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 69 transitions, 448 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:26,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:26,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:26,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:26,343 INFO L124 PetriNetUnfolderBase]: 222/469 cut-off events. [2024-06-14 12:38:26,343 INFO L125 PetriNetUnfolderBase]: For 28052/28052 co-relation queries the response was YES. [2024-06-14 12:38:26,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 469 events. 222/469 cut-off events. For 28052/28052 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2136 event pairs, 68 based on Foata normal form. 8/476 useless extension candidates. Maximal degree in co-relation 2347. Up to 353 conditions per place. [2024-06-14 12:38:26,345 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 8 changer transitions 11/88 dead transitions. [2024-06-14 12:38:26,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 88 transitions, 752 flow [2024-06-14 12:38:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 12:38:26,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-14 12:38:26,346 INFO L175 Difference]: Start difference. First operand has 124 places, 69 transitions, 448 flow. Second operand 10 states and 101 transitions. [2024-06-14 12:38:26,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 88 transitions, 752 flow [2024-06-14 12:38:26,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 88 transitions, 719 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:38:26,371 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 409 flow [2024-06-14 12:38:26,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=409, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-14 12:38:26,372 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-14 12:38:26,372 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 409 flow [2024-06-14 12:38:26,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:26,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:26,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:38:26,372 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:26,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash 273447535, now seen corresponding path program 1 times [2024-06-14 12:38:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:26,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693011611] [2024-06-14 12:38:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:27,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693011611] [2024-06-14 12:38:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693011611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:27,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:27,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969779039] [2024-06-14 12:38:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:27,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:27,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:27,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:27,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:27,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 409 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:27,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:27,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:27,287 INFO L124 PetriNetUnfolderBase]: 207/440 cut-off events. [2024-06-14 12:38:27,287 INFO L125 PetriNetUnfolderBase]: For 22810/22810 co-relation queries the response was YES. [2024-06-14 12:38:27,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 440 events. 207/440 cut-off events. For 22810/22810 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1959 event pairs, 64 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 2183. Up to 346 conditions per place. [2024-06-14 12:38:27,289 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 56 selfloop transitions, 7 changer transitions 17/82 dead transitions. [2024-06-14 12:38:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 82 transitions, 613 flow [2024-06-14 12:38:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 12:38:27,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-14 12:38:27,290 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 409 flow. Second operand 9 states and 91 transitions. [2024-06-14 12:38:27,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 82 transitions, 613 flow [2024-06-14 12:38:27,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 82 transitions, 571 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:38:27,307 INFO L231 Difference]: Finished difference. Result has 113 places, 60 transitions, 366 flow [2024-06-14 12:38:27,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=366, PETRI_PLACES=113, PETRI_TRANSITIONS=60} [2024-06-14 12:38:27,308 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-14 12:38:27,308 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 60 transitions, 366 flow [2024-06-14 12:38:27,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:27,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:27,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:38:27,308 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1994472431, now seen corresponding path program 2 times [2024-06-14 12:38:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757660238] [2024-06-14 12:38:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757660238] [2024-06-14 12:38:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757660238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241888901] [2024-06-14 12:38:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:28,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:28,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 60 transitions, 366 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:28,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:28,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:28,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:28,233 INFO L124 PetriNetUnfolderBase]: 187/402 cut-off events. [2024-06-14 12:38:28,233 INFO L125 PetriNetUnfolderBase]: For 18357/18357 co-relation queries the response was YES. [2024-06-14 12:38:28,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 402 events. 187/402 cut-off events. For 18357/18357 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1741 event pairs, 51 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 1930. Up to 238 conditions per place. [2024-06-14 12:38:28,235 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 45 selfloop transitions, 15 changer transitions 13/75 dead transitions. [2024-06-14 12:38:28,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 75 transitions, 548 flow [2024-06-14 12:38:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 12:38:28,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 12:38:28,243 INFO L175 Difference]: Start difference. First operand has 113 places, 60 transitions, 366 flow. Second operand 9 states and 90 transitions. [2024-06-14 12:38:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 75 transitions, 548 flow [2024-06-14 12:38:28,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 526 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:38:28,260 INFO L231 Difference]: Finished difference. Result has 107 places, 53 transitions, 340 flow [2024-06-14 12:38:28,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=340, PETRI_PLACES=107, PETRI_TRANSITIONS=53} [2024-06-14 12:38:28,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-14 12:38:28,260 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 53 transitions, 340 flow [2024-06-14 12:38:28,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:28,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:28,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:38:28,261 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:28,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1994587751, now seen corresponding path program 3 times [2024-06-14 12:38:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372403142] [2024-06-14 12:38:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:29,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372403142] [2024-06-14 12:38:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372403142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:29,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:38:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976017931] [2024-06-14 12:38:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:38:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:29,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:38:29,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:38:29,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:29,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 53 transitions, 340 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:29,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:29,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:29,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:29,352 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-14 12:38:29,352 INFO L125 PetriNetUnfolderBase]: For 12325/12325 co-relation queries the response was YES. [2024-06-14 12:38:29,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 331 events. 150/331 cut-off events. For 12325/12325 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1345 event pairs, 43 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1510. Up to 189 conditions per place. [2024-06-14 12:38:29,354 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 3 changer transitions 34/68 dead transitions. [2024-06-14 12:38:29,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 510 flow [2024-06-14 12:38:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 12:38:29,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-14 12:38:29,356 INFO L175 Difference]: Start difference. First operand has 107 places, 53 transitions, 340 flow. Second operand 9 states and 89 transitions. [2024-06-14 12:38:29,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 510 flow [2024-06-14 12:38:29,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 68 transitions, 470 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:38:29,371 INFO L231 Difference]: Finished difference. Result has 99 places, 33 transitions, 186 flow [2024-06-14 12:38:29,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=99, PETRI_TRANSITIONS=33} [2024-06-14 12:38:29,371 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-14 12:38:29,371 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 33 transitions, 186 flow [2024-06-14 12:38:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-14 12:38:29,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:29,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:29,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:38:29,372 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:29,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1776279057, now seen corresponding path program 4 times [2024-06-14 12:38:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766268960] [2024-06-14 12:38:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:30,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:30,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766268960] [2024-06-14 12:38:30,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766268960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:30,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344072945] [2024-06-14 12:38:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:30,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:30,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 33 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:30,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:30,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:30,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:30,611 INFO L124 PetriNetUnfolderBase]: 81/185 cut-off events. [2024-06-14 12:38:30,611 INFO L125 PetriNetUnfolderBase]: For 7002/7002 co-relation queries the response was YES. [2024-06-14 12:38:30,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 185 events. 81/185 cut-off events. For 7002/7002 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 608 event pairs, 28 based on Foata normal form. 6/191 useless extension candidates. Maximal degree in co-relation 805. Up to 95 conditions per place. [2024-06-14 12:38:30,612 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 20 selfloop transitions, 7 changer transitions 15/44 dead transitions. [2024-06-14 12:38:30,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 44 transitions, 296 flow [2024-06-14 12:38:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-06-14 12:38:30,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-14 12:38:30,613 INFO L175 Difference]: Start difference. First operand has 99 places, 33 transitions, 186 flow. Second operand 9 states and 81 transitions. [2024-06-14 12:38:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 44 transitions, 296 flow [2024-06-14 12:38:30,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 44 transitions, 258 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-14 12:38:30,617 INFO L231 Difference]: Finished difference. Result has 67 places, 26 transitions, 133 flow [2024-06-14 12:38:30,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=26} [2024-06-14 12:38:30,618 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-14 12:38:30,618 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 26 transitions, 133 flow [2024-06-14 12:38:30,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:30,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:30,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:30,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:38:30,618 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:30,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1266382509, now seen corresponding path program 5 times [2024-06-14 12:38:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:30,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153414702] [2024-06-14 12:38:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153414702] [2024-06-14 12:38:31,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153414702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:31,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:31,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:38:31,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692179491] [2024-06-14 12:38:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:38:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:38:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:38:31,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:31,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 26 transitions, 133 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:31,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:31,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:31,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:31,758 INFO L124 PetriNetUnfolderBase]: 47/115 cut-off events. [2024-06-14 12:38:31,759 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-14 12:38:31,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 115 events. 47/115 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 388. Up to 38 conditions per place. [2024-06-14 12:38:31,760 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 18 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2024-06-14 12:38:31,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 38 transitions, 231 flow [2024-06-14 12:38:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:38:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:38:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 84 transitions. [2024-06-14 12:38:31,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-06-14 12:38:31,761 INFO L175 Difference]: Start difference. First operand has 67 places, 26 transitions, 133 flow. Second operand 10 states and 84 transitions. [2024-06-14 12:38:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 38 transitions, 231 flow [2024-06-14 12:38:31,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 38 transitions, 205 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:38:31,763 INFO L231 Difference]: Finished difference. Result has 57 places, 21 transitions, 100 flow [2024-06-14 12:38:31,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=21} [2024-06-14 12:38:31,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-14 12:38:31,763 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 21 transitions, 100 flow [2024-06-14 12:38:31,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:31,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:38:31,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:38:31,764 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:38:31,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:38:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1125891705, now seen corresponding path program 6 times [2024-06-14 12:38:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:38:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718482064] [2024-06-14 12:38:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:38:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:38:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:38:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:38:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:38:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718482064] [2024-06-14 12:38:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718482064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:38:32,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:38:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:38:32,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847378423] [2024-06-14 12:38:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:38:32,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:38:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:38:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:38:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:38:32,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 12:38:32,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 21 transitions, 100 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:32,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:38:32,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 12:38:32,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:38:32,994 INFO L124 PetriNetUnfolderBase]: 19/55 cut-off events. [2024-06-14 12:38:32,994 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-06-14 12:38:32,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 55 events. 19/55 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 150. Up to 24 conditions per place. [2024-06-14 12:38:32,995 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-14 12:38:32,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 26 transitions, 136 flow [2024-06-14 12:38:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:38:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:38:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2024-06-14 12:38:32,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25925925925925924 [2024-06-14 12:38:32,996 INFO L175 Difference]: Start difference. First operand has 57 places, 21 transitions, 100 flow. Second operand 9 states and 70 transitions. [2024-06-14 12:38:32,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 26 transitions, 136 flow [2024-06-14 12:38:32,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 108 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-14 12:38:32,997 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-14 12:38:32,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-14 12:38:32,998 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-14 12:38:32,998 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-14 12:38:32,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:38:33,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:38:33,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:38:33,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:38:33,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:38:33,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:38:33,002 INFO L445 BasicCegarLoop]: Path program histogram: [11, 8, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:38:33,005 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:38:33,005 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:38:33,009 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:38:33,009 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:38:33,010 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:38:33 BasicIcfg [2024-06-14 12:38:33,010 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:38:33,011 INFO L158 Benchmark]: Toolchain (without parser) took 59551.85ms. Allocated memory was 165.7MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 136.0MB in the beginning and 801.1MB in the end (delta: -665.0MB). Peak memory consumption was 182.3MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,011 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:38:33,011 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:38:33,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.25ms. Allocated memory is still 165.7MB. Free memory was 135.5MB in the beginning and 103.1MB in the end (delta: 32.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.19ms. Allocated memory is still 165.7MB. Free memory was 103.1MB in the beginning and 100.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,016 INFO L158 Benchmark]: Boogie Preprocessor took 84.11ms. Allocated memory is still 165.7MB. Free memory was 100.4MB in the beginning and 96.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,017 INFO L158 Benchmark]: RCFGBuilder took 835.75ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 132.9MB in the end (delta: -36.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,017 INFO L158 Benchmark]: TraceAbstraction took 57943.26ms. Allocated memory was 165.7MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 131.9MB in the beginning and 801.1MB in the end (delta: -669.1MB). Peak memory consumption was 178.9MB. Max. memory is 16.1GB. [2024-06-14 12:38:33,019 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.25ms. Allocated memory is still 165.7MB. Free memory was 135.5MB in the beginning and 103.1MB in the end (delta: 32.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.19ms. Allocated memory is still 165.7MB. Free memory was 103.1MB in the beginning and 100.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.11ms. Allocated memory is still 165.7MB. Free memory was 100.4MB in the beginning and 96.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 835.75ms. Allocated memory is still 165.7MB. Free memory was 96.8MB in the beginning and 132.9MB in the end (delta: -36.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 57943.26ms. Allocated memory was 165.7MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 131.9MB in the beginning and 801.1MB in the end (delta: -669.1MB). Peak memory consumption was 178.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 57.9s, OverallIterations: 61, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2903 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2456 mSDsluCounter, 1241 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1056 mSDsCounter, 580 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15298 IncrementalHoareTripleChecker+Invalid, 15878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 580 mSolverCounterUnsat, 185 mSDtfsCounter, 15298 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 560 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=892occurred in iteration=32, InterpolantAutomatonStates: 499, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.0s InterpolantComputationTime, 939 NumberOfCodeBlocks, 939 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 878 ConstructedInterpolants, 0 QuantifiedInterpolants, 36294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:38:33,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE