./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:44:33,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:44:33,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:44:33,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:44:33,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:44:33,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:44:33,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:44:33,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:44:33,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:44:33,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:44:33,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:44:33,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:44:33,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:44:33,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:44:33,847 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:44:33,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:44:33,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:44:33,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:44:33,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:44:33,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:44:33,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:44:33,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:44:33,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:44:33,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:44:33,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:44:33,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:44:33,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:44:33,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:44:33,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:44:33,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:44:33,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:44:33,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:44:33,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:44:33,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:44:33,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:44:33,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:44:33,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:44:33,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:44:33,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:44:33,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:44:33,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:44:33,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:44:33,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:44:33,857 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:44:34,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:44:34,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:44:34,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:44:34,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:44:34,078 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:44:34,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-27 19:44:35,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:44:35,270 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:44:35,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-27 19:44:35,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62254fd37/a80f489d2ee04417834d52e93d35922f/FLAG3a27b5441 [2024-06-27 19:44:35,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62254fd37/a80f489d2ee04417834d52e93d35922f [2024-06-27 19:44:35,300 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:44:35,300 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:44:35,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix000.oepc.yml/witness.yml [2024-06-27 19:44:35,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:44:35,399 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:44:35,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:44:35,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:44:35,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:44:35,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:44:35" (1/2) ... [2024-06-27 19:44:35,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaf3a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:44:35, skipping insertion in model container [2024-06-27 19:44:35,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:44:35" (1/2) ... [2024-06-27 19:44:35,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a97d939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:44:35, skipping insertion in model container [2024-06-27 19:44:35,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:44:35" (2/2) ... [2024-06-27 19:44:35,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaf3a5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:35, skipping insertion in model container [2024-06-27 19:44:35,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:44:35" (2/2) ... [2024-06-27 19:44:35,408 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:44:35,461 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:44:35,462 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:44:35,462 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 19:44:35,463 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:44:35,463 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 19:44:35,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:44:35,867 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:44:35,874 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:44:35,990 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:44:36,022 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:44:36,023 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36 WrapperNode [2024-06-27 19:44:36,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:44:36,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:44:36,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:44:36,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:44:36,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,094 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-27 19:44:36,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:44:36,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:44:36,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:44:36,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:44:36,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,135 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:44:36,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:44:36,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:44:36,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:44:36,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:44:36,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (1/1) ... [2024-06-27 19:44:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:44:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:44:36,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 19:44:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 19:44:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:44:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:44:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:44:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:44:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:44:36,203 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:44:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:44:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:44:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:44:36,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:44:36,204 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:44:36,300 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:44:36,302 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:44:36,523 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:44:36,523 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:44:36,665 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:44:36,665 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:44:36,667 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:44:36 BoogieIcfgContainer [2024-06-27 19:44:36,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:44:36,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:44:36,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:44:36,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:44:36,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:44:35" (1/4) ... [2024-06-27 19:44:36,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd3a437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:44:36, skipping insertion in model container [2024-06-27 19:44:36,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:44:35" (2/4) ... [2024-06-27 19:44:36,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd3a437 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:44:36, skipping insertion in model container [2024-06-27 19:44:36,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:44:36" (3/4) ... [2024-06-27 19:44:36,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd3a437 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:44:36, skipping insertion in model container [2024-06-27 19:44:36,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:44:36" (4/4) ... [2024-06-27 19:44:36,679 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-27 19:44:36,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:44:36,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:44:36,692 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:44:36,722 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:44:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 19:44:36,773 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 19:44:36,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:44:36,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:44:36,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 19:44:36,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 19:44:36,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:44:36,796 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;@2c31bb9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:44:36,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:44:36,800 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:44:36,800 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 19:44:36,800 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:44:36,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:36,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:44:36,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 368677949, now seen corresponding path program 1 times [2024-06-27 19:44:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022838398] [2024-06-27 19:44:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022838398] [2024-06-27 19:44:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022838398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:37,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:37,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:44:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364490345] [2024-06-27 19:44:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:37,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:44:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:44:37,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:44:37,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-27 19:44:37,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:37,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:37,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-27 19:44:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:37,766 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-27 19:44:37,766 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 19:44:37,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 309 events. 162/309 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-27 19:44:37,772 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 19:44:37,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-27 19:44:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:44:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:44:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-27 19:44:37,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-27 19:44:37,782 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-27 19:44:37,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-27 19:44:37,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:44:37,786 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 19:44:37,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 19:44:37,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 19:44:37,791 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 19:44:37,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:37,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:37,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:37,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:44:37,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:37,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:37,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2112218588, now seen corresponding path program 1 times [2024-06-27 19:44:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473766606] [2024-06-27 19:44:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:38,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:38,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473766606] [2024-06-27 19:44:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473766606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:44:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967813260] [2024-06-27 19:44:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:44:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:44:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:44:38,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-27 19:44:38,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:38,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:38,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-27 19:44:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:38,447 INFO L124 PetriNetUnfolderBase]: 159/306 cut-off events. [2024-06-27 19:44:38,447 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-27 19:44:38,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 306 events. 159/306 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1173 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-27 19:44:38,452 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 19:44:38,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-27 19:44:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:44:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:44:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-27 19:44:38,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-27 19:44:38,456 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-27 19:44:38,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-27 19:44:38,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:44:38,460 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 19:44:38,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 19:44:38,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 19:44:38,461 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 19:44:38,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:38,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:38,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:38,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:44:38,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:38,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1054267720, now seen corresponding path program 1 times [2024-06-27 19:44:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326381432] [2024-06-27 19:44:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:39,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326381432] [2024-06-27 19:44:39,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326381432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:39,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:39,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:44:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246664524] [2024-06-27 19:44:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:39,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:44:39,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:39,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:44:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:44:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-27 19:44:39,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:39,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:39,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-27 19:44:39,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:39,275 INFO L124 PetriNetUnfolderBase]: 153/300 cut-off events. [2024-06-27 19:44:39,275 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-27 19:44:39,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 300 events. 153/300 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1128 event pairs, 43 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 733. Up to 246 conditions per place. [2024-06-27 19:44:39,277 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 19:44:39,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 209 flow [2024-06-27 19:44:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:44:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:44:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-27 19:44:39,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-27 19:44:39,279 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 89 transitions. [2024-06-27 19:44:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 209 flow [2024-06-27 19:44:39,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:44:39,280 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-27 19:44:39,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 19:44:39,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-27 19:44:39,281 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-27 19:44:39,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:39,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:39,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:44:39,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:39,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash -905032760, now seen corresponding path program 1 times [2024-06-27 19:44:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86061707] [2024-06-27 19:44:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:39,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86061707] [2024-06-27 19:44:39,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86061707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:39,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:39,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:44:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044619820] [2024-06-27 19:44:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:44:39,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:44:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:44:39,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:39,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:39,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:39,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:39,914 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-27 19:44:39,914 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-27 19:44:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 379 events. 211/379 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 92 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1037. Up to 368 conditions per place. [2024-06-27 19:44:39,916 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-27 19:44:39,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 205 flow [2024-06-27 19:44:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:44:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:44:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-27 19:44:39,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 19:44:39,918 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 61 transitions. [2024-06-27 19:44:39,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 205 flow [2024-06-27 19:44:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:44:39,919 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-27 19:44:39,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-27 19:44:39,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 19:44:39,920 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-27 19:44:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:39,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:39,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:44:39,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:39,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1405231846, now seen corresponding path program 1 times [2024-06-27 19:44:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020495597] [2024-06-27 19:44:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020495597] [2024-06-27 19:44:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020495597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:41,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16376814] [2024-06-27 19:44:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:41,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:41,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 19:44:41,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:41,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:41,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 19:44:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:41,427 INFO L124 PetriNetUnfolderBase]: 190/354 cut-off events. [2024-06-27 19:44:41,428 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-27 19:44:41,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 354 events. 190/354 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1260 event pairs, 34 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1002. Up to 272 conditions per place. [2024-06-27 19:44:41,429 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-27 19:44:41,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 291 flow [2024-06-27 19:44:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 19:44:41,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:44:41,431 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 8 states and 124 transitions. [2024-06-27 19:44:41,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 291 flow [2024-06-27 19:44:41,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 280 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:44:41,432 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 162 flow [2024-06-27 19:44:41,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-27 19:44:41,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 19:44:41,433 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 162 flow [2024-06-27 19:44:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:41,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:41,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:44:41,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2008756451, now seen corresponding path program 1 times [2024-06-27 19:44:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:41,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929139615] [2024-06-27 19:44:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929139615] [2024-06-27 19:44:41,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929139615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:41,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:41,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:44:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524549044] [2024-06-27 19:44:41,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:44:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:44:41,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:44:41,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:41,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 162 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) [2024-06-27 19:44:41,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:41,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:41,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:42,136 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-27 19:44:42,136 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-27 19:44:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 362 events. 201/362 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1232 event pairs, 49 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1144. Up to 342 conditions per place. [2024-06-27 19:44:42,138 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-27 19:44:42,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 272 flow [2024-06-27 19:44:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:44:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:44:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 19:44:42,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 19:44:42,140 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 162 flow. Second operand 6 states and 71 transitions. [2024-06-27 19:44:42,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 272 flow [2024-06-27 19:44:42,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 248 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:44:42,142 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 171 flow [2024-06-27 19:44:42,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-27 19:44:42,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 19:44:42,143 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 171 flow [2024-06-27 19:44:42,143 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) [2024-06-27 19:44:42,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:42,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:44:42,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:42,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1294430037, now seen corresponding path program 1 times [2024-06-27 19:44:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289029175] [2024-06-27 19:44:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:42,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289029175] [2024-06-27 19:44:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289029175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:44:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339412771] [2024-06-27 19:44:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:42,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:44:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:44:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:44:42,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:42,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 171 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) [2024-06-27 19:44:42,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:42,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:42,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:42,772 INFO L124 PetriNetUnfolderBase]: 204/367 cut-off events. [2024-06-27 19:44:42,773 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-06-27 19:44:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 367 events. 204/367 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1257 event pairs, 49 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1211. Up to 340 conditions per place. [2024-06-27 19:44:42,775 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-27 19:44:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 319 flow [2024-06-27 19:44:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:44:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:44:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-27 19:44:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 19:44:42,776 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 171 flow. Second operand 6 states and 75 transitions. [2024-06-27 19:44:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 319 flow [2024-06-27 19:44:42,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 302 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:44:42,778 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 201 flow [2024-06-27 19:44:42,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 19:44:42,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-27 19:44:42,779 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 201 flow [2024-06-27 19:44:42,779 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) [2024-06-27 19:44:42,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:42,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:44:42,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:42,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1265593527, now seen corresponding path program 2 times [2024-06-27 19:44:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131178938] [2024-06-27 19:44:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:43,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131178938] [2024-06-27 19:44:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131178938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:44:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615115578] [2024-06-27 19:44:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:43,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:44:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:44:43,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:44:43,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:43,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 201 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) [2024-06-27 19:44:43,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:43,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:43,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:43,434 INFO L124 PetriNetUnfolderBase]: 202/364 cut-off events. [2024-06-27 19:44:43,434 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2024-06-27 19:44:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 364 events. 202/364 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1248 event pairs, 48 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1263. Up to 350 conditions per place. [2024-06-27 19:44:43,437 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-27 19:44:43,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 303 flow [2024-06-27 19:44:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:44:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:44:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 19:44:43,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:44:43,438 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 201 flow. Second operand 6 states and 69 transitions. [2024-06-27 19:44:43,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 303 flow [2024-06-27 19:44:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 291 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:44:43,440 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 210 flow [2024-06-27 19:44:43,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-27 19:44:43,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-27 19:44:43,441 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 210 flow [2024-06-27 19:44:43,441 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) [2024-06-27 19:44:43,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:43,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:43,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:44:43,441 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)] === [2024-06-27 19:44:43,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:43,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1502645367, now seen corresponding path program 1 times [2024-06-27 19:44:43,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:43,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984466437] [2024-06-27 19:44:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984466437] [2024-06-27 19:44:44,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984466437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:44,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:44,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166154286] [2024-06-27 19:44:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:44,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:44,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:44,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:44,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:44,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:44,303 INFO L124 PetriNetUnfolderBase]: 205/369 cut-off events. [2024-06-27 19:44:44,303 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-06-27 19:44:44,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 369 events. 205/369 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 48 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1329. Up to 325 conditions per place. [2024-06-27 19:44:44,305 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-27 19:44:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 392 flow [2024-06-27 19:44:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 19:44:44,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 19:44:44,306 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 210 flow. Second operand 7 states and 88 transitions. [2024-06-27 19:44:44,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 392 flow [2024-06-27 19:44:44,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 371 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 19:44:44,309 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 250 flow [2024-06-27 19:44:44,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 19:44:44,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-27 19:44:44,309 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 250 flow [2024-06-27 19:44:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:44,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:44,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:44,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:44:44,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:44,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1767734308, now seen corresponding path program 1 times [2024-06-27 19:44:44,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:44,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585100131] [2024-06-27 19:44:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:44,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585100131] [2024-06-27 19:44:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585100131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640725178] [2024-06-27 19:44:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:44,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:44,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:44,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:44,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:44,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:45,075 INFO L124 PetriNetUnfolderBase]: 224/400 cut-off events. [2024-06-27 19:44:45,076 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-27 19:44:45,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 400 events. 224/400 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1400 event pairs, 51 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 1523. Up to 346 conditions per place. [2024-06-27 19:44:45,078 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 15 changer transitions 0/65 dead transitions. [2024-06-27 19:44:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 454 flow [2024-06-27 19:44:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 19:44:45,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-27 19:44:45,080 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 250 flow. Second operand 7 states and 90 transitions. [2024-06-27 19:44:45,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 454 flow [2024-06-27 19:44:45,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 431 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:44:45,085 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 301 flow [2024-06-27 19:44:45,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-27 19:44:45,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-27 19:44:45,090 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 301 flow [2024-06-27 19:44:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:45,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:45,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:44:45,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:45,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1767734091, now seen corresponding path program 2 times [2024-06-27 19:44:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258630402] [2024-06-27 19:44:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:45,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258630402] [2024-06-27 19:44:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258630402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083705761] [2024-06-27 19:44:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:45,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:45,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:45,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:45,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:45,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:45,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:45,995 INFO L124 PetriNetUnfolderBase]: 227/405 cut-off events. [2024-06-27 19:44:45,996 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-06-27 19:44:45,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 405 events. 227/405 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1405 event pairs, 50 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1666. Up to 376 conditions per place. [2024-06-27 19:44:45,998 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-27 19:44:45,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 457 flow [2024-06-27 19:44:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 19:44:46,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-27 19:44:46,000 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 301 flow. Second operand 7 states and 83 transitions. [2024-06-27 19:44:46,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 457 flow [2024-06-27 19:44:46,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 446 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:44:46,003 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 337 flow [2024-06-27 19:44:46,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-27 19:44:46,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-27 19:44:46,004 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 337 flow [2024-06-27 19:44:46,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:46,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:46,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:44:46,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:46,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash -578692951, now seen corresponding path program 3 times [2024-06-27 19:44:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709418626] [2024-06-27 19:44:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:46,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709418626] [2024-06-27 19:44:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709418626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:46,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:46,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:46,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738652171] [2024-06-27 19:44:46,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:46,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:46,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:46,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:46,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:46,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:46,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:46,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:46,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:46,846 INFO L124 PetriNetUnfolderBase]: 225/402 cut-off events. [2024-06-27 19:44:46,846 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2024-06-27 19:44:46,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 402 events. 225/402 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1402 event pairs, 49 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1704. Up to 385 conditions per place. [2024-06-27 19:44:46,849 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-27 19:44:46,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 467 flow [2024-06-27 19:44:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:44:46,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-27 19:44:46,851 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 337 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:44:46,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 467 flow [2024-06-27 19:44:46,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 438 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:44:46,854 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 333 flow [2024-06-27 19:44:46,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-27 19:44:46,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 19:44:46,856 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 333 flow [2024-06-27 19:44:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:46,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:46,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:46,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:44:46,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:46,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1974387748, now seen corresponding path program 2 times [2024-06-27 19:44:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118770097] [2024-06-27 19:44:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118770097] [2024-06-27 19:44:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118770097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:47,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:47,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:47,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697657316] [2024-06-27 19:44:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:47,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:47,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:47,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:47,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:47,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:47,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:47,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:47,625 INFO L124 PetriNetUnfolderBase]: 234/417 cut-off events. [2024-06-27 19:44:47,625 INFO L125 PetriNetUnfolderBase]: For 3291/3291 co-relation queries the response was YES. [2024-06-27 19:44:47,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 417 events. 234/417 cut-off events. For 3291/3291 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1473 event pairs, 49 based on Foata normal form. 3/418 useless extension candidates. Maximal degree in co-relation 1787. Up to 377 conditions per place. [2024-06-27 19:44:47,628 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-27 19:44:47,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 529 flow [2024-06-27 19:44:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 19:44:47,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 19:44:47,629 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 333 flow. Second operand 7 states and 85 transitions. [2024-06-27 19:44:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 529 flow [2024-06-27 19:44:47,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 494 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:44:47,633 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 343 flow [2024-06-27 19:44:47,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-27 19:44:47,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 19:44:47,634 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 343 flow [2024-06-27 19:44:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:47,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:47,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:47,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:44:47,634 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1508366944, now seen corresponding path program 3 times [2024-06-27 19:44:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548190011] [2024-06-27 19:44:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:47,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548190011] [2024-06-27 19:44:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548190011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:48,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:48,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:44:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108256320] [2024-06-27 19:44:48,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:44:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:44:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:44:48,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:48,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:48,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:48,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:48,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:48,315 INFO L124 PetriNetUnfolderBase]: 228/408 cut-off events. [2024-06-27 19:44:48,315 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-06-27 19:44:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 408 events. 228/408 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1441 event pairs, 47 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1758. Up to 385 conditions per place. [2024-06-27 19:44:48,318 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-27 19:44:48,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 487 flow [2024-06-27 19:44:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:44:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:44:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:44:48,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-27 19:44:48,319 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 343 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:44:48,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 487 flow [2024-06-27 19:44:48,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 449 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:44:48,323 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 330 flow [2024-06-27 19:44:48,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-27 19:44:48,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-27 19:44:48,324 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 330 flow [2024-06-27 19:44:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:48,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:48,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:48,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:44:48,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:48,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1039463554, now seen corresponding path program 1 times [2024-06-27 19:44:48,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:48,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283796700] [2024-06-27 19:44:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:48,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:49,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283796700] [2024-06-27 19:44:49,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283796700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:49,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:49,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:49,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905173663] [2024-06-27 19:44:49,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:49,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:49,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:49,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 330 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:49,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:49,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:49,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:49,400 INFO L124 PetriNetUnfolderBase]: 231/413 cut-off events. [2024-06-27 19:44:49,400 INFO L125 PetriNetUnfolderBase]: For 3782/3782 co-relation queries the response was YES. [2024-06-27 19:44:49,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 413 events. 231/413 cut-off events. For 3782/3782 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1478 event pairs, 46 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1786. Up to 375 conditions per place. [2024-06-27 19:44:49,403 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-27 19:44:49,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 526 flow [2024-06-27 19:44:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 19:44:49,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:44:49,404 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 330 flow. Second operand 8 states and 96 transitions. [2024-06-27 19:44:49,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 526 flow [2024-06-27 19:44:49,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 500 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:49,408 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 349 flow [2024-06-27 19:44:49,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=349, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-27 19:44:49,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-27 19:44:49,409 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 349 flow [2024-06-27 19:44:49,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:49,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:49,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:44:49,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:49,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458718, now seen corresponding path program 1 times [2024-06-27 19:44:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853842793] [2024-06-27 19:44:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:50,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853842793] [2024-06-27 19:44:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853842793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526609194] [2024-06-27 19:44:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:50,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:50,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 349 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:50,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:50,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:50,419 INFO L124 PetriNetUnfolderBase]: 244/434 cut-off events. [2024-06-27 19:44:50,419 INFO L125 PetriNetUnfolderBase]: For 4497/4497 co-relation queries the response was YES. [2024-06-27 19:44:50,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 434 events. 244/434 cut-off events. For 4497/4497 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1591 event pairs, 47 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1944. Up to 326 conditions per place. [2024-06-27 19:44:50,422 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-27 19:44:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 599 flow [2024-06-27 19:44:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 19:44:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 19:44:50,424 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 349 flow. Second operand 8 states and 104 transitions. [2024-06-27 19:44:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 599 flow [2024-06-27 19:44:50,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 570 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:50,429 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 420 flow [2024-06-27 19:44:50,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-06-27 19:44:50,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-27 19:44:50,430 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 420 flow [2024-06-27 19:44:50,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:50,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:50,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:50,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:44:50,431 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:50,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458904, now seen corresponding path program 2 times [2024-06-27 19:44:50,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:50,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248428554] [2024-06-27 19:44:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:51,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:51,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248428554] [2024-06-27 19:44:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248428554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:51,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728249217] [2024-06-27 19:44:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:51,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:51,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:51,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:51,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:51,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 420 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:51,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:51,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:51,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:51,368 INFO L124 PetriNetUnfolderBase]: 247/439 cut-off events. [2024-06-27 19:44:51,368 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2024-06-27 19:44:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 439 events. 247/439 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1602 event pairs, 49 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2139. Up to 374 conditions per place. [2024-06-27 19:44:51,370 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-27 19:44:51,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 676 flow [2024-06-27 19:44:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 19:44:51,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 19:44:51,372 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 420 flow. Second operand 8 states and 99 transitions. [2024-06-27 19:44:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 676 flow [2024-06-27 19:44:51,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 646 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:44:51,377 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 477 flow [2024-06-27 19:44:51,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-27 19:44:51,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-27 19:44:51,378 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 477 flow [2024-06-27 19:44:51,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:51,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:51,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:51,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:44:51,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:51,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1593273604, now seen corresponding path program 2 times [2024-06-27 19:44:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:51,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711439808] [2024-06-27 19:44:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711439808] [2024-06-27 19:44:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711439808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:52,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243109778] [2024-06-27 19:44:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:52,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:52,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:52,288 INFO L124 PetriNetUnfolderBase]: 265/468 cut-off events. [2024-06-27 19:44:52,289 INFO L125 PetriNetUnfolderBase]: For 6320/6320 co-relation queries the response was YES. [2024-06-27 19:44:52,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 468 events. 265/468 cut-off events. For 6320/6320 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1738 event pairs, 48 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 2397. Up to 391 conditions per place. [2024-06-27 19:44:52,292 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-27 19:44:52,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 762 flow [2024-06-27 19:44:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 19:44:52,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-27 19:44:52,293 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 477 flow. Second operand 8 states and 103 transitions. [2024-06-27 19:44:52,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 762 flow [2024-06-27 19:44:52,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 727 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:44:52,300 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 537 flow [2024-06-27 19:44:52,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-27 19:44:52,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-27 19:44:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 537 flow [2024-06-27 19:44:52,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:52,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:52,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:44:52,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:52,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1034810578, now seen corresponding path program 3 times [2024-06-27 19:44:52,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:52,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117960227] [2024-06-27 19:44:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117960227] [2024-06-27 19:44:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117960227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:52,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:52,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711122584] [2024-06-27 19:44:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:53,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:53,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 537 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:53,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:53,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:53,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:53,266 INFO L124 PetriNetUnfolderBase]: 259/459 cut-off events. [2024-06-27 19:44:53,266 INFO L125 PetriNetUnfolderBase]: For 6895/6895 co-relation queries the response was YES. [2024-06-27 19:44:53,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 459 events. 259/459 cut-off events. For 6895/6895 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1699 event pairs, 48 based on Foata normal form. 3/460 useless extension candidates. Maximal degree in co-relation 2407. Up to 392 conditions per place. [2024-06-27 19:44:53,269 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2024-06-27 19:44:53,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 753 flow [2024-06-27 19:44:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:44:53,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 19:44:53,271 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 537 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:44:53,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 753 flow [2024-06-27 19:44:53,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 728 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:44:53,278 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 558 flow [2024-06-27 19:44:53,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-06-27 19:44:53,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-27 19:44:53,278 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 558 flow [2024-06-27 19:44:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:53,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:53,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:44:53,279 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:53,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817274, now seen corresponding path program 3 times [2024-06-27 19:44:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560466281] [2024-06-27 19:44:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560466281] [2024-06-27 19:44:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560466281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:53,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35629788] [2024-06-27 19:44:53,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:53,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:54,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:54,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:54,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:54,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:54,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:54,189 INFO L124 PetriNetUnfolderBase]: 262/464 cut-off events. [2024-06-27 19:44:54,189 INFO L125 PetriNetUnfolderBase]: For 7278/7278 co-relation queries the response was YES. [2024-06-27 19:44:54,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2564 conditions, 464 events. 262/464 cut-off events. For 7278/7278 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1716 event pairs, 51 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2521. Up to 432 conditions per place. [2024-06-27 19:44:54,192 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-06-27 19:44:54,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 764 flow [2024-06-27 19:44:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 19:44:54,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:44:54,193 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 558 flow. Second operand 8 states and 92 transitions. [2024-06-27 19:44:54,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 83 transitions, 764 flow [2024-06-27 19:44:54,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 83 transitions, 719 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:44:54,201 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 570 flow [2024-06-27 19:44:54,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=570, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-27 19:44:54,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-27 19:44:54,201 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 570 flow [2024-06-27 19:44:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:54,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:54,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:54,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:44:54,202 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:54,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash -759604848, now seen corresponding path program 4 times [2024-06-27 19:44:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:54,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727618561] [2024-06-27 19:44:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:54,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:54,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:54,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727618561] [2024-06-27 19:44:54,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727618561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021773422] [2024-06-27 19:44:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:54,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:54,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 570 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:54,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:54,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:55,083 INFO L124 PetriNetUnfolderBase]: 271/479 cut-off events. [2024-06-27 19:44:55,084 INFO L125 PetriNetUnfolderBase]: For 8385/8385 co-relation queries the response was YES. [2024-06-27 19:44:55,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 479 events. 271/479 cut-off events. For 8385/8385 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1788 event pairs, 48 based on Foata normal form. 3/480 useless extension candidates. Maximal degree in co-relation 2602. Up to 433 conditions per place. [2024-06-27 19:44:55,087 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-27 19:44:55,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 807 flow [2024-06-27 19:44:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:44:55,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 19:44:55,088 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 570 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:44:55,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 807 flow [2024-06-27 19:44:55,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 770 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:55,096 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 602 flow [2024-06-27 19:44:55,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-06-27 19:44:55,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-27 19:44:55,097 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 602 flow [2024-06-27 19:44:55,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:55,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:55,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:44:55,097 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:55,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1085049894, now seen corresponding path program 1 times [2024-06-27 19:44:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622941666] [2024-06-27 19:44:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:55,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622941666] [2024-06-27 19:44:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622941666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:55,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078005222] [2024-06-27 19:44:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:55,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:55,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:55,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:55,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:55,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:55,968 INFO L124 PetriNetUnfolderBase]: 267/473 cut-off events. [2024-06-27 19:44:55,969 INFO L125 PetriNetUnfolderBase]: For 8640/8640 co-relation queries the response was YES. [2024-06-27 19:44:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 473 events. 267/473 cut-off events. For 8640/8640 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1769 event pairs, 49 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2604. Up to 445 conditions per place. [2024-06-27 19:44:55,972 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2024-06-27 19:44:55,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 810 flow [2024-06-27 19:44:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 19:44:55,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-27 19:44:55,973 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 602 flow. Second operand 8 states and 89 transitions. [2024-06-27 19:44:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 810 flow [2024-06-27 19:44:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 772 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:55,982 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 613 flow [2024-06-27 19:44:55,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-27 19:44:55,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-27 19:44:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 613 flow [2024-06-27 19:44:55,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:55,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:55,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:44:55,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1829455474, now seen corresponding path program 5 times [2024-06-27 19:44:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011955393] [2024-06-27 19:44:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:56,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011955393] [2024-06-27 19:44:56,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011955393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:56,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:56,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006272297] [2024-06-27 19:44:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:56,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:56,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 613 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:56,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:56,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:56,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:56,896 INFO L124 PetriNetUnfolderBase]: 266/472 cut-off events. [2024-06-27 19:44:56,897 INFO L125 PetriNetUnfolderBase]: For 9046/9046 co-relation queries the response was YES. [2024-06-27 19:44:56,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 472 events. 266/472 cut-off events. For 9046/9046 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1762 event pairs, 48 based on Foata normal form. 3/473 useless extension candidates. Maximal degree in co-relation 2595. Up to 438 conditions per place. [2024-06-27 19:44:56,900 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 19:44:56,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 839 flow [2024-06-27 19:44:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:44:56,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-27 19:44:56,901 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 613 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:44:56,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 839 flow [2024-06-27 19:44:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 803 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:56,911 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 633 flow [2024-06-27 19:44:56,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=633, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2024-06-27 19:44:56,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-27 19:44:56,912 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 633 flow [2024-06-27 19:44:56,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:56,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:56,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:44:56,913 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:56,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -485501606, now seen corresponding path program 4 times [2024-06-27 19:44:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326296378] [2024-06-27 19:44:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:57,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326296378] [2024-06-27 19:44:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326296378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:57,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:57,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687566272] [2024-06-27 19:44:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:57,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:57,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:57,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:57,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:57,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:57,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:57,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:57,725 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-27 19:44:57,725 INFO L125 PetriNetUnfolderBase]: For 9326/9326 co-relation queries the response was YES. [2024-06-27 19:44:57,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 474 events. 267/474 cut-off events. For 9326/9326 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1761 event pairs, 50 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2616. Up to 451 conditions per place. [2024-06-27 19:44:57,728 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 74 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-27 19:44:57,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 841 flow [2024-06-27 19:44:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:44:57,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:44:57,729 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 633 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:44:57,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 89 transitions, 841 flow [2024-06-27 19:44:57,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 790 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:44:57,739 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 634 flow [2024-06-27 19:44:57,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-27 19:44:57,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-27 19:44:57,740 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 634 flow [2024-06-27 19:44:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:57,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:57,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:57,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:44:57,740 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:57,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1076472256, now seen corresponding path program 6 times [2024-06-27 19:44:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:57,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602820630] [2024-06-27 19:44:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602820630] [2024-06-27 19:44:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602820630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:58,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:44:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188301815] [2024-06-27 19:44:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:44:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:44:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:44:58,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:58,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 634 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:58,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:58,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:58,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:58,605 INFO L124 PetriNetUnfolderBase]: 265/471 cut-off events. [2024-06-27 19:44:58,605 INFO L125 PetriNetUnfolderBase]: For 9497/9497 co-relation queries the response was YES. [2024-06-27 19:44:58,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 471 events. 265/471 cut-off events. For 9497/9497 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1761 event pairs, 46 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2590. Up to 408 conditions per place. [2024-06-27 19:44:58,607 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-27 19:44:58,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 92 transitions, 844 flow [2024-06-27 19:44:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 19:44:58,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 19:44:58,608 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 634 flow. Second operand 8 states and 94 transitions. [2024-06-27 19:44:58,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 92 transitions, 844 flow [2024-06-27 19:44:58,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 810 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:44:58,629 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 649 flow [2024-06-27 19:44:58,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-27 19:44:58,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-27 19:44:58,629 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 649 flow [2024-06-27 19:44:58,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:58,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:58,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:44:58,630 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1085060806, now seen corresponding path program 1 times [2024-06-27 19:44:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450229016] [2024-06-27 19:44:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:44:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:44:59,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:44:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450229016] [2024-06-27 19:44:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450229016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:44:59,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:44:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:44:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923232566] [2024-06-27 19:44:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:44:59,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:44:59,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:44:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:44:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:44:59,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:44:59,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 649 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:59,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:44:59,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:44:59,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:44:59,779 INFO L124 PetriNetUnfolderBase]: 262/466 cut-off events. [2024-06-27 19:44:59,780 INFO L125 PetriNetUnfolderBase]: For 10029/10029 co-relation queries the response was YES. [2024-06-27 19:44:59,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 466 events. 262/466 cut-off events. For 10029/10029 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1710 event pairs, 47 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2583. Up to 440 conditions per place. [2024-06-27 19:44:59,783 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 78 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-27 19:44:59,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 91 transitions, 849 flow [2024-06-27 19:44:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:44:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:44:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:44:59,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-27 19:44:59,785 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 649 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:44:59,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 91 transitions, 849 flow [2024-06-27 19:44:59,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 756 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:44:59,795 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 582 flow [2024-06-27 19:44:59,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-27 19:44:59,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-27 19:44:59,795 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 582 flow [2024-06-27 19:44:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:44:59,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:44:59,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:44:59,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:44:59,796 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:44:59,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:44:59,796 INFO L85 PathProgramCache]: Analyzing trace with hash 929401078, now seen corresponding path program 1 times [2024-06-27 19:44:59,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:44:59,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269147777] [2024-06-27 19:44:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:44:59,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:44:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269147777] [2024-06-27 19:45:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269147777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:00,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:45:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888248331] [2024-06-27 19:45:00,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:45:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:45:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:45:00,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:00,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 582 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:00,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:00,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:00,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:00,906 INFO L124 PetriNetUnfolderBase]: 265/471 cut-off events. [2024-06-27 19:45:00,906 INFO L125 PetriNetUnfolderBase]: For 10379/10379 co-relation queries the response was YES. [2024-06-27 19:45:00,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 471 events. 265/471 cut-off events. For 10379/10379 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1749 event pairs, 48 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2526. Up to 419 conditions per place. [2024-06-27 19:45:00,909 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-27 19:45:00,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 840 flow [2024-06-27 19:45:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:45:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:45:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:45:00,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 19:45:00,912 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 582 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:45:00,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 840 flow [2024-06-27 19:45:00,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 814 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:00,925 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 615 flow [2024-06-27 19:45:00,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=615, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-27 19:45:00,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 19:45:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 615 flow [2024-06-27 19:45:00,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:00,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:00,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:00,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:45:00,926 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 929491443, now seen corresponding path program 1 times [2024-06-27 19:45:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319627055] [2024-06-27 19:45:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319627055] [2024-06-27 19:45:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319627055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029786187] [2024-06-27 19:45:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:01,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:01,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 615 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:01,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:01,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:02,213 INFO L124 PetriNetUnfolderBase]: 268/476 cut-off events. [2024-06-27 19:45:02,213 INFO L125 PetriNetUnfolderBase]: For 11122/11122 co-relation queries the response was YES. [2024-06-27 19:45:02,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 476 events. 268/476 cut-off events. For 11122/11122 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1763 event pairs, 47 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 2609. Up to 435 conditions per place. [2024-06-27 19:45:02,216 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-27 19:45:02,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 875 flow [2024-06-27 19:45:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:45:02,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:45:02,227 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 615 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:45:02,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 875 flow [2024-06-27 19:45:02,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 840 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:02,239 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 631 flow [2024-06-27 19:45:02,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=631, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-06-27 19:45:02,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 19:45:02,239 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 631 flow [2024-06-27 19:45:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:02,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:02,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:45:02,240 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 933210358, now seen corresponding path program 2 times [2024-06-27 19:45:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438922417] [2024-06-27 19:45:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438922417] [2024-06-27 19:45:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438922417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:03,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:03,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241551806] [2024-06-27 19:45:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:03,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:03,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 631 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:03,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:03,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:03,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:03,880 INFO L124 PetriNetUnfolderBase]: 271/481 cut-off events. [2024-06-27 19:45:03,881 INFO L125 PetriNetUnfolderBase]: For 11986/11986 co-relation queries the response was YES. [2024-06-27 19:45:03,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 481 events. 271/481 cut-off events. For 11986/11986 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1805 event pairs, 48 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2697. Up to 413 conditions per place. [2024-06-27 19:45:03,883 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 27 changer transitions 0/102 dead transitions. [2024-06-27 19:45:03,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 891 flow [2024-06-27 19:45:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:45:03,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 19:45:03,884 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 631 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:45:03,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 891 flow [2024-06-27 19:45:03,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 856 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:03,896 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 683 flow [2024-06-27 19:45:03,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=683, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-27 19:45:03,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-27 19:45:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 683 flow [2024-06-27 19:45:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:03,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:45:03,897 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:03,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2136513283, now seen corresponding path program 2 times [2024-06-27 19:45:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85419394] [2024-06-27 19:45:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:04,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85419394] [2024-06-27 19:45:04,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85419394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524942002] [2024-06-27 19:45:04,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:04,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:04,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 683 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:04,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:04,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:04,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:04,831 INFO L124 PetriNetUnfolderBase]: 312/547 cut-off events. [2024-06-27 19:45:04,831 INFO L125 PetriNetUnfolderBase]: For 16155/16155 co-relation queries the response was YES. [2024-06-27 19:45:04,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 547 events. 312/547 cut-off events. For 16155/16155 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2147 event pairs, 46 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3272. Up to 302 conditions per place. [2024-06-27 19:45:04,834 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 45 changer transitions 0/121 dead transitions. [2024-06-27 19:45:04,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 121 transitions, 1283 flow [2024-06-27 19:45:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 19:45:04,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-27 19:45:04,834 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 683 flow. Second operand 9 states and 123 transitions. [2024-06-27 19:45:04,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 121 transitions, 1283 flow [2024-06-27 19:45:04,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1212 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:04,848 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 838 flow [2024-06-27 19:45:04,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2024-06-27 19:45:04,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-27 19:45:04,848 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 838 flow [2024-06-27 19:45:04,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:04,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:04,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:04,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:45:04,849 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:04,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2136518863, now seen corresponding path program 3 times [2024-06-27 19:45:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466690282] [2024-06-27 19:45:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:05,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466690282] [2024-06-27 19:45:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466690282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69510125] [2024-06-27 19:45:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:05,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:05,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:05,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:05,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:05,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:05,825 INFO L124 PetriNetUnfolderBase]: 308/541 cut-off events. [2024-06-27 19:45:05,825 INFO L125 PetriNetUnfolderBase]: For 16839/16839 co-relation queries the response was YES. [2024-06-27 19:45:05,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3426 conditions, 541 events. 308/541 cut-off events. For 16839/16839 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2129 event pairs, 45 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 3373. Up to 299 conditions per place. [2024-06-27 19:45:05,828 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 47 changer transitions 0/120 dead transitions. [2024-06-27 19:45:05,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 120 transitions, 1280 flow [2024-06-27 19:45:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 19:45:05,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-27 19:45:05,830 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 838 flow. Second operand 9 states and 121 transitions. [2024-06-27 19:45:05,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 120 transitions, 1280 flow [2024-06-27 19:45:05,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 120 transitions, 1224 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 19:45:05,847 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 881 flow [2024-06-27 19:45:05,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-06-27 19:45:05,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 19:45:05,847 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 881 flow [2024-06-27 19:45:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:05,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:05,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:05,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:45:05,848 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:05,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2136519080, now seen corresponding path program 1 times [2024-06-27 19:45:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:05,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061115620] [2024-06-27 19:45:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:06,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:06,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061115620] [2024-06-27 19:45:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061115620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:06,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:06,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:06,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866484895] [2024-06-27 19:45:06,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 881 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:07,073 INFO L124 PetriNetUnfolderBase]: 324/567 cut-off events. [2024-06-27 19:45:07,073 INFO L125 PetriNetUnfolderBase]: For 19044/19044 co-relation queries the response was YES. [2024-06-27 19:45:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3664 conditions, 567 events. 324/567 cut-off events. For 19044/19044 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2254 event pairs, 52 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3610. Up to 428 conditions per place. [2024-06-27 19:45:07,077 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 83 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-06-27 19:45:07,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 1259 flow [2024-06-27 19:45:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:45:07,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 19:45:07,078 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 881 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:45:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 1259 flow [2024-06-27 19:45:07,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 1171 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:07,098 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 908 flow [2024-06-27 19:45:07,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=908, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2024-06-27 19:45:07,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 19:45:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 908 flow [2024-06-27 19:45:07,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:07,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:07,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:45:07,099 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:07,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2014356093, now seen corresponding path program 4 times [2024-06-27 19:45:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162007845] [2024-06-27 19:45:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162007845] [2024-06-27 19:45:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162007845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653005216] [2024-06-27 19:45:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:07,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:07,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:07,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:07,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:07,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:08,106 INFO L124 PetriNetUnfolderBase]: 342/597 cut-off events. [2024-06-27 19:45:08,106 INFO L125 PetriNetUnfolderBase]: For 22160/22160 co-relation queries the response was YES. [2024-06-27 19:45:08,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 597 events. 342/597 cut-off events. For 22160/22160 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2402 event pairs, 54 based on Foata normal form. 6/601 useless extension candidates. Maximal degree in co-relation 3810. Up to 508 conditions per place. [2024-06-27 19:45:08,109 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-06-27 19:45:08,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 1231 flow [2024-06-27 19:45:08,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:45:08,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 19:45:08,110 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 908 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:45:08,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 1231 flow [2024-06-27 19:45:08,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 1188 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 19:45:08,131 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 958 flow [2024-06-27 19:45:08,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-06-27 19:45:08,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-27 19:45:08,132 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 958 flow [2024-06-27 19:45:08,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:08,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:08,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:08,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:45:08,132 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:08,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2014355876, now seen corresponding path program 2 times [2024-06-27 19:45:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637798095] [2024-06-27 19:45:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637798095] [2024-06-27 19:45:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637798095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:08,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:08,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:08,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76461932] [2024-06-27 19:45:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:08,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:09,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:09,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:09,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:09,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:09,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:09,303 INFO L124 PetriNetUnfolderBase]: 348/607 cut-off events. [2024-06-27 19:45:09,303 INFO L125 PetriNetUnfolderBase]: For 21639/21639 co-relation queries the response was YES. [2024-06-27 19:45:09,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 607 events. 348/607 cut-off events. For 21639/21639 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2456 event pairs, 56 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 3952. Up to 534 conditions per place. [2024-06-27 19:45:09,306 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 22 changer transitions 0/123 dead transitions. [2024-06-27 19:45:09,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 123 transitions, 1260 flow [2024-06-27 19:45:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 19:45:09,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 19:45:09,307 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 958 flow. Second operand 9 states and 110 transitions. [2024-06-27 19:45:09,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 123 transitions, 1260 flow [2024-06-27 19:45:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 1200 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:09,335 INFO L231 Difference]: Finished difference. Result has 121 places, 106 transitions, 971 flow [2024-06-27 19:45:09,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=971, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2024-06-27 19:45:09,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-27 19:45:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 971 flow [2024-06-27 19:45:09,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:09,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:09,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:45:09,336 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:09,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2146842438, now seen corresponding path program 3 times [2024-06-27 19:45:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998184275] [2024-06-27 19:45:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998184275] [2024-06-27 19:45:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998184275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704980854] [2024-06-27 19:45:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:10,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:10,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:10,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:10,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:10,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:10,564 INFO L124 PetriNetUnfolderBase]: 354/617 cut-off events. [2024-06-27 19:45:10,564 INFO L125 PetriNetUnfolderBase]: For 22846/22846 co-relation queries the response was YES. [2024-06-27 19:45:10,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 617 events. 354/617 cut-off events. For 22846/22846 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2504 event pairs, 56 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 4005. Up to 532 conditions per place. [2024-06-27 19:45:10,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-27 19:45:10,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 1281 flow [2024-06-27 19:45:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:45:10,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 19:45:10,568 INFO L175 Difference]: Start difference. First operand has 121 places, 106 transitions, 971 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:45:10,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 1281 flow [2024-06-27 19:45:10,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 1228 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:10,597 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 1003 flow [2024-06-27 19:45:10,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1003, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2024-06-27 19:45:10,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-27 19:45:10,597 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 1003 flow [2024-06-27 19:45:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:10,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:10,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:10,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:45:10,598 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:10,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1077106623, now seen corresponding path program 5 times [2024-06-27 19:45:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335512619] [2024-06-27 19:45:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335512619] [2024-06-27 19:45:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335512619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:11,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198202552] [2024-06-27 19:45:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:11,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:11,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:11,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 1003 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:11,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:11,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:11,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:11,677 INFO L124 PetriNetUnfolderBase]: 370/643 cut-off events. [2024-06-27 19:45:11,677 INFO L125 PetriNetUnfolderBase]: For 25404/25404 co-relation queries the response was YES. [2024-06-27 19:45:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4343 conditions, 643 events. 370/643 cut-off events. For 25404/25404 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2649 event pairs, 55 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4284. Up to 523 conditions per place. [2024-06-27 19:45:11,681 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 31 changer transitions 0/135 dead transitions. [2024-06-27 19:45:11,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 135 transitions, 1564 flow [2024-06-27 19:45:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 19:45:11,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 19:45:11,688 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 1003 flow. Second operand 9 states and 118 transitions. [2024-06-27 19:45:11,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 135 transitions, 1564 flow [2024-06-27 19:45:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 135 transitions, 1499 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:11,714 INFO L231 Difference]: Finished difference. Result has 126 places, 114 transitions, 1111 flow [2024-06-27 19:45:11,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1111, PETRI_PLACES=126, PETRI_TRANSITIONS=114} [2024-06-27 19:45:11,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-27 19:45:11,715 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 114 transitions, 1111 flow [2024-06-27 19:45:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:11,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:11,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:45:11,716 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:11,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1199359857, now seen corresponding path program 6 times [2024-06-27 19:45:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:11,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883699432] [2024-06-27 19:45:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:11,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883699432] [2024-06-27 19:45:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883699432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:12,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:12,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:12,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177285410] [2024-06-27 19:45:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:12,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:12,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 114 transitions, 1111 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:12,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:12,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:12,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:12,703 INFO L124 PetriNetUnfolderBase]: 367/639 cut-off events. [2024-06-27 19:45:12,703 INFO L125 PetriNetUnfolderBase]: For 25765/25765 co-relation queries the response was YES. [2024-06-27 19:45:12,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 639 events. 367/639 cut-off events. For 25765/25765 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2633 event pairs, 54 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 4286. Up to 522 conditions per place. [2024-06-27 19:45:12,707 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-27 19:45:12,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1505 flow [2024-06-27 19:45:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 19:45:12,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 19:45:12,708 INFO L175 Difference]: Start difference. First operand has 126 places, 114 transitions, 1111 flow. Second operand 9 states and 117 transitions. [2024-06-27 19:45:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1505 flow [2024-06-27 19:45:12,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 134 transitions, 1452 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:45:12,740 INFO L231 Difference]: Finished difference. Result has 131 places, 114 transitions, 1128 flow [2024-06-27 19:45:12,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1128, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2024-06-27 19:45:12,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-27 19:45:12,741 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 1128 flow [2024-06-27 19:45:12,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:12,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:12,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:12,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:45:12,742 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:12,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2146836486, now seen corresponding path program 3 times [2024-06-27 19:45:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452816277] [2024-06-27 19:45:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:12,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:13,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452816277] [2024-06-27 19:45:13,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452816277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:13,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:13,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:13,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162887670] [2024-06-27 19:45:13,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:13,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:13,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:13,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:13,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:13,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:13,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 1128 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:13,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:13,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:13,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:13,968 INFO L124 PetriNetUnfolderBase]: 364/634 cut-off events. [2024-06-27 19:45:13,969 INFO L125 PetriNetUnfolderBase]: For 25729/25729 co-relation queries the response was YES. [2024-06-27 19:45:13,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 634 events. 364/634 cut-off events. For 25729/25729 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2600 event pairs, 63 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4288. Up to 599 conditions per place. [2024-06-27 19:45:13,972 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 17 changer transitions 0/126 dead transitions. [2024-06-27 19:45:13,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 1404 flow [2024-06-27 19:45:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:45:13,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:45:13,986 INFO L175 Difference]: Start difference. First operand has 131 places, 114 transitions, 1128 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:45:13,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 1404 flow [2024-06-27 19:45:14,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 126 transitions, 1328 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:14,018 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 1091 flow [2024-06-27 19:45:14,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1091, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2024-06-27 19:45:14,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-27 19:45:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 1091 flow [2024-06-27 19:45:14,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:14,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:14,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:45:14,019 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:14,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 300861080, now seen corresponding path program 4 times [2024-06-27 19:45:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310110429] [2024-06-27 19:45:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310110429] [2024-06-27 19:45:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310110429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26789214] [2024-06-27 19:45:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:15,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:15,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 1091 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:15,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:15,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:15,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:15,279 INFO L124 PetriNetUnfolderBase]: 360/628 cut-off events. [2024-06-27 19:45:15,279 INFO L125 PetriNetUnfolderBase]: For 26138/26138 co-relation queries the response was YES. [2024-06-27 19:45:15,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 628 events. 360/628 cut-off events. For 26138/26138 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2581 event pairs, 57 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4157. Up to 592 conditions per place. [2024-06-27 19:45:15,291 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2024-06-27 19:45:15,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 1389 flow [2024-06-27 19:45:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:45:15,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:45:15,294 INFO L175 Difference]: Start difference. First operand has 133 places, 114 transitions, 1091 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:45:15,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 1389 flow [2024-06-27 19:45:15,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 128 transitions, 1330 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:45:15,329 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 1089 flow [2024-06-27 19:45:15,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1089, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2024-06-27 19:45:15,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-27 19:45:15,331 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 1089 flow [2024-06-27 19:45:15,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:15,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:15,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:45:15,332 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:15,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2136677567, now seen corresponding path program 7 times [2024-06-27 19:45:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902337881] [2024-06-27 19:45:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902337881] [2024-06-27 19:45:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902337881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:15,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:15,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:15,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062579404] [2024-06-27 19:45:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:15,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:15,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:16,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 1089 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:16,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:16,300 INFO L124 PetriNetUnfolderBase]: 378/658 cut-off events. [2024-06-27 19:45:16,300 INFO L125 PetriNetUnfolderBase]: For 30322/30322 co-relation queries the response was YES. [2024-06-27 19:45:16,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 658 events. 378/658 cut-off events. For 30322/30322 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2740 event pairs, 59 based on Foata normal form. 6/662 useless extension candidates. Maximal degree in co-relation 4367. Up to 602 conditions per place. [2024-06-27 19:45:16,303 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2024-06-27 19:45:16,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 1434 flow [2024-06-27 19:45:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:45:16,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 19:45:16,304 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 1089 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:45:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 1434 flow [2024-06-27 19:45:16,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 1393 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:16,343 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1137 flow [2024-06-27 19:45:16,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1137, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-27 19:45:16,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 19:45:16,343 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1137 flow [2024-06-27 19:45:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:16,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:16,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:16,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:45:16,344 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:16,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:16,344 INFO L85 PathProgramCache]: Analyzing trace with hash -989097679, now seen corresponding path program 8 times [2024-06-27 19:45:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:16,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956803571] [2024-06-27 19:45:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:17,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956803571] [2024-06-27 19:45:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956803571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688435580] [2024-06-27 19:45:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:17,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:17,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1137 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:17,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:17,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:17,329 INFO L124 PetriNetUnfolderBase]: 386/671 cut-off events. [2024-06-27 19:45:17,329 INFO L125 PetriNetUnfolderBase]: For 29112/29112 co-relation queries the response was YES. [2024-06-27 19:45:17,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 671 events. 386/671 cut-off events. For 29112/29112 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2827 event pairs, 49 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 4554. Up to 572 conditions per place. [2024-06-27 19:45:17,334 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-27 19:45:17,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 142 transitions, 1733 flow [2024-06-27 19:45:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:45:17,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 19:45:17,345 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1137 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:45:17,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 142 transitions, 1733 flow [2024-06-27 19:45:17,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 142 transitions, 1659 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:17,383 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 1277 flow [2024-06-27 19:45:17,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1277, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2024-06-27 19:45:17,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-27 19:45:17,383 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 1277 flow [2024-06-27 19:45:17,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:17,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:17,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:45:17,384 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:17,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -732395142, now seen corresponding path program 5 times [2024-06-27 19:45:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:17,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010372239] [2024-06-27 19:45:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:18,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010372239] [2024-06-27 19:45:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010372239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:18,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:18,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413757935] [2024-06-27 19:45:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:18,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:18,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 1277 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:18,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:18,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:18,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:18,542 INFO L124 PetriNetUnfolderBase]: 392/681 cut-off events. [2024-06-27 19:45:18,543 INFO L125 PetriNetUnfolderBase]: For 31411/31411 co-relation queries the response was YES. [2024-06-27 19:45:18,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4764 conditions, 681 events. 392/681 cut-off events. For 31411/31411 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2850 event pairs, 61 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 4696. Up to 641 conditions per place. [2024-06-27 19:45:18,546 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 15 changer transitions 0/143 dead transitions. [2024-06-27 19:45:18,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 1617 flow [2024-06-27 19:45:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:45:18,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:45:18,548 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 1277 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:45:18,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 1617 flow [2024-06-27 19:45:18,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 1572 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 19:45:18,588 INFO L231 Difference]: Finished difference. Result has 142 places, 130 transitions, 1299 flow [2024-06-27 19:45:18,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=142, PETRI_TRANSITIONS=130} [2024-06-27 19:45:18,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-27 19:45:18,588 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 130 transitions, 1299 flow [2024-06-27 19:45:18,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:18,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:18,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:45:18,590 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:18,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2129320337, now seen corresponding path program 9 times [2024-06-27 19:45:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508531980] [2024-06-27 19:45:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:19,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:19,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508531980] [2024-06-27 19:45:19,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508531980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801706327] [2024-06-27 19:45:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:19,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:19,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:19,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:19,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 130 transitions, 1299 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:19,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:19,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:19,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:19,636 INFO L124 PetriNetUnfolderBase]: 393/683 cut-off events. [2024-06-27 19:45:19,636 INFO L125 PetriNetUnfolderBase]: For 31999/31999 co-relation queries the response was YES. [2024-06-27 19:45:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 683 events. 393/683 cut-off events. For 31999/31999 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2886 event pairs, 50 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4729. Up to 546 conditions per place. [2024-06-27 19:45:19,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 38 changer transitions 0/146 dead transitions. [2024-06-27 19:45:19,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 1741 flow [2024-06-27 19:45:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:45:19,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-27 19:45:19,641 INFO L175 Difference]: Start difference. First operand has 142 places, 130 transitions, 1299 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:45:19,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 1741 flow [2024-06-27 19:45:19,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 146 transitions, 1682 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:19,690 INFO L231 Difference]: Finished difference. Result has 144 places, 132 transitions, 1361 flow [2024-06-27 19:45:19,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=144, PETRI_TRANSITIONS=132} [2024-06-27 19:45:19,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 19:45:19,690 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 132 transitions, 1361 flow [2024-06-27 19:45:19,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:19,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:19,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:19,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:45:19,691 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:19,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash -989097462, now seen corresponding path program 6 times [2024-06-27 19:45:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:19,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531614793] [2024-06-27 19:45:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:19,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531614793] [2024-06-27 19:45:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531614793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005116757] [2024-06-27 19:45:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:20,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:20,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:20,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 132 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:20,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:20,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:20,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:20,862 INFO L124 PetriNetUnfolderBase]: 399/693 cut-off events. [2024-06-27 19:45:20,862 INFO L125 PetriNetUnfolderBase]: For 33840/33840 co-relation queries the response was YES. [2024-06-27 19:45:20,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 693 events. 399/693 cut-off events. For 33840/33840 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2946 event pairs, 57 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 4857. Up to 609 conditions per place. [2024-06-27 19:45:20,865 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 19:45:20,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 148 transitions, 1803 flow [2024-06-27 19:45:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:45:20,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:45:20,867 INFO L175 Difference]: Start difference. First operand has 144 places, 132 transitions, 1361 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:45:20,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 148 transitions, 1803 flow [2024-06-27 19:45:20,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 1649 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:20,910 INFO L231 Difference]: Finished difference. Result has 145 places, 134 transitions, 1296 flow [2024-06-27 19:45:20,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=145, PETRI_TRANSITIONS=134} [2024-06-27 19:45:20,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-27 19:45:20,910 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 1296 flow [2024-06-27 19:45:20,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:20,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:20,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:20,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:45:20,911 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:20,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash -988895869, now seen corresponding path program 10 times [2024-06-27 19:45:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071078734] [2024-06-27 19:45:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071078734] [2024-06-27 19:45:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071078734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:21,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080787282] [2024-06-27 19:45:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:21,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:21,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:21,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:21,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:21,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:21,876 INFO L124 PetriNetUnfolderBase]: 392/683 cut-off events. [2024-06-27 19:45:21,876 INFO L125 PetriNetUnfolderBase]: For 33974/33974 co-relation queries the response was YES. [2024-06-27 19:45:21,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 683 events. 392/683 cut-off events. For 33974/33974 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2900 event pairs, 52 based on Foata normal form. 6/687 useless extension candidates. Maximal degree in co-relation 4482. Up to 615 conditions per place. [2024-06-27 19:45:21,880 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 21 changer transitions 0/152 dead transitions. [2024-06-27 19:45:21,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 1675 flow [2024-06-27 19:45:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:45:21,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 19:45:21,880 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 1296 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:45:21,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 1675 flow [2024-06-27 19:45:21,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 152 transitions, 1561 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:21,929 INFO L231 Difference]: Finished difference. Result has 147 places, 136 transitions, 1272 flow [2024-06-27 19:45:21,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1272, PETRI_PLACES=147, PETRI_TRANSITIONS=136} [2024-06-27 19:45:21,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 19:45:21,930 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 136 transitions, 1272 flow [2024-06-27 19:45:21,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:21,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:21,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:21,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:45:21,931 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:21,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash -988895652, now seen corresponding path program 7 times [2024-06-27 19:45:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:21,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965309658] [2024-06-27 19:45:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:22,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965309658] [2024-06-27 19:45:22,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965309658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:22,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:22,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182809945] [2024-06-27 19:45:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:22,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:22,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:22,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 1272 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:22,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:22,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:22,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:23,113 INFO L124 PetriNetUnfolderBase]: 388/677 cut-off events. [2024-06-27 19:45:23,113 INFO L125 PetriNetUnfolderBase]: For 29352/29352 co-relation queries the response was YES. [2024-06-27 19:45:23,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 677 events. 388/677 cut-off events. For 29352/29352 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2876 event pairs, 53 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 4302. Up to 625 conditions per place. [2024-06-27 19:45:23,116 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2024-06-27 19:45:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 151 transitions, 1606 flow [2024-06-27 19:45:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:45:23,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:45:23,121 INFO L175 Difference]: Start difference. First operand has 147 places, 136 transitions, 1272 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:45:23,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 151 transitions, 1606 flow [2024-06-27 19:45:23,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 1524 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:23,168 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 1231 flow [2024-06-27 19:45:23,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2024-06-27 19:45:23,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 19:45:23,169 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 1231 flow [2024-06-27 19:45:23,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:23,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:23,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:23,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:45:23,169 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:23,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1689250213, now seen corresponding path program 1 times [2024-06-27 19:45:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:23,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108719870] [2024-06-27 19:45:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:24,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:24,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108719870] [2024-06-27 19:45:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108719870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832275780] [2024-06-27 19:45:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:24,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:24,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:24,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 1231 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:24,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:24,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:24,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:24,706 INFO L124 PetriNetUnfolderBase]: 399/698 cut-off events. [2024-06-27 19:45:24,706 INFO L125 PetriNetUnfolderBase]: For 32723/32723 co-relation queries the response was YES. [2024-06-27 19:45:24,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4554 conditions, 698 events. 399/698 cut-off events. For 32723/32723 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3010 event pairs, 41 based on Foata normal form. 2/698 useless extension candidates. Maximal degree in co-relation 4482. Up to 611 conditions per place. [2024-06-27 19:45:24,710 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-06-27 19:45:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 164 transitions, 1749 flow [2024-06-27 19:45:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:45:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:45:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:45:24,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 19:45:24,711 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 1231 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:45:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 164 transitions, 1749 flow [2024-06-27 19:45:24,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 1667 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 19:45:24,764 INFO L231 Difference]: Finished difference. Result has 151 places, 138 transitions, 1231 flow [2024-06-27 19:45:24,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1231, PETRI_PLACES=151, PETRI_TRANSITIONS=138} [2024-06-27 19:45:24,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-27 19:45:24,764 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 138 transitions, 1231 flow [2024-06-27 19:45:24,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:24,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:24,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:45:24,765 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:24,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1689310663, now seen corresponding path program 2 times [2024-06-27 19:45:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430836564] [2024-06-27 19:45:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:25,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430836564] [2024-06-27 19:45:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430836564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060648080] [2024-06-27 19:45:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:26,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 138 transitions, 1231 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:26,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:26,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:26,462 INFO L124 PetriNetUnfolderBase]: 406/711 cut-off events. [2024-06-27 19:45:26,463 INFO L125 PetriNetUnfolderBase]: For 34208/34208 co-relation queries the response was YES. [2024-06-27 19:45:26,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 711 events. 406/711 cut-off events. For 34208/34208 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3078 event pairs, 58 based on Foata normal form. 2/711 useless extension candidates. Maximal degree in co-relation 4517. Up to 652 conditions per place. [2024-06-27 19:45:26,467 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-27 19:45:26,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 165 transitions, 1656 flow [2024-06-27 19:45:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:45:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:45:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:45:26,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 19:45:26,468 INFO L175 Difference]: Start difference. First operand has 151 places, 138 transitions, 1231 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:45:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 165 transitions, 1656 flow [2024-06-27 19:45:26,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 165 transitions, 1597 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:26,515 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 1257 flow [2024-06-27 19:45:26,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1257, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2024-06-27 19:45:26,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-27 19:45:26,515 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 1257 flow [2024-06-27 19:45:26,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:26,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:26,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:45:26,516 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:26,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1802814497, now seen corresponding path program 1 times [2024-06-27 19:45:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112763793] [2024-06-27 19:45:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112763793] [2024-06-27 19:45:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112763793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853880394] [2024-06-27 19:45:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:27,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:27,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:27,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 1257 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:27,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:27,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:27,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:27,910 INFO L124 PetriNetUnfolderBase]: 409/716 cut-off events. [2024-06-27 19:45:27,910 INFO L125 PetriNetUnfolderBase]: For 34596/34596 co-relation queries the response was YES. [2024-06-27 19:45:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 716 events. 409/716 cut-off events. For 34596/34596 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3107 event pairs, 57 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 4531. Up to 651 conditions per place. [2024-06-27 19:45:27,914 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 22 changer transitions 0/167 dead transitions. [2024-06-27 19:45:27,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 167 transitions, 1763 flow [2024-06-27 19:45:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:45:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:45:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:45:27,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:45:27,919 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 1257 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:45:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 167 transitions, 1763 flow [2024-06-27 19:45:27,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 167 transitions, 1719 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:27,982 INFO L231 Difference]: Finished difference. Result has 159 places, 143 transitions, 1284 flow [2024-06-27 19:45:27,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1284, PETRI_PLACES=159, PETRI_TRANSITIONS=143} [2024-06-27 19:45:27,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-27 19:45:27,983 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 143 transitions, 1284 flow [2024-06-27 19:45:27,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:27,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:27,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:27,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:45:27,983 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:27,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1250535555, now seen corresponding path program 2 times [2024-06-27 19:45:27,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:27,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582551689] [2024-06-27 19:45:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:27,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582551689] [2024-06-27 19:45:28,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582551689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:28,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:28,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:45:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711227174] [2024-06-27 19:45:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:45:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:45:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:45:28,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:28,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 143 transitions, 1284 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:28,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:28,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:28,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:29,157 INFO L124 PetriNetUnfolderBase]: 407/713 cut-off events. [2024-06-27 19:45:29,158 INFO L125 PetriNetUnfolderBase]: For 34690/34690 co-relation queries the response was YES. [2024-06-27 19:45:29,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 713 events. 407/713 cut-off events. For 34690/34690 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3088 event pairs, 57 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 4488. Up to 649 conditions per place. [2024-06-27 19:45:29,161 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-06-27 19:45:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 1646 flow [2024-06-27 19:45:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:45:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:45:29,164 INFO L175 Difference]: Start difference. First operand has 159 places, 143 transitions, 1284 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:45:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 1646 flow [2024-06-27 19:45:29,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 161 transitions, 1589 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:29,231 INFO L231 Difference]: Finished difference. Result has 160 places, 143 transitions, 1279 flow [2024-06-27 19:45:29,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1279, PETRI_PLACES=160, PETRI_TRANSITIONS=143} [2024-06-27 19:45:29,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 19:45:29,231 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 143 transitions, 1279 flow [2024-06-27 19:45:29,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:29,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:29,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:45:29,232 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:29,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1250535369, now seen corresponding path program 1 times [2024-06-27 19:45:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:29,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452359101] [2024-06-27 19:45:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452359101] [2024-06-27 19:45:30,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452359101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:30,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:30,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:30,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089056437] [2024-06-27 19:45:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:30,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:30,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:30,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 143 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:30,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:30,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:30,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:30,796 INFO L124 PetriNetUnfolderBase]: 413/723 cut-off events. [2024-06-27 19:45:30,796 INFO L125 PetriNetUnfolderBase]: For 37312/37312 co-relation queries the response was YES. [2024-06-27 19:45:30,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 723 events. 413/723 cut-off events. For 37312/37312 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3148 event pairs, 56 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 4557. Up to 676 conditions per place. [2024-06-27 19:45:30,800 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2024-06-27 19:45:30,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 1679 flow [2024-06-27 19:45:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:45:30,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:45:30,801 INFO L175 Difference]: Start difference. First operand has 160 places, 143 transitions, 1279 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:45:30,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 1679 flow [2024-06-27 19:45:30,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 165 transitions, 1612 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:45:30,871 INFO L231 Difference]: Finished difference. Result has 160 places, 145 transitions, 1279 flow [2024-06-27 19:45:30,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=160, PETRI_TRANSITIONS=145} [2024-06-27 19:45:30,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 19:45:30,872 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 145 transitions, 1279 flow [2024-06-27 19:45:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:30,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:30,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:30,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:45:30,872 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:30,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1250540329, now seen corresponding path program 3 times [2024-06-27 19:45:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137314283] [2024-06-27 19:45:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137314283] [2024-06-27 19:45:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137314283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078813059] [2024-06-27 19:45:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:31,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:32,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:32,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 145 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:32,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:32,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:32,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:32,355 INFO L124 PetriNetUnfolderBase]: 410/718 cut-off events. [2024-06-27 19:45:32,355 INFO L125 PetriNetUnfolderBase]: For 34861/34861 co-relation queries the response was YES. [2024-06-27 19:45:32,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 718 events. 410/718 cut-off events. For 34861/34861 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3126 event pairs, 55 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4453. Up to 653 conditions per place. [2024-06-27 19:45:32,359 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 144 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-06-27 19:45:32,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 164 transitions, 1649 flow [2024-06-27 19:45:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:45:32,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 19:45:32,360 INFO L175 Difference]: Start difference. First operand has 160 places, 145 transitions, 1279 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:45:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 164 transitions, 1649 flow [2024-06-27 19:45:32,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 1588 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:32,428 INFO L231 Difference]: Finished difference. Result has 161 places, 145 transitions, 1260 flow [2024-06-27 19:45:32,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1260, PETRI_PLACES=161, PETRI_TRANSITIONS=145} [2024-06-27 19:45:32,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-27 19:45:32,428 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 145 transitions, 1260 flow [2024-06-27 19:45:32,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:32,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:32,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:45:32,429 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1135249159, now seen corresponding path program 4 times [2024-06-27 19:45:32,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:32,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849452319] [2024-06-27 19:45:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849452319] [2024-06-27 19:45:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849452319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:33,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271997523] [2024-06-27 19:45:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:33,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:33,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 145 transitions, 1260 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:33,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:33,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:33,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:34,087 INFO L124 PetriNetUnfolderBase]: 414/726 cut-off events. [2024-06-27 19:45:34,087 INFO L125 PetriNetUnfolderBase]: For 36423/36423 co-relation queries the response was YES. [2024-06-27 19:45:34,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 726 events. 414/726 cut-off events. For 36423/36423 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3189 event pairs, 56 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4500. Up to 652 conditions per place. [2024-06-27 19:45:34,091 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 133 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-27 19:45:34,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 163 transitions, 1644 flow [2024-06-27 19:45:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:45:34,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 19:45:34,092 INFO L175 Difference]: Start difference. First operand has 161 places, 145 transitions, 1260 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:45:34,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 163 transitions, 1644 flow [2024-06-27 19:45:34,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 163 transitions, 1604 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:34,156 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1304 flow [2024-06-27 19:45:34,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-27 19:45:34,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-27 19:45:34,156 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1304 flow [2024-06-27 19:45:34,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:34,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:34,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:34,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:45:34,157 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:34,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1807403303, now seen corresponding path program 2 times [2024-06-27 19:45:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615757028] [2024-06-27 19:45:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:35,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:35,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615757028] [2024-06-27 19:45:35,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615757028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:35,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:35,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32293210] [2024-06-27 19:45:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:35,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:35,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1304 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:35,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:35,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:35,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:35,485 INFO L124 PetriNetUnfolderBase]: 440/768 cut-off events. [2024-06-27 19:45:35,485 INFO L125 PetriNetUnfolderBase]: For 41867/41867 co-relation queries the response was YES. [2024-06-27 19:45:35,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 768 events. 440/768 cut-off events. For 41867/41867 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3437 event pairs, 43 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 4952. Up to 475 conditions per place. [2024-06-27 19:45:35,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-06-27 19:45:35,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 182 transitions, 2068 flow [2024-06-27 19:45:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 19:45:35,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 19:45:35,490 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1304 flow. Second operand 10 states and 132 transitions. [2024-06-27 19:45:35,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 182 transitions, 2068 flow [2024-06-27 19:45:35,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 182 transitions, 1994 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:35,559 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 1493 flow [2024-06-27 19:45:35,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1493, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-06-27 19:45:35,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-27 19:45:35,560 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 1493 flow [2024-06-27 19:45:35,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:35,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:35,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:35,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:45:35,560 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:35,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576283, now seen corresponding path program 3 times [2024-06-27 19:45:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152108659] [2024-06-27 19:45:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152108659] [2024-06-27 19:45:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152108659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084440201] [2024-06-27 19:45:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:36,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:36,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 1493 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:36,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:36,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:36,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:36,929 INFO L124 PetriNetUnfolderBase]: 446/778 cut-off events. [2024-06-27 19:45:36,929 INFO L125 PetriNetUnfolderBase]: For 43963/43963 co-relation queries the response was YES. [2024-06-27 19:45:36,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 778 events. 446/778 cut-off events. For 43963/43963 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3498 event pairs, 42 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 5209. Up to 481 conditions per place. [2024-06-27 19:45:36,934 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 127 selfloop transitions, 55 changer transitions 0/184 dead transitions. [2024-06-27 19:45:36,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 184 transitions, 2183 flow [2024-06-27 19:45:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 19:45:36,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-27 19:45:36,935 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 1493 flow. Second operand 10 states and 131 transitions. [2024-06-27 19:45:36,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 184 transitions, 2183 flow [2024-06-27 19:45:37,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 184 transitions, 2094 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 19:45:37,013 INFO L231 Difference]: Finished difference. Result has 174 places, 158 transitions, 1567 flow [2024-06-27 19:45:37,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1567, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2024-06-27 19:45:37,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-27 19:45:37,014 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1567 flow [2024-06-27 19:45:37,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:37,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:37,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:37,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:45:37,014 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1807582793, now seen corresponding path program 4 times [2024-06-27 19:45:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182184205] [2024-06-27 19:45:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:37,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:37,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:37,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182184205] [2024-06-27 19:45:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182184205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:37,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:37,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291857343] [2024-06-27 19:45:37,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:37,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:37,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:37,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1567 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:37,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:37,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:37,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:38,341 INFO L124 PetriNetUnfolderBase]: 442/772 cut-off events. [2024-06-27 19:45:38,341 INFO L125 PetriNetUnfolderBase]: For 42756/42756 co-relation queries the response was YES. [2024-06-27 19:45:38,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 772 events. 442/772 cut-off events. For 42756/42756 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3452 event pairs, 42 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 5191. Up to 478 conditions per place. [2024-06-27 19:45:38,346 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 58 changer transitions 0/183 dead transitions. [2024-06-27 19:45:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 183 transitions, 2123 flow [2024-06-27 19:45:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:45:38,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 19:45:38,346 INFO L175 Difference]: Start difference. First operand has 174 places, 158 transitions, 1567 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:45:38,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 183 transitions, 2123 flow [2024-06-27 19:45:38,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 183 transitions, 1966 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:38,429 INFO L231 Difference]: Finished difference. Result has 176 places, 159 transitions, 1546 flow [2024-06-27 19:45:38,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1546, PETRI_PLACES=176, PETRI_TRANSITIONS=159} [2024-06-27 19:45:38,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 19:45:38,429 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 159 transitions, 1546 flow [2024-06-27 19:45:38,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:38,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:38,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:45:38,429 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:38,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1973215417, now seen corresponding path program 5 times [2024-06-27 19:45:38,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:38,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295009277] [2024-06-27 19:45:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:38,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295009277] [2024-06-27 19:45:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295009277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787222500] [2024-06-27 19:45:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:39,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:39,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 159 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:39,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:39,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:39,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:39,805 INFO L124 PetriNetUnfolderBase]: 478/830 cut-off events. [2024-06-27 19:45:39,805 INFO L125 PetriNetUnfolderBase]: For 53601/53601 co-relation queries the response was YES. [2024-06-27 19:45:39,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5979 conditions, 830 events. 478/830 cut-off events. For 53601/53601 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3783 event pairs, 54 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 5894. Up to 686 conditions per place. [2024-06-27 19:45:39,810 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 34 changer transitions 0/193 dead transitions. [2024-06-27 19:45:39,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 193 transitions, 2481 flow [2024-06-27 19:45:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 19:45:39,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 19:45:39,811 INFO L175 Difference]: Start difference. First operand has 176 places, 159 transitions, 1546 flow. Second operand 10 states and 130 transitions. [2024-06-27 19:45:39,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 193 transitions, 2481 flow [2024-06-27 19:45:39,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 193 transitions, 2360 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:39,913 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 1669 flow [2024-06-27 19:45:39,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1669, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-06-27 19:45:39,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 19:45:39,913 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 1669 flow [2024-06-27 19:45:39,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:39,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:39,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:39,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:45:39,914 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:39,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1973221927, now seen corresponding path program 6 times [2024-06-27 19:45:39,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:39,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302629920] [2024-06-27 19:45:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:39,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302629920] [2024-06-27 19:45:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302629920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:40,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631177192] [2024-06-27 19:45:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:40,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:40,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 1669 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:40,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:40,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:40,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:41,252 INFO L124 PetriNetUnfolderBase]: 474/824 cut-off events. [2024-06-27 19:45:41,252 INFO L125 PetriNetUnfolderBase]: For 52279/52279 co-relation queries the response was YES. [2024-06-27 19:45:41,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5811 conditions, 824 events. 474/824 cut-off events. For 52279/52279 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3754 event pairs, 54 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 5724. Up to 683 conditions per place. [2024-06-27 19:45:41,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 37 changer transitions 0/193 dead transitions. [2024-06-27 19:45:41,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 193 transitions, 2371 flow [2024-06-27 19:45:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 19:45:41,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 19:45:41,259 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 1669 flow. Second operand 10 states and 127 transitions. [2024-06-27 19:45:41,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 193 transitions, 2371 flow [2024-06-27 19:45:41,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 193 transitions, 2282 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 19:45:41,354 INFO L231 Difference]: Finished difference. Result has 187 places, 171 transitions, 1711 flow [2024-06-27 19:45:41,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1711, PETRI_PLACES=187, PETRI_TRANSITIONS=171} [2024-06-27 19:45:41,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-27 19:45:41,355 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 171 transitions, 1711 flow [2024-06-27 19:45:41,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:41,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:45:41,355 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:41,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1973042437, now seen corresponding path program 7 times [2024-06-27 19:45:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168723285] [2024-06-27 19:45:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168723285] [2024-06-27 19:45:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168723285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392553235] [2024-06-27 19:45:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:42,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:42,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:42,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:42,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 171 transitions, 1711 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:42,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:42,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:42,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:42,652 INFO L124 PetriNetUnfolderBase]: 470/818 cut-off events. [2024-06-27 19:45:42,652 INFO L125 PetriNetUnfolderBase]: For 50705/50705 co-relation queries the response was YES. [2024-06-27 19:45:42,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 818 events. 470/818 cut-off events. For 50705/50705 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3715 event pairs, 55 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5617. Up to 680 conditions per place. [2024-06-27 19:45:42,657 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 38 changer transitions 0/192 dead transitions. [2024-06-27 19:45:42,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 192 transitions, 2258 flow [2024-06-27 19:45:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:45:42,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 19:45:42,658 INFO L175 Difference]: Start difference. First operand has 187 places, 171 transitions, 1711 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:45:42,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 192 transitions, 2258 flow [2024-06-27 19:45:42,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 192 transitions, 2173 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:42,754 INFO L231 Difference]: Finished difference. Result has 191 places, 171 transitions, 1707 flow [2024-06-27 19:45:42,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1707, PETRI_PLACES=191, PETRI_TRANSITIONS=171} [2024-06-27 19:45:42,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-27 19:45:42,755 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 171 transitions, 1707 flow [2024-06-27 19:45:42,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:42,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:42,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:45:42,755 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:42,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1973037477, now seen corresponding path program 5 times [2024-06-27 19:45:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526038936] [2024-06-27 19:45:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526038936] [2024-06-27 19:45:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526038936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552569692] [2024-06-27 19:45:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:44,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:44,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:44,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 171 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:44,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:44,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:44,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:44,399 INFO L124 PetriNetUnfolderBase]: 474/826 cut-off events. [2024-06-27 19:45:44,400 INFO L125 PetriNetUnfolderBase]: For 52578/52578 co-relation queries the response was YES. [2024-06-27 19:45:44,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 826 events. 474/826 cut-off events. For 52578/52578 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3761 event pairs, 66 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5698. Up to 785 conditions per place. [2024-06-27 19:45:44,405 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2024-06-27 19:45:44,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 186 transitions, 2131 flow [2024-06-27 19:45:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:45:44,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:45:44,406 INFO L175 Difference]: Start difference. First operand has 191 places, 171 transitions, 1707 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:45:44,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 186 transitions, 2131 flow [2024-06-27 19:45:44,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 186 transitions, 2051 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:44,510 INFO L231 Difference]: Finished difference. Result has 193 places, 172 transitions, 1693 flow [2024-06-27 19:45:44,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1693, PETRI_PLACES=193, PETRI_TRANSITIONS=172} [2024-06-27 19:45:44,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-27 19:45:44,511 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 172 transitions, 1693 flow [2024-06-27 19:45:44,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:44,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:44,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:45:44,517 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:44,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2134102569, now seen corresponding path program 1 times [2024-06-27 19:45:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:44,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172086479] [2024-06-27 19:45:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:44,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172086479] [2024-06-27 19:45:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172086479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:45,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:45,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93340745] [2024-06-27 19:45:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:45,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:45,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:45,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 172 transitions, 1693 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:45,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:45,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:45,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:45,861 INFO L124 PetriNetUnfolderBase]: 478/834 cut-off events. [2024-06-27 19:45:45,862 INFO L125 PetriNetUnfolderBase]: For 54250/54250 co-relation queries the response was YES. [2024-06-27 19:45:45,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 834 events. 478/834 cut-off events. For 54250/54250 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3829 event pairs, 59 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5696. Up to 772 conditions per place. [2024-06-27 19:45:45,867 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 20 changer transitions 0/190 dead transitions. [2024-06-27 19:45:45,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 190 transitions, 2131 flow [2024-06-27 19:45:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:45:45,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 19:45:45,868 INFO L175 Difference]: Start difference. First operand has 193 places, 172 transitions, 1693 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:45:45,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 190 transitions, 2131 flow [2024-06-27 19:45:45,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 190 transitions, 2075 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:45:45,978 INFO L231 Difference]: Finished difference. Result has 195 places, 175 transitions, 1716 flow [2024-06-27 19:45:45,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1716, PETRI_PLACES=195, PETRI_TRANSITIONS=175} [2024-06-27 19:45:45,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-27 19:45:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 175 transitions, 1716 flow [2024-06-27 19:45:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:45,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:45,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:45:45,978 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:45,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471527, now seen corresponding path program 8 times [2024-06-27 19:45:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808273120] [2024-06-27 19:45:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808273120] [2024-06-27 19:45:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808273120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442404073] [2024-06-27 19:45:46,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:46,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:46,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 175 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:46,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:46,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:46,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:47,306 INFO L124 PetriNetUnfolderBase]: 484/844 cut-off events. [2024-06-27 19:45:47,306 INFO L125 PetriNetUnfolderBase]: For 55972/55972 co-relation queries the response was YES. [2024-06-27 19:45:47,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 844 events. 484/844 cut-off events. For 55972/55972 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3890 event pairs, 54 based on Foata normal form. 2/844 useless extension candidates. Maximal degree in co-relation 5779. Up to 743 conditions per place. [2024-06-27 19:45:47,312 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 28 changer transitions 0/197 dead transitions. [2024-06-27 19:45:47,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 197 transitions, 2309 flow [2024-06-27 19:45:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:45:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 19:45:47,313 INFO L175 Difference]: Start difference. First operand has 195 places, 175 transitions, 1716 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:45:47,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 197 transitions, 2309 flow [2024-06-27 19:45:47,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 197 transitions, 2263 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:47,428 INFO L231 Difference]: Finished difference. Result has 200 places, 178 transitions, 1782 flow [2024-06-27 19:45:47,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1782, PETRI_PLACES=200, PETRI_TRANSITIONS=178} [2024-06-27 19:45:47,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 19:45:47,428 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 178 transitions, 1782 flow [2024-06-27 19:45:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:47,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:45:47,429 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -963169465, now seen corresponding path program 9 times [2024-06-27 19:45:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649857100] [2024-06-27 19:45:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649857100] [2024-06-27 19:45:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649857100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:48,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831816105] [2024-06-27 19:45:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:48,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:48,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 178 transitions, 1782 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:48,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:48,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:48,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:48,790 INFO L124 PetriNetUnfolderBase]: 565/979 cut-off events. [2024-06-27 19:45:48,791 INFO L125 PetriNetUnfolderBase]: For 65628/65628 co-relation queries the response was YES. [2024-06-27 19:45:48,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7033 conditions, 979 events. 565/979 cut-off events. For 65628/65628 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4627 event pairs, 83 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 6937. Up to 849 conditions per place. [2024-06-27 19:45:48,798 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 185 selfloop transitions, 37 changer transitions 0/224 dead transitions. [2024-06-27 19:45:48,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 224 transitions, 2902 flow [2024-06-27 19:45:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:45:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:45:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:45:48,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 19:45:48,799 INFO L175 Difference]: Start difference. First operand has 200 places, 178 transitions, 1782 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:45:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 224 transitions, 2902 flow [2024-06-27 19:45:48,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 224 transitions, 2736 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:45:48,939 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 2152 flow [2024-06-27 19:45:48,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2152, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2024-06-27 19:45:48,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-27 19:45:48,939 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 2152 flow [2024-06-27 19:45:48,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:48,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:48,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:45:48,940 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:48,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash 506833881, now seen corresponding path program 10 times [2024-06-27 19:45:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:48,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836717990] [2024-06-27 19:45:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:48,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836717990] [2024-06-27 19:45:49,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836717990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:49,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:49,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:49,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368768114] [2024-06-27 19:45:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:49,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:49,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:49,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:49,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:49,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:49,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 2152 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:49,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:49,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:49,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:50,391 INFO L124 PetriNetUnfolderBase]: 597/1031 cut-off events. [2024-06-27 19:45:50,391 INFO L125 PetriNetUnfolderBase]: For 79699/79699 co-relation queries the response was YES. [2024-06-27 19:45:50,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7720 conditions, 1031 events. 597/1031 cut-off events. For 79699/79699 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4929 event pairs, 89 based on Foata normal form. 4/1033 useless extension candidates. Maximal degree in co-relation 7617. Up to 916 conditions per place. [2024-06-27 19:45:50,398 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-06-27 19:45:50,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 229 transitions, 2924 flow [2024-06-27 19:45:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:45:50,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 19:45:50,399 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 2152 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:45:50,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 229 transitions, 2924 flow [2024-06-27 19:45:50,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 229 transitions, 2896 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 19:45:50,570 INFO L231 Difference]: Finished difference. Result has 217 places, 211 transitions, 2331 flow [2024-06-27 19:45:50,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2331, PETRI_PLACES=217, PETRI_TRANSITIONS=211} [2024-06-27 19:45:50,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-27 19:45:50,571 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 211 transitions, 2331 flow [2024-06-27 19:45:50,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:50,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:50,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:50,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:45:50,571 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:50,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash -590753819, now seen corresponding path program 2 times [2024-06-27 19:45:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:50,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969827263] [2024-06-27 19:45:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:50,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:51,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969827263] [2024-06-27 19:45:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969827263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:51,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:51,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347082236] [2024-06-27 19:45:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:51,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:51,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:51,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:51,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 211 transitions, 2331 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:51,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:51,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:51,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:51,910 INFO L124 PetriNetUnfolderBase]: 601/1039 cut-off events. [2024-06-27 19:45:51,910 INFO L125 PetriNetUnfolderBase]: For 78459/78459 co-relation queries the response was YES. [2024-06-27 19:45:51,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1039 events. 601/1039 cut-off events. For 78459/78459 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4993 event pairs, 100 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 7786. Up to 997 conditions per place. [2024-06-27 19:45:51,919 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 206 selfloop transitions, 17 changer transitions 0/225 dead transitions. [2024-06-27 19:45:51,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 225 transitions, 2839 flow [2024-06-27 19:45:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:45:51,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 19:45:51,920 INFO L175 Difference]: Start difference. First operand has 217 places, 211 transitions, 2331 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:45:51,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 225 transitions, 2839 flow [2024-06-27 19:45:52,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 225 transitions, 2741 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:52,105 INFO L231 Difference]: Finished difference. Result has 221 places, 214 transitions, 2316 flow [2024-06-27 19:45:52,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2316, PETRI_PLACES=221, PETRI_TRANSITIONS=214} [2024-06-27 19:45:52,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-27 19:45:52,105 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 214 transitions, 2316 flow [2024-06-27 19:45:52,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:52,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:52,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:45:52,106 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -590993387, now seen corresponding path program 11 times [2024-06-27 19:45:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25806610] [2024-06-27 19:45:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:53,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:53,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25806610] [2024-06-27 19:45:53,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25806610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:53,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856666162] [2024-06-27 19:45:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:53,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:53,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:53,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:53,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 214 transitions, 2316 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:53,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:53,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:53,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:53,580 INFO L124 PetriNetUnfolderBase]: 597/1033 cut-off events. [2024-06-27 19:45:53,581 INFO L125 PetriNetUnfolderBase]: For 76712/76712 co-relation queries the response was YES. [2024-06-27 19:45:53,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7702 conditions, 1033 events. 597/1033 cut-off events. For 76712/76712 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4960 event pairs, 91 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 7593. Up to 923 conditions per place. [2024-06-27 19:45:53,590 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 32 changer transitions 0/231 dead transitions. [2024-06-27 19:45:53,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 231 transitions, 2961 flow [2024-06-27 19:45:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:45:53,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:45:53,591 INFO L175 Difference]: Start difference. First operand has 221 places, 214 transitions, 2316 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:45:53,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 231 transitions, 2961 flow [2024-06-27 19:45:53,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 231 transitions, 2917 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:45:53,787 INFO L231 Difference]: Finished difference. Result has 225 places, 215 transitions, 2362 flow [2024-06-27 19:45:53,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2272, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=225, PETRI_TRANSITIONS=215} [2024-06-27 19:45:53,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-27 19:45:53,787 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 215 transitions, 2362 flow [2024-06-27 19:45:53,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:53,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:53,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:53,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:45:53,788 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:53,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1760576041, now seen corresponding path program 3 times [2024-06-27 19:45:53,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:53,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648527036] [2024-06-27 19:45:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:54,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648527036] [2024-06-27 19:45:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648527036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:54,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:54,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206055196] [2024-06-27 19:45:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:54,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:54,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:54,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:54,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 215 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:54,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:54,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:54,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:55,007 INFO L124 PetriNetUnfolderBase]: 601/1041 cut-off events. [2024-06-27 19:45:55,008 INFO L125 PetriNetUnfolderBase]: For 79159/79159 co-relation queries the response was YES. [2024-06-27 19:45:55,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7815 conditions, 1041 events. 601/1041 cut-off events. For 79159/79159 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5012 event pairs, 96 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 7705. Up to 1006 conditions per place. [2024-06-27 19:45:55,017 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 211 selfloop transitions, 14 changer transitions 0/227 dead transitions. [2024-06-27 19:45:55,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 227 transitions, 2850 flow [2024-06-27 19:45:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:45:55,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 19:45:55,018 INFO L175 Difference]: Start difference. First operand has 225 places, 215 transitions, 2362 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:45:55,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 227 transitions, 2850 flow [2024-06-27 19:45:55,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 227 transitions, 2776 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:55,235 INFO L231 Difference]: Finished difference. Result has 227 places, 216 transitions, 2336 flow [2024-06-27 19:45:55,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2288, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2336, PETRI_PLACES=227, PETRI_TRANSITIONS=216} [2024-06-27 19:45:55,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-27 19:45:55,236 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 216 transitions, 2336 flow [2024-06-27 19:45:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:55,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:55,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:45:55,236 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:55,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1229172601, now seen corresponding path program 4 times [2024-06-27 19:45:55,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:55,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189044502] [2024-06-27 19:45:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189044502] [2024-06-27 19:45:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189044502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:56,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:56,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:56,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348080037] [2024-06-27 19:45:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:56,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:56,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:56,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:56,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 216 transitions, 2336 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:56,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:56,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:56,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:56,509 INFO L124 PetriNetUnfolderBase]: 605/1049 cut-off events. [2024-06-27 19:45:56,509 INFO L125 PetriNetUnfolderBase]: For 81312/81312 co-relation queries the response was YES. [2024-06-27 19:45:56,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7830 conditions, 1049 events. 605/1049 cut-off events. For 81312/81312 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5060 event pairs, 103 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7719. Up to 1019 conditions per place. [2024-06-27 19:45:56,517 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2024-06-27 19:45:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 228 transitions, 2845 flow [2024-06-27 19:45:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:45:56,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 19:45:56,517 INFO L175 Difference]: Start difference. First operand has 227 places, 216 transitions, 2336 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:45:56,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 228 transitions, 2845 flow [2024-06-27 19:45:56,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 228 transitions, 2807 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:45:56,741 INFO L231 Difference]: Finished difference. Result has 229 places, 218 transitions, 2367 flow [2024-06-27 19:45:56,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2367, PETRI_PLACES=229, PETRI_TRANSITIONS=218} [2024-06-27 19:45:56,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-27 19:45:56,741 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 218 transitions, 2367 flow [2024-06-27 19:45:56,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:56,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:56,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:56,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:45:56,742 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:56,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1812502617, now seen corresponding path program 12 times [2024-06-27 19:45:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420498245] [2024-06-27 19:45:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:57,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420498245] [2024-06-27 19:45:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420498245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:57,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103735824] [2024-06-27 19:45:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:57,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 218 transitions, 2367 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:57,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:57,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:57,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:58,364 INFO L124 PetriNetUnfolderBase]: 641/1107 cut-off events. [2024-06-27 19:45:58,364 INFO L125 PetriNetUnfolderBase]: For 97187/97187 co-relation queries the response was YES. [2024-06-27 19:45:58,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1107 events. 641/1107 cut-off events. For 97187/97187 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5392 event pairs, 99 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 8557. Up to 1001 conditions per place. [2024-06-27 19:45:58,373 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 29 changer transitions 0/242 dead transitions. [2024-06-27 19:45:58,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 242 transitions, 3321 flow [2024-06-27 19:45:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:45:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:45:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:45:58,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:45:58,374 INFO L175 Difference]: Start difference. First operand has 229 places, 218 transitions, 2367 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:45:58,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 242 transitions, 3321 flow [2024-06-27 19:45:58,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 242 transitions, 3248 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:45:58,606 INFO L231 Difference]: Finished difference. Result has 230 places, 226 transitions, 2533 flow [2024-06-27 19:45:58,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=230, PETRI_TRANSITIONS=226} [2024-06-27 19:45:58,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 19:45:58,606 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 226 transitions, 2533 flow [2024-06-27 19:45:58,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:58,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:45:58,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:45:58,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:45:58,607 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:45:58,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:45:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash -933597211, now seen corresponding path program 5 times [2024-06-27 19:45:58,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:45:58,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193520233] [2024-06-27 19:45:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:45:58,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:45:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:45:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:45:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:45:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193520233] [2024-06-27 19:45:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193520233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:45:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:45:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:45:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051365150] [2024-06-27 19:45:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:45:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:45:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:45:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:45:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:45:59,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:45:59,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 226 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:45:59,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:45:59,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:45:59,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:45:59,768 INFO L124 PetriNetUnfolderBase]: 638/1102 cut-off events. [2024-06-27 19:45:59,768 INFO L125 PetriNetUnfolderBase]: For 95540/95540 co-relation queries the response was YES. [2024-06-27 19:45:59,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8588 conditions, 1102 events. 638/1102 cut-off events. For 95540/95540 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5369 event pairs, 100 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 8477. Up to 1067 conditions per place. [2024-06-27 19:45:59,777 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 222 selfloop transitions, 13 changer transitions 0/237 dead transitions. [2024-06-27 19:45:59,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 237 transitions, 3027 flow [2024-06-27 19:45:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:45:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:45:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:45:59,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 19:45:59,778 INFO L175 Difference]: Start difference. First operand has 230 places, 226 transitions, 2533 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:45:59,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 237 transitions, 3027 flow [2024-06-27 19:46:00,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 237 transitions, 2937 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 19:46:00,050 INFO L231 Difference]: Finished difference. Result has 234 places, 226 transitions, 2473 flow [2024-06-27 19:46:00,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2473, PETRI_PLACES=234, PETRI_TRANSITIONS=226} [2024-06-27 19:46:00,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-27 19:46:00,050 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 226 transitions, 2473 flow [2024-06-27 19:46:00,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:00,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:00,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:46:00,051 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1465110763, now seen corresponding path program 13 times [2024-06-27 19:46:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:00,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612742485] [2024-06-27 19:46:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:00,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:00,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612742485] [2024-06-27 19:46:00,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612742485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:00,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:00,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871654395] [2024-06-27 19:46:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:00,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:00,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:00,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:00,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:00,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 226 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:00,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:00,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:01,438 INFO L124 PetriNetUnfolderBase]: 634/1096 cut-off events. [2024-06-27 19:46:01,439 INFO L125 PetriNetUnfolderBase]: For 93713/93713 co-relation queries the response was YES. [2024-06-27 19:46:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8350 conditions, 1096 events. 634/1096 cut-off events. For 93713/93713 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5335 event pairs, 98 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 8237. Up to 1030 conditions per place. [2024-06-27 19:46:01,448 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2024-06-27 19:46:01,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 240 transitions, 2987 flow [2024-06-27 19:46:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:46:01,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 19:46:01,450 INFO L175 Difference]: Start difference. First operand has 234 places, 226 transitions, 2473 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:46:01,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 240 transitions, 2987 flow [2024-06-27 19:46:01,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 240 transitions, 2922 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:01,690 INFO L231 Difference]: Finished difference. Result has 237 places, 227 transitions, 2478 flow [2024-06-27 19:46:01,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2478, PETRI_PLACES=237, PETRI_TRANSITIONS=227} [2024-06-27 19:46:01,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 19:46:01,691 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 227 transitions, 2478 flow [2024-06-27 19:46:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:01,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:01,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:46:01,692 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:01,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1820776827, now seen corresponding path program 14 times [2024-06-27 19:46:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:01,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734891720] [2024-06-27 19:46:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:02,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734891720] [2024-06-27 19:46:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734891720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:02,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:02,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:02,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074825322] [2024-06-27 19:46:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:02,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:02,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:02,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 227 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:02,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:03,295 INFO L124 PetriNetUnfolderBase]: 636/1100 cut-off events. [2024-06-27 19:46:03,295 INFO L125 PetriNetUnfolderBase]: For 95220/95220 co-relation queries the response was YES. [2024-06-27 19:46:03,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8304 conditions, 1100 events. 636/1100 cut-off events. For 95220/95220 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5352 event pairs, 101 based on Foata normal form. 4/1102 useless extension candidates. Maximal degree in co-relation 8189. Up to 1047 conditions per place. [2024-06-27 19:46:03,305 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 17 changer transitions 0/243 dead transitions. [2024-06-27 19:46:03,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 243 transitions, 3046 flow [2024-06-27 19:46:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:46:03,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:46:03,305 INFO L175 Difference]: Start difference. First operand has 237 places, 227 transitions, 2478 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:46:03,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 243 transitions, 3046 flow [2024-06-27 19:46:03,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 243 transitions, 2953 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:03,559 INFO L231 Difference]: Finished difference. Result has 238 places, 229 transitions, 2472 flow [2024-06-27 19:46:03,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2472, PETRI_PLACES=238, PETRI_TRANSITIONS=229} [2024-06-27 19:46:03,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-27 19:46:03,560 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 229 transitions, 2472 flow [2024-06-27 19:46:03,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:03,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:03,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:03,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:46:03,560 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:03,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -597428987, now seen corresponding path program 15 times [2024-06-27 19:46:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091590889] [2024-06-27 19:46:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:04,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091590889] [2024-06-27 19:46:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091590889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:04,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:04,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748821416] [2024-06-27 19:46:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:04,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:04,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:04,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:04,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 229 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:04,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:04,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:04,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:04,963 INFO L124 PetriNetUnfolderBase]: 642/1110 cut-off events. [2024-06-27 19:46:04,964 INFO L125 PetriNetUnfolderBase]: For 94246/94246 co-relation queries the response was YES. [2024-06-27 19:46:04,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8324 conditions, 1110 events. 642/1110 cut-off events. For 94246/94246 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5434 event pairs, 89 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 8210. Up to 950 conditions per place. [2024-06-27 19:46:04,973 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 48 changer transitions 0/245 dead transitions. [2024-06-27 19:46:04,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 3176 flow [2024-06-27 19:46:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:46:04,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:46:04,974 INFO L175 Difference]: Start difference. First operand has 238 places, 229 transitions, 2472 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:46:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 3176 flow [2024-06-27 19:46:05,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 245 transitions, 3111 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:05,221 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2556 flow [2024-06-27 19:46:05,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-27 19:46:05,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 19:46:05,222 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2556 flow [2024-06-27 19:46:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:05,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:05,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:46:05,222 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1584417017, now seen corresponding path program 6 times [2024-06-27 19:46:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:05,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436254299] [2024-06-27 19:46:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:06,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436254299] [2024-06-27 19:46:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436254299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:46:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049010996] [2024-06-27 19:46:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:46:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:06,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:46:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:46:06,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:06,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2556 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:06,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:06,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:06,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:06,454 INFO L124 PetriNetUnfolderBase]: 639/1105 cut-off events. [2024-06-27 19:46:06,454 INFO L125 PetriNetUnfolderBase]: For 91292/91292 co-relation queries the response was YES. [2024-06-27 19:46:06,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8221 conditions, 1105 events. 639/1105 cut-off events. For 91292/91292 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5376 event pairs, 110 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8106. Up to 1075 conditions per place. [2024-06-27 19:46:06,464 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 223 selfloop transitions, 15 changer transitions 0/240 dead transitions. [2024-06-27 19:46:06,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 240 transitions, 3052 flow [2024-06-27 19:46:06,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:46:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:46:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:46:06,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 19:46:06,465 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2556 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:46:06,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 240 transitions, 3052 flow [2024-06-27 19:46:06,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 240 transitions, 2833 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:06,722 INFO L231 Difference]: Finished difference. Result has 240 places, 231 transitions, 2371 flow [2024-06-27 19:46:06,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2371, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2024-06-27 19:46:06,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 19:46:06,722 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 2371 flow [2024-06-27 19:46:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:06,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:06,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:06,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:46:06,723 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:06,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2097279945, now seen corresponding path program 16 times [2024-06-27 19:46:06,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393509053] [2024-06-27 19:46:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393509053] [2024-06-27 19:46:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393509053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521525477] [2024-06-27 19:46:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:07,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:07,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 2371 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:07,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:07,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:08,180 INFO L124 PetriNetUnfolderBase]: 645/1115 cut-off events. [2024-06-27 19:46:08,181 INFO L125 PetriNetUnfolderBase]: For 93369/93369 co-relation queries the response was YES. [2024-06-27 19:46:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 1115 events. 645/1115 cut-off events. For 93369/93369 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5465 event pairs, 92 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 7926. Up to 951 conditions per place. [2024-06-27 19:46:08,191 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 47 changer transitions 0/247 dead transitions. [2024-06-27 19:46:08,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 247 transitions, 3075 flow [2024-06-27 19:46:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:46:08,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 19:46:08,191 INFO L175 Difference]: Start difference. First operand has 240 places, 231 transitions, 2371 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:46:08,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 247 transitions, 3075 flow [2024-06-27 19:46:08,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 247 transitions, 2961 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 19:46:08,419 INFO L231 Difference]: Finished difference. Result has 240 places, 233 transitions, 2396 flow [2024-06-27 19:46:08,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2396, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2024-06-27 19:46:08,419 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 19:46:08,419 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 2396 flow [2024-06-27 19:46:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:08,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:08,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:08,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:46:08,420 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:08,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1099431381, now seen corresponding path program 17 times [2024-06-27 19:46:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238402825] [2024-06-27 19:46:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:09,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238402825] [2024-06-27 19:46:09,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238402825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:09,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:09,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123302067] [2024-06-27 19:46:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:09,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:09,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:09,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 2396 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:09,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:09,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:09,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:09,753 INFO L124 PetriNetUnfolderBase]: 669/1155 cut-off events. [2024-06-27 19:46:09,753 INFO L125 PetriNetUnfolderBase]: For 106029/106029 co-relation queries the response was YES. [2024-06-27 19:46:09,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1155 events. 669/1155 cut-off events. For 106029/106029 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5700 event pairs, 98 based on Foata normal form. 4/1157 useless extension candidates. Maximal degree in co-relation 8394. Up to 879 conditions per place. [2024-06-27 19:46:09,762 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 58 changer transitions 0/256 dead transitions. [2024-06-27 19:46:09,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 3516 flow [2024-06-27 19:46:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 19:46:09,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 19:46:09,762 INFO L175 Difference]: Start difference. First operand has 240 places, 233 transitions, 2396 flow. Second operand 10 states and 126 transitions. [2024-06-27 19:46:09,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 3516 flow [2024-06-27 19:46:10,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 256 transitions, 3384 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:10,051 INFO L231 Difference]: Finished difference. Result has 243 places, 239 transitions, 2530 flow [2024-06-27 19:46:10,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2530, PETRI_PLACES=243, PETRI_TRANSITIONS=239} [2024-06-27 19:46:10,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-27 19:46:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 239 transitions, 2530 flow [2024-06-27 19:46:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:10,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:10,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:46:10,051 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:10,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2097273249, now seen corresponding path program 3 times [2024-06-27 19:46:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354494179] [2024-06-27 19:46:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:10,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:10,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354494179] [2024-06-27 19:46:10,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354494179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:10,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:10,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:46:10,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518237894] [2024-06-27 19:46:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:46:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:46:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:46:10,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:10,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 239 transitions, 2530 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:10,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:10,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:10,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:11,219 INFO L124 PetriNetUnfolderBase]: 665/1148 cut-off events. [2024-06-27 19:46:11,219 INFO L125 PetriNetUnfolderBase]: For 99221/99221 co-relation queries the response was YES. [2024-06-27 19:46:11,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8381 conditions, 1148 events. 665/1148 cut-off events. For 99221/99221 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5640 event pairs, 101 based on Foata normal form. 1/1147 useless extension candidates. Maximal degree in co-relation 8267. Up to 1020 conditions per place. [2024-06-27 19:46:11,228 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 41 changer transitions 0/249 dead transitions. [2024-06-27 19:46:11,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 249 transitions, 3046 flow [2024-06-27 19:46:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:46:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:46:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:46:11,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:46:11,229 INFO L175 Difference]: Start difference. First operand has 243 places, 239 transitions, 2530 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:46:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 249 transitions, 3046 flow [2024-06-27 19:46:11,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 2869 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:11,495 INFO L231 Difference]: Finished difference. Result has 245 places, 239 transitions, 2441 flow [2024-06-27 19:46:11,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2441, PETRI_PLACES=245, PETRI_TRANSITIONS=239} [2024-06-27 19:46:11,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-27 19:46:11,496 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 239 transitions, 2441 flow [2024-06-27 19:46:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:11,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:11,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:11,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:46:11,496 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:11,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1959479655, now seen corresponding path program 18 times [2024-06-27 19:46:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:11,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990753320] [2024-06-27 19:46:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:11,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:12,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990753320] [2024-06-27 19:46:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990753320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:12,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:12,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544006699] [2024-06-27 19:46:12,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:12,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:12,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:12,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 239 transitions, 2441 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:12,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:12,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:12,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:12,987 INFO L124 PetriNetUnfolderBase]: 681/1174 cut-off events. [2024-06-27 19:46:12,987 INFO L125 PetriNetUnfolderBase]: For 109397/109397 co-relation queries the response was YES. [2024-06-27 19:46:12,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8560 conditions, 1174 events. 681/1174 cut-off events. For 109397/109397 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5814 event pairs, 85 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 8446. Up to 1026 conditions per place. [2024-06-27 19:46:12,998 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 222 selfloop transitions, 45 changer transitions 0/269 dead transitions. [2024-06-27 19:46:12,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 269 transitions, 3462 flow [2024-06-27 19:46:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:46:12,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 19:46:12,998 INFO L175 Difference]: Start difference. First operand has 245 places, 239 transitions, 2441 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:46:12,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 269 transitions, 3462 flow [2024-06-27 19:46:13,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 269 transitions, 3315 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:13,285 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 2538 flow [2024-06-27 19:46:13,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2538, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2024-06-27 19:46:13,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-27 19:46:13,286 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 2538 flow [2024-06-27 19:46:13,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:13,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:13,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:46:13,286 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash -200609356, now seen corresponding path program 1 times [2024-06-27 19:46:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776108194] [2024-06-27 19:46:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776108194] [2024-06-27 19:46:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776108194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:14,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808705471] [2024-06-27 19:46:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:14,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:14,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 2538 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:14,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:14,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:14,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:14,998 INFO L124 PetriNetUnfolderBase]: 692/1195 cut-off events. [2024-06-27 19:46:14,998 INFO L125 PetriNetUnfolderBase]: For 115069/115069 co-relation queries the response was YES. [2024-06-27 19:46:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 1195 events. 692/1195 cut-off events. For 115069/115069 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5939 event pairs, 82 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 8693. Up to 1060 conditions per place. [2024-06-27 19:46:15,008 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 26 changer transitions 0/270 dead transitions. [2024-06-27 19:46:15,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 270 transitions, 3304 flow [2024-06-27 19:46:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:46:15,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 19:46:15,009 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 2538 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:46:15,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 270 transitions, 3304 flow [2024-06-27 19:46:15,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 270 transitions, 3191 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:15,308 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 2503 flow [2024-06-27 19:46:15,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2503, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2024-06-27 19:46:15,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 19:46:15,308 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 2503 flow [2024-06-27 19:46:15,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:15,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:46:15,309 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:15,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash -198735406, now seen corresponding path program 2 times [2024-06-27 19:46:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473122716] [2024-06-27 19:46:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:16,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473122716] [2024-06-27 19:46:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473122716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272771700] [2024-06-27 19:46:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:16,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:16,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:16,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:16,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 2503 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:16,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:16,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:16,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:16,793 INFO L124 PetriNetUnfolderBase]: 696/1203 cut-off events. [2024-06-27 19:46:16,794 INFO L125 PetriNetUnfolderBase]: For 117734/117734 co-relation queries the response was YES. [2024-06-27 19:46:16,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8785 conditions, 1203 events. 696/1203 cut-off events. For 117734/117734 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6002 event pairs, 96 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8672. Up to 1098 conditions per place. [2024-06-27 19:46:16,805 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 241 selfloop transitions, 26 changer transitions 0/269 dead transitions. [2024-06-27 19:46:16,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 269 transitions, 3257 flow [2024-06-27 19:46:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:46:16,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 19:46:16,806 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 2503 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:46:16,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 269 transitions, 3257 flow [2024-06-27 19:46:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 269 transitions, 3208 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:17,088 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 2523 flow [2024-06-27 19:46:17,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2024-06-27 19:46:17,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 19:46:17,089 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 2523 flow [2024-06-27 19:46:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:17,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:17,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:17,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:46:17,089 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:17,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -198731686, now seen corresponding path program 3 times [2024-06-27 19:46:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:17,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229027537] [2024-06-27 19:46:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:18,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229027537] [2024-06-27 19:46:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229027537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:18,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:18,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711368431] [2024-06-27 19:46:18,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:18,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:18,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:18,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 2523 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:18,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:18,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:18,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:18,476 INFO L124 PetriNetUnfolderBase]: 693/1198 cut-off events. [2024-06-27 19:46:18,477 INFO L125 PetriNetUnfolderBase]: For 115164/115164 co-relation queries the response was YES. [2024-06-27 19:46:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8662 conditions, 1198 events. 693/1198 cut-off events. For 115164/115164 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6007 event pairs, 97 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8547. Up to 1120 conditions per place. [2024-06-27 19:46:18,490 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 26 changer transitions 0/267 dead transitions. [2024-06-27 19:46:18,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 267 transitions, 3105 flow [2024-06-27 19:46:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:46:18,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:46:18,492 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 2523 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:46:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 267 transitions, 3105 flow [2024-06-27 19:46:18,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 267 transitions, 3047 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:18,781 INFO L231 Difference]: Finished difference. Result has 257 places, 249 transitions, 2522 flow [2024-06-27 19:46:18,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2522, PETRI_PLACES=257, PETRI_TRANSITIONS=249} [2024-06-27 19:46:18,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 19:46:18,781 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 249 transitions, 2522 flow [2024-06-27 19:46:18,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:18,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:18,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:46:18,782 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:18,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:18,782 INFO L85 PathProgramCache]: Analyzing trace with hash -198731531, now seen corresponding path program 1 times [2024-06-27 19:46:18,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:18,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105121518] [2024-06-27 19:46:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105121518] [2024-06-27 19:46:19,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105121518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:19,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:19,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:19,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970410125] [2024-06-27 19:46:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:19,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:19,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:20,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:20,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 249 transitions, 2522 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:20,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:20,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:20,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:20,654 INFO L124 PetriNetUnfolderBase]: 709/1224 cut-off events. [2024-06-27 19:46:20,654 INFO L125 PetriNetUnfolderBase]: For 124622/124622 co-relation queries the response was YES. [2024-06-27 19:46:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9042 conditions, 1224 events. 709/1224 cut-off events. For 124622/124622 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6154 event pairs, 96 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 8926. Up to 1129 conditions per place. [2024-06-27 19:46:20,665 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 30 changer transitions 0/279 dead transitions. [2024-06-27 19:46:20,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 279 transitions, 3398 flow [2024-06-27 19:46:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:46:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:46:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 19:46:20,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:46:20,666 INFO L175 Difference]: Start difference. First operand has 257 places, 249 transitions, 2522 flow. Second operand 12 states and 144 transitions. [2024-06-27 19:46:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 279 transitions, 3398 flow [2024-06-27 19:46:20,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 279 transitions, 3342 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:20,990 INFO L231 Difference]: Finished difference. Result has 260 places, 253 transitions, 2627 flow [2024-06-27 19:46:20,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2627, PETRI_PLACES=260, PETRI_TRANSITIONS=253} [2024-06-27 19:46:20,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-27 19:46:20,991 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 253 transitions, 2627 flow [2024-06-27 19:46:20,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:20,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:20,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:20,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:46:20,991 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:20,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash 528932741, now seen corresponding path program 2 times [2024-06-27 19:46:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746398301] [2024-06-27 19:46:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746398301] [2024-06-27 19:46:22,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746398301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:22,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:22,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035438410] [2024-06-27 19:46:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:22,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:22,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:22,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:22,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 253 transitions, 2627 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:22,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:22,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:22,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:22,851 INFO L124 PetriNetUnfolderBase]: 705/1218 cut-off events. [2024-06-27 19:46:22,852 INFO L125 PetriNetUnfolderBase]: For 121749/121749 co-relation queries the response was YES. [2024-06-27 19:46:22,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 1218 events. 705/1218 cut-off events. For 121749/121749 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6113 event pairs, 96 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 8802. Up to 1126 conditions per place. [2024-06-27 19:46:22,863 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 30 changer transitions 0/271 dead transitions. [2024-06-27 19:46:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 271 transitions, 3217 flow [2024-06-27 19:46:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:46:22,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 19:46:22,864 INFO L175 Difference]: Start difference. First operand has 260 places, 253 transitions, 2627 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:46:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 271 transitions, 3217 flow [2024-06-27 19:46:23,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 3109 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:23,162 INFO L231 Difference]: Finished difference. Result has 262 places, 253 transitions, 2589 flow [2024-06-27 19:46:23,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2589, PETRI_PLACES=262, PETRI_TRANSITIONS=253} [2024-06-27 19:46:23,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-27 19:46:23,163 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 253 transitions, 2589 flow [2024-06-27 19:46:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:23,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:23,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:46:23,163 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:23,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 200500455, now seen corresponding path program 1 times [2024-06-27 19:46:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118983685] [2024-06-27 19:46:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118983685] [2024-06-27 19:46:24,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118983685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:24,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:24,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:24,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032483165] [2024-06-27 19:46:24,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:24,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:24,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:24,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 253 transitions, 2589 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:24,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:24,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:24,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:24,934 INFO L124 PetriNetUnfolderBase]: 709/1226 cut-off events. [2024-06-27 19:46:24,934 INFO L125 PetriNetUnfolderBase]: For 124639/124639 co-relation queries the response was YES. [2024-06-27 19:46:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8934 conditions, 1226 events. 709/1226 cut-off events. For 124639/124639 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6243 event pairs, 72 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 8815. Up to 1031 conditions per place. [2024-06-27 19:46:24,945 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 213 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-27 19:46:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 272 transitions, 3181 flow [2024-06-27 19:46:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:46:24,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 19:46:24,946 INFO L175 Difference]: Start difference. First operand has 262 places, 253 transitions, 2589 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:46:24,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 272 transitions, 3181 flow [2024-06-27 19:46:25,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 272 transitions, 3116 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:25,283 INFO L231 Difference]: Finished difference. Result has 263 places, 254 transitions, 2650 flow [2024-06-27 19:46:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2650, PETRI_PLACES=263, PETRI_TRANSITIONS=254} [2024-06-27 19:46:25,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-27 19:46:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 254 transitions, 2650 flow [2024-06-27 19:46:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:25,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:25,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:46:25,284 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:25,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash 672817536, now seen corresponding path program 4 times [2024-06-27 19:46:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508558942] [2024-06-27 19:46:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508558942] [2024-06-27 19:46:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508558942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:26,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:26,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117059385] [2024-06-27 19:46:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:26,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:26,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 254 transitions, 2650 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:26,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:26,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:26,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:26,752 INFO L124 PetriNetUnfolderBase]: 713/1234 cut-off events. [2024-06-27 19:46:26,752 INFO L125 PetriNetUnfolderBase]: For 124777/124777 co-relation queries the response was YES. [2024-06-27 19:46:26,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9055 conditions, 1234 events. 713/1234 cut-off events. For 124777/124777 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6244 event pairs, 80 based on Foata normal form. 2/1234 useless extension candidates. Maximal degree in co-relation 8936. Up to 895 conditions per place. [2024-06-27 19:46:26,763 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 96 changer transitions 0/272 dead transitions. [2024-06-27 19:46:26,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 272 transitions, 3246 flow [2024-06-27 19:46:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:46:26,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 19:46:26,764 INFO L175 Difference]: Start difference. First operand has 263 places, 254 transitions, 2650 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:46:26,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 272 transitions, 3246 flow [2024-06-27 19:46:27,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 272 transitions, 3130 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:27,178 INFO L231 Difference]: Finished difference. Result has 265 places, 255 transitions, 2744 flow [2024-06-27 19:46:27,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2744, PETRI_PLACES=265, PETRI_TRANSITIONS=255} [2024-06-27 19:46:27,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-27 19:46:27,178 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 255 transitions, 2744 flow [2024-06-27 19:46:27,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:27,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:27,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:27,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:46:27,179 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:27,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:27,179 INFO L85 PathProgramCache]: Analyzing trace with hash 200285129, now seen corresponding path program 3 times [2024-06-27 19:46:27,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:27,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633735179] [2024-06-27 19:46:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:28,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633735179] [2024-06-27 19:46:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633735179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:28,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:28,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:28,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741137686] [2024-06-27 19:46:28,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:28,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:28,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:28,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:28,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:28,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 255 transitions, 2744 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:28,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:28,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:28,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:29,109 INFO L124 PetriNetUnfolderBase]: 739/1276 cut-off events. [2024-06-27 19:46:29,110 INFO L125 PetriNetUnfolderBase]: For 142147/142147 co-relation queries the response was YES. [2024-06-27 19:46:29,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9830 conditions, 1276 events. 739/1276 cut-off events. For 142147/142147 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6478 event pairs, 79 based on Foata normal form. 2/1276 useless extension candidates. Maximal degree in co-relation 9710. Up to 579 conditions per place. [2024-06-27 19:46:29,122 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 128 changer transitions 0/285 dead transitions. [2024-06-27 19:46:29,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 285 transitions, 4050 flow [2024-06-27 19:46:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 19:46:29,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 19:46:29,124 INFO L175 Difference]: Start difference. First operand has 265 places, 255 transitions, 2744 flow. Second operand 10 states and 137 transitions. [2024-06-27 19:46:29,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 285 transitions, 4050 flow [2024-06-27 19:46:29,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 285 transitions, 3850 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:29,518 INFO L231 Difference]: Finished difference. Result has 267 places, 263 transitions, 3012 flow [2024-06-27 19:46:29,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3012, PETRI_PLACES=267, PETRI_TRANSITIONS=263} [2024-06-27 19:46:29,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 19:46:29,518 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 263 transitions, 3012 flow [2024-06-27 19:46:29,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:29,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:29,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:29,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:46:29,519 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:29,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash 200492519, now seen corresponding path program 4 times [2024-06-27 19:46:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822385966] [2024-06-27 19:46:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822385966] [2024-06-27 19:46:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822385966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:30,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:30,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694976203] [2024-06-27 19:46:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:30,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:30,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:30,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 263 transitions, 3012 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:30,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:30,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:30,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:31,528 INFO L124 PetriNetUnfolderBase]: 745/1286 cut-off events. [2024-06-27 19:46:31,528 INFO L125 PetriNetUnfolderBase]: For 147545/147545 co-relation queries the response was YES. [2024-06-27 19:46:31,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10105 conditions, 1286 events. 745/1286 cut-off events. For 147545/147545 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6603 event pairs, 68 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 9984. Up to 881 conditions per place. [2024-06-27 19:46:31,541 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 103 changer transitions 0/285 dead transitions. [2024-06-27 19:46:31,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 285 transitions, 3682 flow [2024-06-27 19:46:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:46:31,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 19:46:31,542 INFO L175 Difference]: Start difference. First operand has 267 places, 263 transitions, 3012 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:46:31,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 285 transitions, 3682 flow [2024-06-27 19:46:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 285 transitions, 3513 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 19:46:31,940 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 3112 flow [2024-06-27 19:46:31,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3112, PETRI_PLACES=273, PETRI_TRANSITIONS=265} [2024-06-27 19:46:31,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 19:46:31,940 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 3112 flow [2024-06-27 19:46:31,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:31,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:31,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:31,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:46:31,941 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:31,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 672823271, now seen corresponding path program 5 times [2024-06-27 19:46:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061972037] [2024-06-27 19:46:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061972037] [2024-06-27 19:46:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061972037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:33,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:33,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794983222] [2024-06-27 19:46:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:33,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:33,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:33,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 265 transitions, 3112 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:33,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:33,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:34,021 INFO L124 PetriNetUnfolderBase]: 753/1300 cut-off events. [2024-06-27 19:46:34,021 INFO L125 PetriNetUnfolderBase]: For 138815/138815 co-relation queries the response was YES. [2024-06-27 19:46:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 1300 events. 753/1300 cut-off events. For 138815/138815 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6640 event pairs, 74 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 9906. Up to 569 conditions per place. [2024-06-27 19:46:34,031 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 159 selfloop transitions, 136 changer transitions 0/297 dead transitions. [2024-06-27 19:46:34,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 297 transitions, 4140 flow [2024-06-27 19:46:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 19:46:34,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 19:46:34,032 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 3112 flow. Second operand 11 states and 147 transitions. [2024-06-27 19:46:34,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 297 transitions, 4140 flow [2024-06-27 19:46:34,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 297 transitions, 3893 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:34,425 INFO L231 Difference]: Finished difference. Result has 278 places, 272 transitions, 3310 flow [2024-06-27 19:46:34,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3310, PETRI_PLACES=278, PETRI_TRANSITIONS=272} [2024-06-27 19:46:34,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-27 19:46:34,425 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 272 transitions, 3310 flow [2024-06-27 19:46:34,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:34,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:34,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:34,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:46:34,426 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:34,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 194774724, now seen corresponding path program 5 times [2024-06-27 19:46:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082914216] [2024-06-27 19:46:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:34,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:35,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082914216] [2024-06-27 19:46:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082914216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:35,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:35,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514410061] [2024-06-27 19:46:35,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:35,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:35,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 272 transitions, 3310 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:35,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:35,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:35,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:36,306 INFO L124 PetriNetUnfolderBase]: 764/1321 cut-off events. [2024-06-27 19:46:36,307 INFO L125 PetriNetUnfolderBase]: For 150163/150163 co-relation queries the response was YES. [2024-06-27 19:46:36,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10830 conditions, 1321 events. 764/1321 cut-off events. For 150163/150163 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6790 event pairs, 84 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 10704. Up to 1048 conditions per place. [2024-06-27 19:46:36,321 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 79 changer transitions 0/294 dead transitions. [2024-06-27 19:46:36,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 4142 flow [2024-06-27 19:46:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:46:36,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 19:46:36,322 INFO L175 Difference]: Start difference. First operand has 278 places, 272 transitions, 3310 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:46:36,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 4142 flow [2024-06-27 19:46:36,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 294 transitions, 3974 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:36,728 INFO L231 Difference]: Finished difference. Result has 282 places, 274 transitions, 3334 flow [2024-06-27 19:46:36,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3334, PETRI_PLACES=282, PETRI_TRANSITIONS=274} [2024-06-27 19:46:36,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-27 19:46:36,729 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 274 transitions, 3334 flow [2024-06-27 19:46:36,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:36,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:36,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:36,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:46:36,729 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash -832980902, now seen corresponding path program 6 times [2024-06-27 19:46:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53676457] [2024-06-27 19:46:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53676457] [2024-06-27 19:46:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53676457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:38,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391752221] [2024-06-27 19:46:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:38,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:38,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:38,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 274 transitions, 3334 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:38,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:38,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:38,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:38,952 INFO L124 PetriNetUnfolderBase]: 771/1334 cut-off events. [2024-06-27 19:46:38,952 INFO L125 PetriNetUnfolderBase]: For 154073/154073 co-relation queries the response was YES. [2024-06-27 19:46:38,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10806 conditions, 1334 events. 771/1334 cut-off events. For 154073/154073 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6878 event pairs, 83 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 10678. Up to 1058 conditions per place. [2024-06-27 19:46:38,966 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 211 selfloop transitions, 85 changer transitions 0/298 dead transitions. [2024-06-27 19:46:38,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 298 transitions, 4040 flow [2024-06-27 19:46:38,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:46:38,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 19:46:38,967 INFO L175 Difference]: Start difference. First operand has 282 places, 274 transitions, 3334 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:46:38,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 298 transitions, 4040 flow [2024-06-27 19:46:39,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 298 transitions, 3959 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:46:39,390 INFO L231 Difference]: Finished difference. Result has 288 places, 279 transitions, 3543 flow [2024-06-27 19:46:39,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3543, PETRI_PLACES=288, PETRI_TRANSITIONS=279} [2024-06-27 19:46:39,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-27 19:46:39,391 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 279 transitions, 3543 flow [2024-06-27 19:46:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:39,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:39,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:46:39,391 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:39,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -832980747, now seen corresponding path program 6 times [2024-06-27 19:46:39,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:39,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118733908] [2024-06-27 19:46:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:40,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:40,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118733908] [2024-06-27 19:46:40,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118733908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:40,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:46:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621902803] [2024-06-27 19:46:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:46:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:46:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:46:40,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:40,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 279 transitions, 3543 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:40,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:40,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:40,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:40,879 INFO L124 PetriNetUnfolderBase]: 777/1344 cut-off events. [2024-06-27 19:46:40,879 INFO L125 PetriNetUnfolderBase]: For 158323/158323 co-relation queries the response was YES. [2024-06-27 19:46:40,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11129 conditions, 1344 events. 777/1344 cut-off events. For 158323/158323 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6973 event pairs, 79 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 11000. Up to 639 conditions per place. [2024-06-27 19:46:40,894 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 131 changer transitions 0/303 dead transitions. [2024-06-27 19:46:40,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 303 transitions, 4589 flow [2024-06-27 19:46:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 19:46:40,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483870967741935 [2024-06-27 19:46:40,895 INFO L175 Difference]: Start difference. First operand has 288 places, 279 transitions, 3543 flow. Second operand 10 states and 139 transitions. [2024-06-27 19:46:40,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 303 transitions, 4589 flow [2024-06-27 19:46:41,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 303 transitions, 4461 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:41,350 INFO L231 Difference]: Finished difference. Result has 291 places, 281 transitions, 3724 flow [2024-06-27 19:46:41,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3724, PETRI_PLACES=291, PETRI_TRANSITIONS=281} [2024-06-27 19:46:41,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-27 19:46:41,351 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 281 transitions, 3724 flow [2024-06-27 19:46:41,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:41,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:41,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:41,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:46:41,351 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:41,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash -832831017, now seen corresponding path program 7 times [2024-06-27 19:46:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:41,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119739220] [2024-06-27 19:46:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119739220] [2024-06-27 19:46:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119739220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:42,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203416361] [2024-06-27 19:46:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:42,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:42,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:42,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 281 transitions, 3724 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:42,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:43,382 INFO L124 PetriNetUnfolderBase]: 773/1338 cut-off events. [2024-06-27 19:46:43,383 INFO L125 PetriNetUnfolderBase]: For 156253/156253 co-relation queries the response was YES. [2024-06-27 19:46:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11148 conditions, 1338 events. 773/1338 cut-off events. For 156253/156253 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6955 event pairs, 67 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 11018. Up to 933 conditions per place. [2024-06-27 19:46:43,397 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 200 selfloop transitions, 100 changer transitions 0/302 dead transitions. [2024-06-27 19:46:43,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 302 transitions, 4388 flow [2024-06-27 19:46:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:46:43,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-27 19:46:43,398 INFO L175 Difference]: Start difference. First operand has 291 places, 281 transitions, 3724 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:46:43,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 302 transitions, 4388 flow [2024-06-27 19:46:43,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 302 transitions, 4061 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:43,832 INFO L231 Difference]: Finished difference. Result has 293 places, 281 transitions, 3602 flow [2024-06-27 19:46:43,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3602, PETRI_PLACES=293, PETRI_TRANSITIONS=281} [2024-06-27 19:46:43,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-27 19:46:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 281 transitions, 3602 flow [2024-06-27 19:46:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:43,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:43,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:46:43,833 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:43,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 194922594, now seen corresponding path program 7 times [2024-06-27 19:46:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760907440] [2024-06-27 19:46:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760907440] [2024-06-27 19:46:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760907440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287068201] [2024-06-27 19:46:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:44,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:44,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 281 transitions, 3602 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:44,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:44,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:44,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:45,381 INFO L124 PetriNetUnfolderBase]: 770/1333 cut-off events. [2024-06-27 19:46:45,381 INFO L125 PetriNetUnfolderBase]: For 147123/147123 co-relation queries the response was YES. [2024-06-27 19:46:45,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 1333 events. 770/1333 cut-off events. For 147123/147123 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6901 event pairs, 84 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 10656. Up to 1091 conditions per place. [2024-06-27 19:46:45,395 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 223 selfloop transitions, 74 changer transitions 0/299 dead transitions. [2024-06-27 19:46:45,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 299 transitions, 4246 flow [2024-06-27 19:46:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:46:45,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 19:46:45,396 INFO L175 Difference]: Start difference. First operand has 293 places, 281 transitions, 3602 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:46:45,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 299 transitions, 4246 flow [2024-06-27 19:46:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 299 transitions, 4031 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 19:46:45,823 INFO L231 Difference]: Finished difference. Result has 294 places, 281 transitions, 3539 flow [2024-06-27 19:46:45,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3539, PETRI_PLACES=294, PETRI_TRANSITIONS=281} [2024-06-27 19:46:45,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-27 19:46:45,824 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 281 transitions, 3539 flow [2024-06-27 19:46:45,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:45,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:45,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:46:45,824 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:45,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1234075977, now seen corresponding path program 8 times [2024-06-27 19:46:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:45,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042680354] [2024-06-27 19:46:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:45,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:47,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042680354] [2024-06-27 19:46:47,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042680354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:47,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107191802] [2024-06-27 19:46:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:47,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:47,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:47,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:47,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 281 transitions, 3539 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:47,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:47,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:47,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:47,893 INFO L124 PetriNetUnfolderBase]: 782/1353 cut-off events. [2024-06-27 19:46:47,893 INFO L125 PetriNetUnfolderBase]: For 158214/158214 co-relation queries the response was YES. [2024-06-27 19:46:47,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10877 conditions, 1353 events. 782/1353 cut-off events. For 158214/158214 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7030 event pairs, 74 based on Foata normal form. 4/1355 useless extension candidates. Maximal degree in co-relation 10746. Up to 1182 conditions per place. [2024-06-27 19:46:47,907 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 248 selfloop transitions, 53 changer transitions 0/303 dead transitions. [2024-06-27 19:46:47,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 303 transitions, 4281 flow [2024-06-27 19:46:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:46:47,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 19:46:47,908 INFO L175 Difference]: Start difference. First operand has 294 places, 281 transitions, 3539 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:46:47,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 303 transitions, 4281 flow [2024-06-27 19:46:48,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 303 transitions, 4118 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:46:48,362 INFO L231 Difference]: Finished difference. Result has 295 places, 285 transitions, 3586 flow [2024-06-27 19:46:48,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3586, PETRI_PLACES=295, PETRI_TRANSITIONS=285} [2024-06-27 19:46:48,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-27 19:46:48,363 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 285 transitions, 3586 flow [2024-06-27 19:46:48,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:48,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:48,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:48,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:46:48,364 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:48,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1241695033, now seen corresponding path program 2 times [2024-06-27 19:46:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268419552] [2024-06-27 19:46:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:49,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268419552] [2024-06-27 19:46:49,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268419552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:49,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826652657] [2024-06-27 19:46:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:49,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:49,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 285 transitions, 3586 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:49,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:49,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:50,336 INFO L124 PetriNetUnfolderBase]: 786/1361 cut-off events. [2024-06-27 19:46:50,337 INFO L125 PetriNetUnfolderBase]: For 153685/153685 co-relation queries the response was YES. [2024-06-27 19:46:50,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10927 conditions, 1361 events. 786/1361 cut-off events. For 153685/153685 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7094 event pairs, 79 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 10795. Up to 1257 conditions per place. [2024-06-27 19:46:50,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 263 selfloop transitions, 37 changer transitions 0/302 dead transitions. [2024-06-27 19:46:50,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 302 transitions, 4246 flow [2024-06-27 19:46:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:46:50,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:46:50,350 INFO L175 Difference]: Start difference. First operand has 295 places, 285 transitions, 3586 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:46:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 302 transitions, 4246 flow [2024-06-27 19:46:50,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 302 transitions, 4088 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:46:50,798 INFO L231 Difference]: Finished difference. Result has 297 places, 287 transitions, 3536 flow [2024-06-27 19:46:50,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3536, PETRI_PLACES=297, PETRI_TRANSITIONS=287} [2024-06-27 19:46:50,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 19:46:50,798 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 287 transitions, 3536 flow [2024-06-27 19:46:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:50,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:50,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:46:50,798 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:50,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 7009106, now seen corresponding path program 8 times [2024-06-27 19:46:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335626142] [2024-06-27 19:46:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:52,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335626142] [2024-06-27 19:46:52,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335626142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:52,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:52,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859708257] [2024-06-27 19:46:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:52,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:52,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 287 transitions, 3536 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:52,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:52,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:52,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:53,209 INFO L124 PetriNetUnfolderBase]: 793/1374 cut-off events. [2024-06-27 19:46:53,209 INFO L125 PetriNetUnfolderBase]: For 156768/156768 co-relation queries the response was YES. [2024-06-27 19:46:53,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10937 conditions, 1374 events. 793/1374 cut-off events. For 156768/156768 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7170 event pairs, 84 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 10803. Up to 1233 conditions per place. [2024-06-27 19:46:53,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 50 changer transitions 0/307 dead transitions. [2024-06-27 19:46:53,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 307 transitions, 4226 flow [2024-06-27 19:46:53,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:46:53,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:46:53,224 INFO L175 Difference]: Start difference. First operand has 297 places, 287 transitions, 3536 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:46:53,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 307 transitions, 4226 flow [2024-06-27 19:46:53,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 307 transitions, 4148 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:53,679 INFO L231 Difference]: Finished difference. Result has 302 places, 290 transitions, 3605 flow [2024-06-27 19:46:53,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3605, PETRI_PLACES=302, PETRI_TRANSITIONS=290} [2024-06-27 19:46:53,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-27 19:46:53,679 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 290 transitions, 3605 flow [2024-06-27 19:46:53,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:53,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:53,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:53,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:46:53,679 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:53,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 7009261, now seen corresponding path program 9 times [2024-06-27 19:46:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858593971] [2024-06-27 19:46:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:53,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858593971] [2024-06-27 19:46:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858593971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80667391] [2024-06-27 19:46:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:55,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:55,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 290 transitions, 3605 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:55,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:55,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:55,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:55,760 INFO L124 PetriNetUnfolderBase]: 809/1400 cut-off events. [2024-06-27 19:46:55,760 INFO L125 PetriNetUnfolderBase]: For 169469/169469 co-relation queries the response was YES. [2024-06-27 19:46:55,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 1400 events. 809/1400 cut-off events. For 169469/169469 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7368 event pairs, 68 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 11323. Up to 1167 conditions per place. [2024-06-27 19:46:55,775 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 72 changer transitions 0/314 dead transitions. [2024-06-27 19:46:55,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 314 transitions, 4583 flow [2024-06-27 19:46:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:46:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:46:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 19:46:55,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-27 19:46:55,776 INFO L175 Difference]: Start difference. First operand has 302 places, 290 transitions, 3605 flow. Second operand 11 states and 140 transitions. [2024-06-27 19:46:55,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 314 transitions, 4583 flow [2024-06-27 19:46:56,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 314 transitions, 4437 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:46:56,308 INFO L231 Difference]: Finished difference. Result has 305 places, 294 transitions, 3728 flow [2024-06-27 19:46:56,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=305, PETRI_TRANSITIONS=294} [2024-06-27 19:46:56,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 19:46:56,309 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 294 transitions, 3728 flow [2024-06-27 19:46:56,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:56,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:56,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:56,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:46:56,309 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:56,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1241704333, now seen corresponding path program 3 times [2024-06-27 19:46:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:56,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937090187] [2024-06-27 19:46:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:56,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937090187] [2024-06-27 19:46:57,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937090187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:57,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955696167] [2024-06-27 19:46:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:57,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:57,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 294 transitions, 3728 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:57,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:57,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:57,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:46:57,963 INFO L124 PetriNetUnfolderBase]: 813/1408 cut-off events. [2024-06-27 19:46:57,963 INFO L125 PetriNetUnfolderBase]: For 172668/172668 co-relation queries the response was YES. [2024-06-27 19:46:57,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11568 conditions, 1408 events. 813/1408 cut-off events. For 172668/172668 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7417 event pairs, 89 based on Foata normal form. 2/1408 useless extension candidates. Maximal degree in co-relation 11431. Up to 1321 conditions per place. [2024-06-27 19:46:57,977 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 276 selfloop transitions, 32 changer transitions 0/310 dead transitions. [2024-06-27 19:46:57,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 310 transitions, 4392 flow [2024-06-27 19:46:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:46:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:46:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:46:57,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:46:57,978 INFO L175 Difference]: Start difference. First operand has 305 places, 294 transitions, 3728 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:46:57,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 310 transitions, 4392 flow [2024-06-27 19:46:58,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 310 transitions, 4235 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 19:46:58,537 INFO L231 Difference]: Finished difference. Result has 308 places, 295 transitions, 3651 flow [2024-06-27 19:46:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3651, PETRI_PLACES=308, PETRI_TRANSITIONS=295} [2024-06-27 19:46:58,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-27 19:46:58,538 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 295 transitions, 3651 flow [2024-06-27 19:46:58,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:58,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:46:58,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:46:58,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:46:58,538 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:46:58,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:46:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1034774187, now seen corresponding path program 10 times [2024-06-27 19:46:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:46:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670051675] [2024-06-27 19:46:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:46:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:46:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:46:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:46:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:46:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670051675] [2024-06-27 19:46:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670051675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:46:59,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:46:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:46:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787902416] [2024-06-27 19:46:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:46:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:46:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:46:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:46:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:46:59,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:46:59,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 295 transitions, 3651 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:46:59,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:46:59,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:46:59,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:00,366 INFO L124 PetriNetUnfolderBase]: 815/1412 cut-off events. [2024-06-27 19:47:00,366 INFO L125 PetriNetUnfolderBase]: For 175804/175804 co-relation queries the response was YES. [2024-06-27 19:47:00,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11403 conditions, 1412 events. 815/1412 cut-off events. For 175804/175804 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7471 event pairs, 76 based on Foata normal form. 4/1414 useless extension candidates. Maximal degree in co-relation 11264. Up to 1087 conditions per place. [2024-06-27 19:47:00,381 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 82 changer transitions 0/316 dead transitions. [2024-06-27 19:47:00,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 316 transitions, 4579 flow [2024-06-27 19:47:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 19:47:00,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 19:47:00,382 INFO L175 Difference]: Start difference. First operand has 308 places, 295 transitions, 3651 flow. Second operand 11 states and 139 transitions. [2024-06-27 19:47:00,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 316 transitions, 4579 flow [2024-06-27 19:47:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 316 transitions, 4489 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:01,007 INFO L231 Difference]: Finished difference. Result has 312 places, 297 transitions, 3803 flow [2024-06-27 19:47:01,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3803, PETRI_PLACES=312, PETRI_TRANSITIONS=297} [2024-06-27 19:47:01,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 19:47:01,008 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 297 transitions, 3803 flow [2024-06-27 19:47:01,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:01,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:01,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:47:01,008 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:01,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1234285723, now seen corresponding path program 4 times [2024-06-27 19:47:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:01,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640001201] [2024-06-27 19:47:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640001201] [2024-06-27 19:47:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640001201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614180111] [2024-06-27 19:47:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:02,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:02,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:02,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 297 transitions, 3803 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:02,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:02,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:02,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:02,654 INFO L124 PetriNetUnfolderBase]: 819/1420 cut-off events. [2024-06-27 19:47:02,655 INFO L125 PetriNetUnfolderBase]: For 175156/175156 co-relation queries the response was YES. [2024-06-27 19:47:02,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11648 conditions, 1420 events. 819/1420 cut-off events. For 175156/175156 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7498 event pairs, 86 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 11507. Up to 1307 conditions per place. [2024-06-27 19:47:02,670 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 272 selfloop transitions, 40 changer transitions 0/314 dead transitions. [2024-06-27 19:47:02,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 314 transitions, 4483 flow [2024-06-27 19:47:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:47:02,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 19:47:02,673 INFO L175 Difference]: Start difference. First operand has 312 places, 297 transitions, 3803 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:47:02,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 314 transitions, 4483 flow [2024-06-27 19:47:03,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 314 transitions, 4129 flow, removed 38 selfloop flow, removed 13 redundant places. [2024-06-27 19:47:03,312 INFO L231 Difference]: Finished difference. Result has 309 places, 298 transitions, 3548 flow [2024-06-27 19:47:03,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3449, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=309, PETRI_TRANSITIONS=298} [2024-06-27 19:47:03,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-27 19:47:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 298 transitions, 3548 flow [2024-06-27 19:47:03,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:47:03,314 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1234277787, now seen corresponding path program 11 times [2024-06-27 19:47:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118203196] [2024-06-27 19:47:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:04,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:04,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118203196] [2024-06-27 19:47:04,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118203196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:04,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:04,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:04,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2208005] [2024-06-27 19:47:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:04,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:04,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:05,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:05,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 298 transitions, 3548 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:05,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:05,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:05,587 INFO L124 PetriNetUnfolderBase]: 811/1408 cut-off events. [2024-06-27 19:47:05,587 INFO L125 PetriNetUnfolderBase]: For 160673/160673 co-relation queries the response was YES. [2024-06-27 19:47:05,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10750 conditions, 1408 events. 811/1408 cut-off events. For 160673/160673 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7451 event pairs, 76 based on Foata normal form. 4/1410 useless extension candidates. Maximal degree in co-relation 10612. Up to 1237 conditions per place. [2024-06-27 19:47:05,602 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 54 changer transitions 0/316 dead transitions. [2024-06-27 19:47:05,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 316 transitions, 4228 flow [2024-06-27 19:47:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:47:05,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:47:05,603 INFO L175 Difference]: Start difference. First operand has 309 places, 298 transitions, 3548 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:47:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 316 transitions, 4228 flow [2024-06-27 19:47:06,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 316 transitions, 4105 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:06,069 INFO L231 Difference]: Finished difference. Result has 312 places, 298 transitions, 3541 flow [2024-06-27 19:47:06,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3541, PETRI_PLACES=312, PETRI_TRANSITIONS=298} [2024-06-27 19:47:06,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 19:47:06,069 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 298 transitions, 3541 flow [2024-06-27 19:47:06,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:06,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:06,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:06,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:47:06,069 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:06,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1234070242, now seen corresponding path program 9 times [2024-06-27 19:47:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732226759] [2024-06-27 19:47:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:06,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:07,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732226759] [2024-06-27 19:47:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732226759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:07,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:07,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491556584] [2024-06-27 19:47:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:07,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:07,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:07,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:07,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:07,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 298 transitions, 3541 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:07,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:07,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:07,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:07,734 INFO L124 PetriNetUnfolderBase]: 835/1460 cut-off events. [2024-06-27 19:47:07,734 INFO L125 PetriNetUnfolderBase]: For 207764/207764 co-relation queries the response was YES. [2024-06-27 19:47:07,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10997 conditions, 1460 events. 835/1460 cut-off events. For 207764/207764 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7820 event pairs, 92 based on Foata normal form. 14/1472 useless extension candidates. Maximal degree in co-relation 10858. Up to 1255 conditions per place. [2024-06-27 19:47:07,748 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 42 changer transitions 12/322 dead transitions. [2024-06-27 19:47:07,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 322 transitions, 4307 flow [2024-06-27 19:47:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 19:47:07,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 19:47:07,749 INFO L175 Difference]: Start difference. First operand has 312 places, 298 transitions, 3541 flow. Second operand 11 states and 136 transitions. [2024-06-27 19:47:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 322 transitions, 4307 flow [2024-06-27 19:47:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 322 transitions, 4198 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:08,311 INFO L231 Difference]: Finished difference. Result has 315 places, 294 transitions, 3455 flow [2024-06-27 19:47:08,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3432, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3455, PETRI_PLACES=315, PETRI_TRANSITIONS=294} [2024-06-27 19:47:08,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-27 19:47:08,312 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 294 transitions, 3455 flow [2024-06-27 19:47:08,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:08,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:08,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:47:08,312 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:08,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1234070397, now seen corresponding path program 12 times [2024-06-27 19:47:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693959905] [2024-06-27 19:47:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:09,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693959905] [2024-06-27 19:47:09,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693959905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:09,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540267144] [2024-06-27 19:47:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:09,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:09,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 294 transitions, 3455 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:09,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:09,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:09,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:10,182 INFO L124 PetriNetUnfolderBase]: 775/1356 cut-off events. [2024-06-27 19:47:10,182 INFO L125 PetriNetUnfolderBase]: For 149065/149065 co-relation queries the response was YES. [2024-06-27 19:47:10,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10011 conditions, 1356 events. 775/1356 cut-off events. For 149065/149065 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7196 event pairs, 69 based on Foata normal form. 4/1358 useless extension candidates. Maximal degree in co-relation 9871. Up to 1158 conditions per place. [2024-06-27 19:47:10,196 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 246 selfloop transitions, 64 changer transitions 0/312 dead transitions. [2024-06-27 19:47:10,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 312 transitions, 4127 flow [2024-06-27 19:47:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:47:10,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 19:47:10,196 INFO L175 Difference]: Start difference. First operand has 315 places, 294 transitions, 3455 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:47:10,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 312 transitions, 4127 flow [2024-06-27 19:47:10,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 312 transitions, 3895 flow, removed 28 selfloop flow, removed 12 redundant places. [2024-06-27 19:47:10,686 INFO L231 Difference]: Finished difference. Result has 314 places, 294 transitions, 3359 flow [2024-06-27 19:47:10,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3359, PETRI_PLACES=314, PETRI_TRANSITIONS=294} [2024-06-27 19:47:10,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 19:47:10,687 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 294 transitions, 3359 flow [2024-06-27 19:47:10,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:10,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:10,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:47:10,687 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:10,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1034624302, now seen corresponding path program 10 times [2024-06-27 19:47:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724511098] [2024-06-27 19:47:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724511098] [2024-06-27 19:47:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724511098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:11,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:11,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165013640] [2024-06-27 19:47:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:11,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:11,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 294 transitions, 3359 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:11,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:11,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:11,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:12,548 INFO L124 PetriNetUnfolderBase]: 779/1364 cut-off events. [2024-06-27 19:47:12,548 INFO L125 PetriNetUnfolderBase]: For 142259/142259 co-relation queries the response was YES. [2024-06-27 19:47:12,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9899 conditions, 1364 events. 779/1364 cut-off events. For 142259/142259 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7268 event pairs, 88 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 9760. Up to 1218 conditions per place. [2024-06-27 19:47:12,562 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 58 changer transitions 0/312 dead transitions. [2024-06-27 19:47:12,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 312 transitions, 4043 flow [2024-06-27 19:47:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:47:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:47:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:47:12,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:47:12,562 INFO L175 Difference]: Start difference. First operand has 314 places, 294 transitions, 3359 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:47:12,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 312 transitions, 4043 flow [2024-06-27 19:47:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 312 transitions, 3917 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:13,052 INFO L231 Difference]: Finished difference. Result has 317 places, 295 transitions, 3377 flow [2024-06-27 19:47:13,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3377, PETRI_PLACES=317, PETRI_TRANSITIONS=295} [2024-06-27 19:47:13,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 19:47:13,052 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 295 transitions, 3377 flow [2024-06-27 19:47:13,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:13,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:13,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:13,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:47:13,053 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:13,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1034620582, now seen corresponding path program 11 times [2024-06-27 19:47:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151093315] [2024-06-27 19:47:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:14,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:14,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151093315] [2024-06-27 19:47:14,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151093315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:14,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:14,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498619579] [2024-06-27 19:47:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:14,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:14,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 295 transitions, 3377 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:14,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:14,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:14,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:14,847 INFO L124 PetriNetUnfolderBase]: 790/1385 cut-off events. [2024-06-27 19:47:14,847 INFO L125 PetriNetUnfolderBase]: For 154953/154953 co-relation queries the response was YES. [2024-06-27 19:47:14,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10244 conditions, 1385 events. 790/1385 cut-off events. For 154953/154953 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7406 event pairs, 87 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 10104. Up to 1208 conditions per place. [2024-06-27 19:47:14,863 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 60 changer transitions 0/315 dead transitions. [2024-06-27 19:47:14,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 315 transitions, 4287 flow [2024-06-27 19:47:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:47:14,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 19:47:14,864 INFO L175 Difference]: Start difference. First operand has 317 places, 295 transitions, 3377 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:47:14,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 315 transitions, 4287 flow [2024-06-27 19:47:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 315 transitions, 4142 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 19:47:15,347 INFO L231 Difference]: Finished difference. Result has 317 places, 297 transitions, 3404 flow [2024-06-27 19:47:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3404, PETRI_PLACES=317, PETRI_TRANSITIONS=297} [2024-06-27 19:47:15,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 19:47:15,347 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 297 transitions, 3404 flow [2024-06-27 19:47:15,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:15,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:15,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:15,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:47:15,347 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:15,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130832, now seen corresponding path program 12 times [2024-06-27 19:47:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:15,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567929972] [2024-06-27 19:47:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:15,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567929972] [2024-06-27 19:47:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567929972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523853028] [2024-06-27 19:47:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:16,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:16,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:16,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 297 transitions, 3404 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:16,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:16,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:16,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:17,233 INFO L124 PetriNetUnfolderBase]: 787/1380 cut-off events. [2024-06-27 19:47:17,233 INFO L125 PetriNetUnfolderBase]: For 145411/145411 co-relation queries the response was YES. [2024-06-27 19:47:17,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9983 conditions, 1380 events. 787/1380 cut-off events. For 145411/145411 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7395 event pairs, 88 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 9844. Up to 1255 conditions per place. [2024-06-27 19:47:17,246 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 46 changer transitions 0/313 dead transitions. [2024-06-27 19:47:17,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 313 transitions, 4068 flow [2024-06-27 19:47:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:47:17,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 19:47:17,247 INFO L175 Difference]: Start difference. First operand has 317 places, 297 transitions, 3404 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:47:17,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 313 transitions, 4068 flow [2024-06-27 19:47:17,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 313 transitions, 3962 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:47:17,742 INFO L231 Difference]: Finished difference. Result has 321 places, 297 transitions, 3394 flow [2024-06-27 19:47:17,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=321, PETRI_TRANSITIONS=297} [2024-06-27 19:47:17,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 19:47:17,742 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 297 transitions, 3394 flow [2024-06-27 19:47:17,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:17,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:17,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:17,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:47:17,743 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:17,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130987, now seen corresponding path program 13 times [2024-06-27 19:47:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:17,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13627783] [2024-06-27 19:47:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:19,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13627783] [2024-06-27 19:47:19,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13627783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:19,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34630007] [2024-06-27 19:47:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:19,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:19,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:19,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 297 transitions, 3394 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:19,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:19,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:19,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:19,721 INFO L124 PetriNetUnfolderBase]: 793/1390 cut-off events. [2024-06-27 19:47:19,721 INFO L125 PetriNetUnfolderBase]: For 148223/148223 co-relation queries the response was YES. [2024-06-27 19:47:19,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10099 conditions, 1390 events. 793/1390 cut-off events. For 148223/148223 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7442 event pairs, 85 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 9958. Up to 1105 conditions per place. [2024-06-27 19:47:19,737 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 75 changer transitions 0/317 dead transitions. [2024-06-27 19:47:19,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 317 transitions, 4322 flow [2024-06-27 19:47:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 19:47:19,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 19:47:19,737 INFO L175 Difference]: Start difference. First operand has 321 places, 297 transitions, 3394 flow. Second operand 10 states and 132 transitions. [2024-06-27 19:47:19,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 317 transitions, 4322 flow [2024-06-27 19:47:20,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 317 transitions, 4185 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:47:20,316 INFO L231 Difference]: Finished difference. Result has 318 places, 299 transitions, 3465 flow [2024-06-27 19:47:20,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3257, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3465, PETRI_PLACES=318, PETRI_TRANSITIONS=299} [2024-06-27 19:47:20,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-27 19:47:20,316 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 299 transitions, 3465 flow [2024-06-27 19:47:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:20,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:20,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:20,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:47:20,317 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:20,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1040136567, now seen corresponding path program 14 times [2024-06-27 19:47:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187586419] [2024-06-27 19:47:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:21,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187586419] [2024-06-27 19:47:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187586419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:21,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:21,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:21,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064931370] [2024-06-27 19:47:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:21,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:21,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:21,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 299 transitions, 3465 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:21,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:21,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:21,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:22,147 INFO L124 PetriNetUnfolderBase]: 799/1400 cut-off events. [2024-06-27 19:47:22,147 INFO L125 PetriNetUnfolderBase]: For 151479/151479 co-relation queries the response was YES. [2024-06-27 19:47:22,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10277 conditions, 1400 events. 799/1400 cut-off events. For 151479/151479 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7527 event pairs, 85 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 10135. Up to 1111 conditions per place. [2024-06-27 19:47:22,163 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 77 changer transitions 0/321 dead transitions. [2024-06-27 19:47:22,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 321 transitions, 4413 flow [2024-06-27 19:47:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 19:47:22,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 19:47:22,164 INFO L175 Difference]: Start difference. First operand has 318 places, 299 transitions, 3465 flow. Second operand 11 states and 142 transitions. [2024-06-27 19:47:22,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 321 transitions, 4413 flow [2024-06-27 19:47:22,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 321 transitions, 4132 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 19:47:22,656 INFO L231 Difference]: Finished difference. Result has 318 places, 301 transitions, 3399 flow [2024-06-27 19:47:22,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3399, PETRI_PLACES=318, PETRI_TRANSITIONS=301} [2024-06-27 19:47:22,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-27 19:47:22,657 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 301 transitions, 3399 flow [2024-06-27 19:47:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:22,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:22,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:22,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:47:22,657 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:22,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:22,657 INFO L85 PathProgramCache]: Analyzing trace with hash 12579031, now seen corresponding path program 15 times [2024-06-27 19:47:22,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510302064] [2024-06-27 19:47:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:24,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:24,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510302064] [2024-06-27 19:47:24,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510302064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:24,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:24,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241468998] [2024-06-27 19:47:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:24,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:24,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:24,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:24,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 301 transitions, 3399 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:24,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:24,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:24,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:24,813 INFO L124 PetriNetUnfolderBase]: 795/1394 cut-off events. [2024-06-27 19:47:24,813 INFO L125 PetriNetUnfolderBase]: For 141334/141334 co-relation queries the response was YES. [2024-06-27 19:47:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9822 conditions, 1394 events. 795/1394 cut-off events. For 141334/141334 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7509 event pairs, 75 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 9682. Up to 1204 conditions per place. [2024-06-27 19:47:24,826 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 58 changer transitions 0/319 dead transitions. [2024-06-27 19:47:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 319 transitions, 4085 flow [2024-06-27 19:47:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:47:24,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 19:47:24,827 INFO L175 Difference]: Start difference. First operand has 318 places, 301 transitions, 3399 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:47:24,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 319 transitions, 4085 flow [2024-06-27 19:47:25,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 319 transitions, 3881 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:25,311 INFO L231 Difference]: Finished difference. Result has 320 places, 301 transitions, 3316 flow [2024-06-27 19:47:25,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3316, PETRI_PLACES=320, PETRI_TRANSITIONS=301} [2024-06-27 19:47:25,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 19:47:25,311 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 301 transitions, 3316 flow [2024-06-27 19:47:25,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:25,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:25,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:47:25,311 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:25,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1040346313, now seen corresponding path program 5 times [2024-06-27 19:47:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376205861] [2024-06-27 19:47:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:26,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:26,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376205861] [2024-06-27 19:47:26,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376205861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:26,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:26,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:26,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927953343] [2024-06-27 19:47:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:26,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:26,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 301 transitions, 3316 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:26,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:26,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:26,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:27,332 INFO L124 PetriNetUnfolderBase]: 799/1402 cut-off events. [2024-06-27 19:47:27,332 INFO L125 PetriNetUnfolderBase]: For 143644/143644 co-relation queries the response was YES. [2024-06-27 19:47:27,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 1402 events. 799/1402 cut-off events. For 143644/143644 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7553 event pairs, 80 based on Foata normal form. 2/1402 useless extension candidates. Maximal degree in co-relation 9634. Up to 1268 conditions per place. [2024-06-27 19:47:27,347 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 44 changer transitions 0/318 dead transitions. [2024-06-27 19:47:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 318 transitions, 4006 flow [2024-06-27 19:47:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:47:27,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 19:47:27,348 INFO L175 Difference]: Start difference. First operand has 320 places, 301 transitions, 3316 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:47:27,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 318 transitions, 4006 flow [2024-06-27 19:47:27,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 318 transitions, 3875 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:47:27,803 INFO L231 Difference]: Finished difference. Result has 320 places, 302 transitions, 3293 flow [2024-06-27 19:47:27,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3185, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3293, PETRI_PLACES=320, PETRI_TRANSITIONS=302} [2024-06-27 19:47:27,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 19:47:27,803 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 302 transitions, 3293 flow [2024-06-27 19:47:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:27,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:27,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:47:27,804 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:27,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1246223051, now seen corresponding path program 6 times [2024-06-27 19:47:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593882854] [2024-06-27 19:47:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593882854] [2024-06-27 19:47:28,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593882854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:28,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:28,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117602272] [2024-06-27 19:47:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:28,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:28,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:28,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 302 transitions, 3293 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:28,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:28,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:28,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:29,274 INFO L124 PetriNetUnfolderBase]: 803/1410 cut-off events. [2024-06-27 19:47:29,274 INFO L125 PetriNetUnfolderBase]: For 146500/146500 co-relation queries the response was YES. [2024-06-27 19:47:29,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9804 conditions, 1410 events. 803/1410 cut-off events. For 146500/146500 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7589 event pairs, 122 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 9662. Up to 1361 conditions per place. [2024-06-27 19:47:29,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 293 selfloop transitions, 20 changer transitions 0/315 dead transitions. [2024-06-27 19:47:29,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 315 transitions, 3965 flow [2024-06-27 19:47:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:47:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 19:47:29,288 INFO L175 Difference]: Start difference. First operand has 320 places, 302 transitions, 3293 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:47:29,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 315 transitions, 3965 flow [2024-06-27 19:47:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 315 transitions, 3867 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:29,815 INFO L231 Difference]: Finished difference. Result has 322 places, 303 transitions, 3258 flow [2024-06-27 19:47:29,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3258, PETRI_PLACES=322, PETRI_TRANSITIONS=303} [2024-06-27 19:47:29,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-27 19:47:29,816 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 303 transitions, 3258 flow [2024-06-27 19:47:29,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:29,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:29,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:29,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:47:29,816 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:29,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1435111851, now seen corresponding path program 7 times [2024-06-27 19:47:29,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:29,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402004500] [2024-06-27 19:47:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:29,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402004500] [2024-06-27 19:47:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402004500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:31,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126049281] [2024-06-27 19:47:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:31,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:31,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 303 transitions, 3258 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:31,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:31,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:31,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:31,524 INFO L124 PetriNetUnfolderBase]: 807/1418 cut-off events. [2024-06-27 19:47:31,524 INFO L125 PetriNetUnfolderBase]: For 149134/149134 co-relation queries the response was YES. [2024-06-27 19:47:31,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 1418 events. 807/1418 cut-off events. For 149134/149134 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7677 event pairs, 120 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 9662. Up to 1371 conditions per place. [2024-06-27 19:47:31,538 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 18 changer transitions 0/317 dead transitions. [2024-06-27 19:47:31,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 317 transitions, 3940 flow [2024-06-27 19:47:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:47:31,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:47:31,538 INFO L175 Difference]: Start difference. First operand has 322 places, 303 transitions, 3258 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:47:31,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 317 transitions, 3940 flow [2024-06-27 19:47:32,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 317 transitions, 3889 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:32,030 INFO L231 Difference]: Finished difference. Result has 324 places, 304 transitions, 3267 flow [2024-06-27 19:47:32,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3267, PETRI_PLACES=324, PETRI_TRANSITIONS=304} [2024-06-27 19:47:32,030 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-27 19:47:32,030 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 304 transitions, 3267 flow [2024-06-27 19:47:32,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:47:32,031 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:32,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash 352799673, now seen corresponding path program 16 times [2024-06-27 19:47:32,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:32,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504790631] [2024-06-27 19:47:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504790631] [2024-06-27 19:47:33,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504790631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:33,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:33,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:33,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738839469] [2024-06-27 19:47:33,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:33,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:33,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:33,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:33,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 304 transitions, 3267 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:33,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:33,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:33,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:34,119 INFO L124 PetriNetUnfolderBase]: 803/1412 cut-off events. [2024-06-27 19:47:34,119 INFO L125 PetriNetUnfolderBase]: For 141150/141150 co-relation queries the response was YES. [2024-06-27 19:47:34,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9577 conditions, 1412 events. 803/1412 cut-off events. For 141150/141150 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7619 event pairs, 110 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 9433. Up to 1281 conditions per place. [2024-06-27 19:47:34,133 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 281 selfloop transitions, 38 changer transitions 0/321 dead transitions. [2024-06-27 19:47:34,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 321 transitions, 4161 flow [2024-06-27 19:47:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:34,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:47:34,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:47:34,133 INFO L175 Difference]: Start difference. First operand has 324 places, 304 transitions, 3267 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:47:34,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 321 transitions, 4161 flow [2024-06-27 19:47:34,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 321 transitions, 4095 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:34,616 INFO L231 Difference]: Finished difference. Result has 328 places, 305 transitions, 3299 flow [2024-06-27 19:47:34,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3201, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3299, PETRI_PLACES=328, PETRI_TRANSITIONS=305} [2024-06-27 19:47:34,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-27 19:47:34,617 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 305 transitions, 3299 flow [2024-06-27 19:47:34,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:34,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:34,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:47:34,617 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1112216363, now seen corresponding path program 8 times [2024-06-27 19:47:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224992596] [2024-06-27 19:47:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:35,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:35,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224992596] [2024-06-27 19:47:35,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224992596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:35,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:35,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:35,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512148870] [2024-06-27 19:47:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:35,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:35,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:35,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:35,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:35,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 305 transitions, 3299 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:35,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:35,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:35,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:36,088 INFO L124 PetriNetUnfolderBase]: 807/1420 cut-off events. [2024-06-27 19:47:36,088 INFO L125 PetriNetUnfolderBase]: For 143934/143934 co-relation queries the response was YES. [2024-06-27 19:47:36,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9694 conditions, 1420 events. 807/1420 cut-off events. For 143934/143934 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7703 event pairs, 123 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 9548. Up to 1374 conditions per place. [2024-06-27 19:47:36,102 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 298 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-27 19:47:36,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 318 transitions, 3979 flow [2024-06-27 19:47:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:47:36,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 19:47:36,103 INFO L175 Difference]: Start difference. First operand has 328 places, 305 transitions, 3299 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:47:36,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 318 transitions, 3979 flow [2024-06-27 19:47:36,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 318 transitions, 3793 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:36,559 INFO L231 Difference]: Finished difference. Result has 330 places, 306 transitions, 3175 flow [2024-06-27 19:47:36,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3175, PETRI_PLACES=330, PETRI_TRANSITIONS=306} [2024-06-27 19:47:36,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 19:47:36,560 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 306 transitions, 3175 flow [2024-06-27 19:47:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:36,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:36,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:36,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:47:36,560 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:36,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 585605449, now seen corresponding path program 17 times [2024-06-27 19:47:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196529210] [2024-06-27 19:47:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:38,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196529210] [2024-06-27 19:47:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196529210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:38,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:38,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:38,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760418091] [2024-06-27 19:47:38,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:38,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:38,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:38,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:38,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 306 transitions, 3175 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:38,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:38,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:38,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:38,696 INFO L124 PetriNetUnfolderBase]: 813/1430 cut-off events. [2024-06-27 19:47:38,696 INFO L125 PetriNetUnfolderBase]: For 146538/146538 co-relation queries the response was YES. [2024-06-27 19:47:38,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 1430 events. 813/1430 cut-off events. For 146538/146538 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7781 event pairs, 101 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 9555. Up to 1261 conditions per place. [2024-06-27 19:47:38,711 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 52 changer transitions 0/323 dead transitions. [2024-06-27 19:47:38,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 3899 flow [2024-06-27 19:47:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:38,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:47:38,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 19:47:38,712 INFO L175 Difference]: Start difference. First operand has 330 places, 306 transitions, 3175 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:47:38,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 3899 flow [2024-06-27 19:47:39,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 323 transitions, 3847 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:39,192 INFO L231 Difference]: Finished difference. Result has 333 places, 308 transitions, 3276 flow [2024-06-27 19:47:39,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3276, PETRI_PLACES=333, PETRI_TRANSITIONS=308} [2024-06-27 19:47:39,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 19:47:39,193 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 308 transitions, 3276 flow [2024-06-27 19:47:39,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:39,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:39,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:39,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:47:39,193 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:39,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1340434209, now seen corresponding path program 18 times [2024-06-27 19:47:39,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:39,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502734071] [2024-06-27 19:47:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502734071] [2024-06-27 19:47:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502734071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:40,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:40,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322107511] [2024-06-27 19:47:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:40,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:40,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:40,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 308 transitions, 3276 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:40,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:40,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:40,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:41,000 INFO L124 PetriNetUnfolderBase]: 822/1445 cut-off events. [2024-06-27 19:47:41,000 INFO L125 PetriNetUnfolderBase]: For 149627/149627 co-relation queries the response was YES. [2024-06-27 19:47:41,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9923 conditions, 1445 events. 822/1445 cut-off events. For 149627/149627 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7881 event pairs, 103 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 9776. Up to 1267 conditions per place. [2024-06-27 19:47:41,015 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2024-06-27 19:47:41,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 329 transitions, 4039 flow [2024-06-27 19:47:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:47:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:47:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:47:41,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 19:47:41,016 INFO L175 Difference]: Start difference. First operand has 333 places, 308 transitions, 3276 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:47:41,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 329 transitions, 4039 flow [2024-06-27 19:47:41,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 329 transitions, 3908 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:41,512 INFO L231 Difference]: Finished difference. Result has 337 places, 312 transitions, 3337 flow [2024-06-27 19:47:41,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3337, PETRI_PLACES=337, PETRI_TRANSITIONS=312} [2024-06-27 19:47:41,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-27 19:47:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 312 transitions, 3337 flow [2024-06-27 19:47:41,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:41,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:41,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:47:41,513 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:41,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1123258253, now seen corresponding path program 9 times [2024-06-27 19:47:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553560289] [2024-06-27 19:47:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:42,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553560289] [2024-06-27 19:47:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553560289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:42,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:42,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:42,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359446411] [2024-06-27 19:47:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:42,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:42,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:42,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:42,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 312 transitions, 3337 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:42,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:42,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:42,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:42,976 INFO L124 PetriNetUnfolderBase]: 826/1453 cut-off events. [2024-06-27 19:47:42,976 INFO L125 PetriNetUnfolderBase]: For 152119/152119 co-relation queries the response was YES. [2024-06-27 19:47:42,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 1453 events. 826/1453 cut-off events. For 152119/152119 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7917 event pairs, 125 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 9857. Up to 1410 conditions per place. [2024-06-27 19:47:42,991 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 308 selfloop transitions, 15 changer transitions 0/325 dead transitions. [2024-06-27 19:47:42,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 325 transitions, 4031 flow [2024-06-27 19:47:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:47:42,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:47:42,992 INFO L175 Difference]: Start difference. First operand has 337 places, 312 transitions, 3337 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:47:42,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 325 transitions, 4031 flow [2024-06-27 19:47:43,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 325 transitions, 3892 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:43,511 INFO L231 Difference]: Finished difference. Result has 338 places, 313 transitions, 3256 flow [2024-06-27 19:47:43,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3256, PETRI_PLACES=338, PETRI_TRANSITIONS=313} [2024-06-27 19:47:43,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-27 19:47:43,511 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 313 transitions, 3256 flow [2024-06-27 19:47:43,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:43,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:43,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:43,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:47:43,512 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:43,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash 550346455, now seen corresponding path program 10 times [2024-06-27 19:47:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:43,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209299459] [2024-06-27 19:47:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:43,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209299459] [2024-06-27 19:47:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209299459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175609031] [2024-06-27 19:47:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:44,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:44,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 313 transitions, 3256 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:44,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:44,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:44,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:45,153 INFO L124 PetriNetUnfolderBase]: 830/1461 cut-off events. [2024-06-27 19:47:45,153 INFO L125 PetriNetUnfolderBase]: For 154811/154811 co-relation queries the response was YES. [2024-06-27 19:47:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9939 conditions, 1461 events. 830/1461 cut-off events. For 154811/154811 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8028 event pairs, 125 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 9789. Up to 1423 conditions per place. [2024-06-27 19:47:45,168 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 309 selfloop transitions, 16 changer transitions 0/327 dead transitions. [2024-06-27 19:47:45,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 327 transitions, 3974 flow [2024-06-27 19:47:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:47:45,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 19:47:45,169 INFO L175 Difference]: Start difference. First operand has 338 places, 313 transitions, 3256 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:47:45,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 327 transitions, 3974 flow [2024-06-27 19:47:45,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 327 transitions, 3926 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:45,655 INFO L231 Difference]: Finished difference. Result has 341 places, 315 transitions, 3289 flow [2024-06-27 19:47:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3289, PETRI_PLACES=341, PETRI_TRANSITIONS=315} [2024-06-27 19:47:45,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-27 19:47:45,656 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 315 transitions, 3289 flow [2024-06-27 19:47:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:45,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:45,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:47:45,656 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:45,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1334856503, now seen corresponding path program 11 times [2024-06-27 19:47:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:45,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327701955] [2024-06-27 19:47:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:45,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327701955] [2024-06-27 19:47:46,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327701955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:46,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347316519] [2024-06-27 19:47:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:46,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:46,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:46,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 315 transitions, 3289 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:46,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:46,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:46,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:47,223 INFO L124 PetriNetUnfolderBase]: 834/1469 cut-off events. [2024-06-27 19:47:47,223 INFO L125 PetriNetUnfolderBase]: For 157990/157990 co-relation queries the response was YES. [2024-06-27 19:47:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10013 conditions, 1469 events. 834/1469 cut-off events. For 157990/157990 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8086 event pairs, 115 based on Foata normal form. 2/1469 useless extension candidates. Maximal degree in co-relation 9861. Up to 1381 conditions per place. [2024-06-27 19:47:47,234 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 31 changer transitions 0/329 dead transitions. [2024-06-27 19:47:47,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 329 transitions, 4003 flow [2024-06-27 19:47:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:47:47,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 19:47:47,235 INFO L175 Difference]: Start difference. First operand has 341 places, 315 transitions, 3289 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:47:47,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 329 transitions, 4003 flow [2024-06-27 19:47:47,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 329 transitions, 3957 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:47:47,755 INFO L231 Difference]: Finished difference. Result has 345 places, 316 transitions, 3337 flow [2024-06-27 19:47:47,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3337, PETRI_PLACES=345, PETRI_TRANSITIONS=316} [2024-06-27 19:47:47,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-27 19:47:47,755 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 316 transitions, 3337 flow [2024-06-27 19:47:47,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:47,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:47,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:47,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:47:47,755 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:47,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 591169639, now seen corresponding path program 19 times [2024-06-27 19:47:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:47,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087993323] [2024-06-27 19:47:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:49,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:49,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087993323] [2024-06-27 19:47:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087993323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:49,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584999501] [2024-06-27 19:47:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:49,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:49,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:49,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 316 transitions, 3337 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:49,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:49,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:50,222 INFO L124 PetriNetUnfolderBase]: 840/1479 cut-off events. [2024-06-27 19:47:50,223 INFO L125 PetriNetUnfolderBase]: For 161157/161157 co-relation queries the response was YES. [2024-06-27 19:47:50,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 1479 events. 840/1479 cut-off events. For 161157/161157 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8176 event pairs, 101 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 9973. Up to 1285 conditions per place. [2024-06-27 19:47:50,237 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 55 changer transitions 0/333 dead transitions. [2024-06-27 19:47:50,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 333 transitions, 4077 flow [2024-06-27 19:47:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:47:50,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 19:47:50,238 INFO L175 Difference]: Start difference. First operand has 345 places, 316 transitions, 3337 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:47:50,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 333 transitions, 4077 flow [2024-06-27 19:47:50,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 333 transitions, 3993 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:50,843 INFO L231 Difference]: Finished difference. Result has 348 places, 318 transitions, 3408 flow [2024-06-27 19:47:50,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3408, PETRI_PLACES=348, PETRI_TRANSITIONS=318} [2024-06-27 19:47:50,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-27 19:47:50,844 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 318 transitions, 3408 flow [2024-06-27 19:47:50,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:50,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:50,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:50,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:47:50,844 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:50,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071984, now seen corresponding path program 13 times [2024-06-27 19:47:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:50,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151005613] [2024-06-27 19:47:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:51,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151005613] [2024-06-27 19:47:51,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151005613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:51,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:51,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:51,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385331212] [2024-06-27 19:47:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:51,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:51,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 318 transitions, 3408 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:52,380 INFO L124 PetriNetUnfolderBase]: 844/1487 cut-off events. [2024-06-27 19:47:52,380 INFO L125 PetriNetUnfolderBase]: For 163589/163589 co-relation queries the response was YES. [2024-06-27 19:47:52,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 1487 events. 844/1487 cut-off events. For 163589/163589 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8211 event pairs, 121 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 10086. Up to 1352 conditions per place. [2024-06-27 19:47:52,397 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 44 changer transitions 0/331 dead transitions. [2024-06-27 19:47:52,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 331 transitions, 4118 flow [2024-06-27 19:47:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:47:52,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:47:52,398 INFO L175 Difference]: Start difference. First operand has 348 places, 318 transitions, 3408 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:47:52,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 331 transitions, 4118 flow [2024-06-27 19:47:52,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 331 transitions, 3985 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:52,915 INFO L231 Difference]: Finished difference. Result has 349 places, 319 transitions, 3391 flow [2024-06-27 19:47:52,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3275, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3391, PETRI_PLACES=349, PETRI_TRANSITIONS=319} [2024-06-27 19:47:52,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 19:47:52,915 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 319 transitions, 3391 flow [2024-06-27 19:47:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:52,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:52,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:47:52,916 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:52,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash 542721664, now seen corresponding path program 14 times [2024-06-27 19:47:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:52,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976780048] [2024-06-27 19:47:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:52,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:54,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:54,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976780048] [2024-06-27 19:47:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976780048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:54,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:54,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762336192] [2024-06-27 19:47:54,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:54,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:54,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:54,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 319 transitions, 3391 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:54,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:54,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:54,696 INFO L124 PetriNetUnfolderBase]: 864/1531 cut-off events. [2024-06-27 19:47:54,696 INFO L125 PetriNetUnfolderBase]: For 228631/228631 co-relation queries the response was YES. [2024-06-27 19:47:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10399 conditions, 1531 events. 864/1531 cut-off events. For 228631/228631 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8504 event pairs, 131 based on Foata normal form. 12/1541 useless extension candidates. Maximal degree in co-relation 10244. Up to 1426 conditions per place. [2024-06-27 19:47:54,712 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 309 selfloop transitions, 22 changer transitions 6/339 dead transitions. [2024-06-27 19:47:54,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 339 transitions, 4171 flow [2024-06-27 19:47:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:47:54,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 19:47:54,713 INFO L175 Difference]: Start difference. First operand has 349 places, 319 transitions, 3391 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:47:54,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 339 transitions, 4171 flow [2024-06-27 19:47:55,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 339 transitions, 4065 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:47:55,348 INFO L231 Difference]: Finished difference. Result has 352 places, 319 transitions, 3349 flow [2024-06-27 19:47:55,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3349, PETRI_PLACES=352, PETRI_TRANSITIONS=319} [2024-06-27 19:47:55,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-27 19:47:55,348 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 319 transitions, 3349 flow [2024-06-27 19:47:55,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:55,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:55,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:47:55,348 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:55,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1335066249, now seen corresponding path program 20 times [2024-06-27 19:47:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:55,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941162566] [2024-06-27 19:47:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:56,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941162566] [2024-06-27 19:47:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941162566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783905384] [2024-06-27 19:47:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:56,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:56,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 319 transitions, 3349 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:56,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:56,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:56,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:57,510 INFO L124 PetriNetUnfolderBase]: 854/1515 cut-off events. [2024-06-27 19:47:57,510 INFO L125 PetriNetUnfolderBase]: For 156996/156996 co-relation queries the response was YES. [2024-06-27 19:47:57,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10027 conditions, 1515 events. 854/1515 cut-off events. For 156996/156996 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8477 event pairs, 114 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 9871. Up to 1346 conditions per place. [2024-06-27 19:47:57,527 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 48 changer transitions 0/335 dead transitions. [2024-06-27 19:47:57,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 335 transitions, 4061 flow [2024-06-27 19:47:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:47:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:47:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:47:57,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 19:47:57,528 INFO L175 Difference]: Start difference. First operand has 352 places, 319 transitions, 3349 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:47:57,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 335 transitions, 4061 flow [2024-06-27 19:47:58,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 335 transitions, 3973 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:47:58,103 INFO L231 Difference]: Finished difference. Result has 354 places, 319 transitions, 3362 flow [2024-06-27 19:47:58,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3362, PETRI_PLACES=354, PETRI_TRANSITIONS=319} [2024-06-27 19:47:58,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-27 19:47:58,103 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 319 transitions, 3362 flow [2024-06-27 19:47:58,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:58,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:47:58,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:47:58,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:47:58,103 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:47:58,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:47:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1340434364, now seen corresponding path program 15 times [2024-06-27 19:47:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:47:58,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051155779] [2024-06-27 19:47:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:47:58,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:47:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:47:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:47:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:47:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051155779] [2024-06-27 19:47:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051155779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:47:59,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:47:59,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:47:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114780185] [2024-06-27 19:47:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:47:59,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:47:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:47:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:47:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:47:59,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:47:59,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 319 transitions, 3362 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:47:59,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:47:59,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:47:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:47:59,713 INFO L124 PetriNetUnfolderBase]: 858/1523 cut-off events. [2024-06-27 19:47:59,713 INFO L125 PetriNetUnfolderBase]: For 159324/159324 co-relation queries the response was YES. [2024-06-27 19:47:59,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 1523 events. 858/1523 cut-off events. For 159324/159324 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8480 event pairs, 128 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 9963. Up to 1386 conditions per place. [2024-06-27 19:47:59,729 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 46 changer transitions 0/333 dead transitions. [2024-06-27 19:47:59,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 333 transitions, 4084 flow [2024-06-27 19:47:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:47:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:47:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:47:59,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 19:47:59,730 INFO L175 Difference]: Start difference. First operand has 354 places, 319 transitions, 3362 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:47:59,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 333 transitions, 4084 flow [2024-06-27 19:48:00,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 333 transitions, 3964 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:48:00,279 INFO L231 Difference]: Finished difference. Result has 354 places, 320 transitions, 3367 flow [2024-06-27 19:48:00,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3367, PETRI_PLACES=354, PETRI_TRANSITIONS=320} [2024-06-27 19:48:00,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-27 19:48:00,279 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 320 transitions, 3367 flow [2024-06-27 19:48:00,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:00,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:00,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:48:00,280 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:00,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash 542727399, now seen corresponding path program 21 times [2024-06-27 19:48:00,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:00,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383060671] [2024-06-27 19:48:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:00,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383060671] [2024-06-27 19:48:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383060671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:01,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:01,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356510805] [2024-06-27 19:48:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:01,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:01,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 320 transitions, 3367 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:01,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:01,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:01,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:02,231 INFO L124 PetriNetUnfolderBase]: 864/1533 cut-off events. [2024-06-27 19:48:02,231 INFO L125 PetriNetUnfolderBase]: For 162159/162159 co-relation queries the response was YES. [2024-06-27 19:48:02,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10179 conditions, 1533 events. 864/1533 cut-off events. For 162159/162159 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8562 event pairs, 132 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 10021. Up to 1459 conditions per place. [2024-06-27 19:48:02,245 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 309 selfloop transitions, 26 changer transitions 0/337 dead transitions. [2024-06-27 19:48:02,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 337 transitions, 4111 flow [2024-06-27 19:48:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:48:02,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 19:48:02,246 INFO L175 Difference]: Start difference. First operand has 354 places, 320 transitions, 3367 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:48:02,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 337 transitions, 4111 flow [2024-06-27 19:48:02,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 337 transitions, 3998 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:48:02,750 INFO L231 Difference]: Finished difference. Result has 357 places, 322 transitions, 3347 flow [2024-06-27 19:48:02,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=357, PETRI_TRANSITIONS=322} [2024-06-27 19:48:02,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-27 19:48:02,750 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 322 transitions, 3347 flow [2024-06-27 19:48:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:02,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:02,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:02,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:48:02,751 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:02,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1442530461, now seen corresponding path program 12 times [2024-06-27 19:48:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863372311] [2024-06-27 19:48:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863372311] [2024-06-27 19:48:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863372311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105968329] [2024-06-27 19:48:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:03,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 322 transitions, 3347 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:03,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:03,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:04,347 INFO L124 PetriNetUnfolderBase]: 868/1541 cut-off events. [2024-06-27 19:48:04,347 INFO L125 PetriNetUnfolderBase]: For 164882/164882 co-relation queries the response was YES. [2024-06-27 19:48:04,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10197 conditions, 1541 events. 868/1541 cut-off events. For 164882/164882 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8621 event pairs, 140 based on Foata normal form. 2/1541 useless extension candidates. Maximal degree in co-relation 10038. Up to 1503 conditions per place. [2024-06-27 19:48:04,364 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 318 selfloop transitions, 15 changer transitions 0/335 dead transitions. [2024-06-27 19:48:04,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 335 transitions, 4069 flow [2024-06-27 19:48:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:48:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:48:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:48:04,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 19:48:04,365 INFO L175 Difference]: Start difference. First operand has 357 places, 322 transitions, 3347 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:48:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 335 transitions, 4069 flow [2024-06-27 19:48:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 335 transitions, 4000 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:48:04,934 INFO L231 Difference]: Finished difference. Result has 358 places, 323 transitions, 3342 flow [2024-06-27 19:48:04,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3342, PETRI_PLACES=358, PETRI_TRANSITIONS=323} [2024-06-27 19:48:04,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 19:48:04,935 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 323 transitions, 3342 flow [2024-06-27 19:48:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:04,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:04,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:48:04,935 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:04,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 585451844, now seen corresponding path program 16 times [2024-06-27 19:48:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435133987] [2024-06-27 19:48:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435133987] [2024-06-27 19:48:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435133987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:48:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962475693] [2024-06-27 19:48:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:48:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:48:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:48:05,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:05,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 323 transitions, 3342 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:05,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:05,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:05,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:06,365 INFO L124 PetriNetUnfolderBase]: 908/1621 cut-off events. [2024-06-27 19:48:06,366 INFO L125 PetriNetUnfolderBase]: For 249569/249569 co-relation queries the response was YES. [2024-06-27 19:48:06,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11932 conditions, 1621 events. 908/1621 cut-off events. For 249569/249569 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9105 event pairs, 140 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 11772. Up to 1335 conditions per place. [2024-06-27 19:48:06,384 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 49 changer transitions 0/344 dead transitions. [2024-06-27 19:48:06,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 344 transitions, 4384 flow [2024-06-27 19:48:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:48:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:48:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 19:48:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 19:48:06,385 INFO L175 Difference]: Start difference. First operand has 358 places, 323 transitions, 3342 flow. Second operand 10 states and 123 transitions. [2024-06-27 19:48:06,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 344 transitions, 4384 flow [2024-06-27 19:48:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 344 transitions, 4330 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 19:48:07,208 INFO L231 Difference]: Finished difference. Result has 360 places, 324 transitions, 3418 flow [2024-06-27 19:48:07,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3418, PETRI_PLACES=360, PETRI_TRANSITIONS=324} [2024-06-27 19:48:07,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 19:48:07,208 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 324 transitions, 3418 flow [2024-06-27 19:48:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:07,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:07,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:48:07,209 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:07,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1340578359, now seen corresponding path program 22 times [2024-06-27 19:48:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587717043] [2024-06-27 19:48:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:08,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:08,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587717043] [2024-06-27 19:48:08,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587717043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:08,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:08,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:08,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534772233] [2024-06-27 19:48:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:08,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:08,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:08,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 324 transitions, 3418 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:08,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:08,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:08,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:09,372 INFO L124 PetriNetUnfolderBase]: 904/1615 cut-off events. [2024-06-27 19:48:09,373 INFO L125 PetriNetUnfolderBase]: For 239344/239344 co-relation queries the response was YES. [2024-06-27 19:48:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 1615 events. 904/1615 cut-off events. For 239344/239344 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9091 event pairs, 125 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 11574. Up to 1299 conditions per place. [2024-06-27 19:48:09,391 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 249 selfloop transitions, 89 changer transitions 0/340 dead transitions. [2024-06-27 19:48:09,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 340 transitions, 4374 flow [2024-06-27 19:48:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:09,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:48:09,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:48:09,392 INFO L175 Difference]: Start difference. First operand has 360 places, 324 transitions, 3418 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:48:09,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 340 transitions, 4374 flow [2024-06-27 19:48:10,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 340 transitions, 4147 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 19:48:10,137 INFO L231 Difference]: Finished difference. Result has 361 places, 324 transitions, 3374 flow [2024-06-27 19:48:10,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3374, PETRI_PLACES=361, PETRI_TRANSITIONS=324} [2024-06-27 19:48:10,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-27 19:48:10,144 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 324 transitions, 3374 flow [2024-06-27 19:48:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:10,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:10,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:48:10,146 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:10,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 542929209, now seen corresponding path program 23 times [2024-06-27 19:48:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747694722] [2024-06-27 19:48:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747694722] [2024-06-27 19:48:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747694722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110748842] [2024-06-27 19:48:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:11,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 324 transitions, 3374 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:11,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:11,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:12,566 INFO L124 PetriNetUnfolderBase]: 900/1609 cut-off events. [2024-06-27 19:48:12,566 INFO L125 PetriNetUnfolderBase]: For 229153/229153 co-relation queries the response was YES. [2024-06-27 19:48:12,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11330 conditions, 1609 events. 900/1609 cut-off events. For 229153/229153 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9075 event pairs, 148 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 11171. Up to 1510 conditions per place. [2024-06-27 19:48:12,584 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 30 changer transitions 0/339 dead transitions. [2024-06-27 19:48:12,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 339 transitions, 4090 flow [2024-06-27 19:48:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:48:12,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:48:12,585 INFO L175 Difference]: Start difference. First operand has 361 places, 324 transitions, 3374 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:48:12,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 339 transitions, 4090 flow [2024-06-27 19:48:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 339 transitions, 3869 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 19:48:13,326 INFO L231 Difference]: Finished difference. Result has 362 places, 324 transitions, 3218 flow [2024-06-27 19:48:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3218, PETRI_PLACES=362, PETRI_TRANSITIONS=324} [2024-06-27 19:48:13,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-27 19:48:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 324 transitions, 3218 flow [2024-06-27 19:48:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:13,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:13,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:48:13,327 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:13,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1140917093, now seen corresponding path program 13 times [2024-06-27 19:48:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346465093] [2024-06-27 19:48:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346465093] [2024-06-27 19:48:14,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346465093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470170828] [2024-06-27 19:48:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:14,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:14,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:14,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 324 transitions, 3218 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:14,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:14,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:14,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:15,053 INFO L124 PetriNetUnfolderBase]: 904/1617 cut-off events. [2024-06-27 19:48:15,053 INFO L125 PetriNetUnfolderBase]: For 233073/233073 co-relation queries the response was YES. [2024-06-27 19:48:15,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11195 conditions, 1617 events. 904/1617 cut-off events. For 233073/233073 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9150 event pairs, 154 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 11037. Up to 1558 conditions per place. [2024-06-27 19:48:15,071 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 315 selfloop transitions, 22 changer transitions 0/339 dead transitions. [2024-06-27 19:48:15,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 339 transitions, 3960 flow [2024-06-27 19:48:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:48:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:48:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:48:15,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 19:48:15,072 INFO L175 Difference]: Start difference. First operand has 362 places, 324 transitions, 3218 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:48:15,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 339 transitions, 3960 flow [2024-06-27 19:48:15,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 339 transitions, 3879 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:48:15,708 INFO L231 Difference]: Finished difference. Result has 362 places, 325 transitions, 3217 flow [2024-06-27 19:48:15,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3137, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3217, PETRI_PLACES=362, PETRI_TRANSITIONS=325} [2024-06-27 19:48:15,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-27 19:48:15,709 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 325 transitions, 3217 flow [2024-06-27 19:48:15,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:15,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:15,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:15,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:48:15,709 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2071743605, now seen corresponding path program 24 times [2024-06-27 19:48:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107817357] [2024-06-27 19:48:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:16,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:16,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107817357] [2024-06-27 19:48:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107817357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:16,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983880544] [2024-06-27 19:48:16,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:17,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:17,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 325 transitions, 3217 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:17,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:17,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:17,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:17,672 INFO L124 PetriNetUnfolderBase]: 910/1627 cut-off events. [2024-06-27 19:48:17,672 INFO L125 PetriNetUnfolderBase]: For 236861/236861 co-relation queries the response was YES. [2024-06-27 19:48:17,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11242 conditions, 1627 events. 910/1627 cut-off events. For 236861/236861 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9213 event pairs, 147 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 11083. Up to 1513 conditions per place. [2024-06-27 19:48:17,690 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 34 changer transitions 0/344 dead transitions. [2024-06-27 19:48:17,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 344 transitions, 4225 flow [2024-06-27 19:48:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:48:17,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 19:48:17,691 INFO L175 Difference]: Start difference. First operand has 362 places, 325 transitions, 3217 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:48:17,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 344 transitions, 4225 flow [2024-06-27 19:48:18,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 344 transitions, 4155 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:48:18,474 INFO L231 Difference]: Finished difference. Result has 365 places, 327 transitions, 3254 flow [2024-06-27 19:48:18,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3254, PETRI_PLACES=365, PETRI_TRANSITIONS=327} [2024-06-27 19:48:18,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-27 19:48:18,474 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 327 transitions, 3254 flow [2024-06-27 19:48:18,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:18,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:18,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:48:18,475 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:18,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507783, now seen corresponding path program 14 times [2024-06-27 19:48:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533808948] [2024-06-27 19:48:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:19,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533808948] [2024-06-27 19:48:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533808948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:48:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360941982] [2024-06-27 19:48:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:19,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:48:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:48:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:48:19,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:19,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 327 transitions, 3254 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:19,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:19,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:19,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:19,910 INFO L124 PetriNetUnfolderBase]: 914/1635 cut-off events. [2024-06-27 19:48:19,910 INFO L125 PetriNetUnfolderBase]: For 240818/240818 co-relation queries the response was YES. [2024-06-27 19:48:19,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11338 conditions, 1635 events. 914/1635 cut-off events. For 240818/240818 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9282 event pairs, 160 based on Foata normal form. 2/1635 useless extension candidates. Maximal degree in co-relation 11178. Up to 1585 conditions per place. [2024-06-27 19:48:19,931 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 320 selfloop transitions, 20 changer transitions 0/342 dead transitions. [2024-06-27 19:48:19,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 342 transitions, 4012 flow [2024-06-27 19:48:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:48:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:48:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:48:19,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 19:48:19,932 INFO L175 Difference]: Start difference. First operand has 365 places, 327 transitions, 3254 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:48:19,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 342 transitions, 4012 flow [2024-06-27 19:48:20,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 342 transitions, 3922 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:48:20,758 INFO L231 Difference]: Finished difference. Result has 367 places, 329 transitions, 3259 flow [2024-06-27 19:48:20,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3259, PETRI_PLACES=367, PETRI_TRANSITIONS=329} [2024-06-27 19:48:20,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-27 19:48:20,759 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 329 transitions, 3259 flow [2024-06-27 19:48:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:20,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:20,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:20,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:48:20,759 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:20,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 792535595, now seen corresponding path program 15 times [2024-06-27 19:48:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:20,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964443071] [2024-06-27 19:48:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:20,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:21,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964443071] [2024-06-27 19:48:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964443071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566761180] [2024-06-27 19:48:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:21,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:21,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:21,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 329 transitions, 3259 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:21,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:21,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:21,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:22,511 INFO L124 PetriNetUnfolderBase]: 911/1630 cut-off events. [2024-06-27 19:48:22,511 INFO L125 PetriNetUnfolderBase]: For 229495/229495 co-relation queries the response was YES. [2024-06-27 19:48:22,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11025 conditions, 1630 events. 911/1630 cut-off events. For 229495/229495 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9246 event pairs, 159 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 10863. Up to 1580 conditions per place. [2024-06-27 19:48:22,530 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 321 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2024-06-27 19:48:22,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 342 transitions, 3971 flow [2024-06-27 19:48:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:48:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:48:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:48:22,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:48:22,531 INFO L175 Difference]: Start difference. First operand has 367 places, 329 transitions, 3259 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:48:22,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 342 transitions, 3971 flow [2024-06-27 19:48:23,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 342 transitions, 3906 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:48:23,271 INFO L231 Difference]: Finished difference. Result has 370 places, 329 transitions, 3236 flow [2024-06-27 19:48:23,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3236, PETRI_PLACES=370, PETRI_TRANSITIONS=329} [2024-06-27 19:48:23,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 19:48:23,272 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 329 transitions, 3236 flow [2024-06-27 19:48:23,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:23,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:23,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:23,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:48:23,272 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:23,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1140925029, now seen corresponding path program 25 times [2024-06-27 19:48:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169878772] [2024-06-27 19:48:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:24,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169878772] [2024-06-27 19:48:24,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169878772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787160013] [2024-06-27 19:48:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:24,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:24,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:24,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 329 transitions, 3236 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:24,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:24,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:24,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:25,724 INFO L124 PetriNetUnfolderBase]: 907/1624 cut-off events. [2024-06-27 19:48:25,724 INFO L125 PetriNetUnfolderBase]: For 216862/216862 co-relation queries the response was YES. [2024-06-27 19:48:25,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10720 conditions, 1624 events. 907/1624 cut-off events. For 216862/216862 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9219 event pairs, 152 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 10557. Up to 1513 conditions per place. [2024-06-27 19:48:25,742 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 35 changer transitions 0/345 dead transitions. [2024-06-27 19:48:25,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 345 transitions, 3968 flow [2024-06-27 19:48:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:48:25,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 19:48:25,743 INFO L175 Difference]: Start difference. First operand has 370 places, 329 transitions, 3236 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:48:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 345 transitions, 3968 flow [2024-06-27 19:48:26,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 345 transitions, 3827 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:48:26,527 INFO L231 Difference]: Finished difference. Result has 372 places, 329 transitions, 3170 flow [2024-06-27 19:48:26,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3170, PETRI_PLACES=372, PETRI_TRANSITIONS=329} [2024-06-27 19:48:26,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-27 19:48:26,527 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 329 transitions, 3170 flow [2024-06-27 19:48:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:26,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:26,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:48:26,527 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:26,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:26,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1141132574, now seen corresponding path program 17 times [2024-06-27 19:48:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446328462] [2024-06-27 19:48:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446328462] [2024-06-27 19:48:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446328462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348614089] [2024-06-27 19:48:27,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:27,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:27,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:27,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 329 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:27,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:27,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:27,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:28,304 INFO L124 PetriNetUnfolderBase]: 906/1629 cut-off events. [2024-06-27 19:48:28,304 INFO L125 PetriNetUnfolderBase]: For 250110/250110 co-relation queries the response was YES. [2024-06-27 19:48:28,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9897 conditions, 1629 events. 906/1629 cut-off events. For 250110/250110 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9265 event pairs, 155 based on Foata normal form. 12/1639 useless extension candidates. Maximal degree in co-relation 9733. Up to 1512 conditions per place. [2024-06-27 19:48:28,323 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 315 selfloop transitions, 26 changer transitions 6/349 dead transitions. [2024-06-27 19:48:28,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 349 transitions, 3950 flow [2024-06-27 19:48:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:48:28,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:48:28,324 INFO L175 Difference]: Start difference. First operand has 372 places, 329 transitions, 3170 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:48:28,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 349 transitions, 3950 flow [2024-06-27 19:48:28,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 349 transitions, 3752 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 19:48:28,960 INFO L231 Difference]: Finished difference. Result has 370 places, 328 transitions, 3021 flow [2024-06-27 19:48:28,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3021, PETRI_PLACES=370, PETRI_TRANSITIONS=328} [2024-06-27 19:48:28,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 19:48:28,961 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 328 transitions, 3021 flow [2024-06-27 19:48:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:28,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:28,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:48:28,961 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:28,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash -128153116, now seen corresponding path program 1 times [2024-06-27 19:48:28,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:28,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260713963] [2024-06-27 19:48:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:29,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260713963] [2024-06-27 19:48:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260713963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:29,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:29,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746049988] [2024-06-27 19:48:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:30,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:30,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 328 transitions, 3021 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:30,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:30,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:30,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:30,687 INFO L124 PetriNetUnfolderBase]: 948/1719 cut-off events. [2024-06-27 19:48:30,687 INFO L125 PetriNetUnfolderBase]: For 316429/316429 co-relation queries the response was YES. [2024-06-27 19:48:30,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11482 conditions, 1719 events. 948/1719 cut-off events. For 316429/316429 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9896 event pairs, 162 based on Foata normal form. 8/1725 useless extension candidates. Maximal degree in co-relation 11319. Up to 1435 conditions per place. [2024-06-27 19:48:30,708 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 320 selfloop transitions, 23 changer transitions 16/361 dead transitions. [2024-06-27 19:48:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 361 transitions, 4137 flow [2024-06-27 19:48:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:48:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:48:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 19:48:30,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-27 19:48:30,709 INFO L175 Difference]: Start difference. First operand has 370 places, 328 transitions, 3021 flow. Second operand 12 states and 146 transitions. [2024-06-27 19:48:30,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 361 transitions, 4137 flow [2024-06-27 19:48:31,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 361 transitions, 4024 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-27 19:48:31,657 INFO L231 Difference]: Finished difference. Result has 370 places, 324 transitions, 2930 flow [2024-06-27 19:48:31,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2930, PETRI_PLACES=370, PETRI_TRANSITIONS=324} [2024-06-27 19:48:31,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 19:48:31,657 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 324 transitions, 2930 flow [2024-06-27 19:48:31,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:31,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:31,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:31,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:48:31,657 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:31,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1865829320, now seen corresponding path program 2 times [2024-06-27 19:48:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742605231] [2024-06-27 19:48:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:31,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:33,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:33,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742605231] [2024-06-27 19:48:33,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742605231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708928595] [2024-06-27 19:48:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:33,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:33,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 324 transitions, 2930 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:33,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:33,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:33,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:34,040 INFO L124 PetriNetUnfolderBase]: 943/1710 cut-off events. [2024-06-27 19:48:34,040 INFO L125 PetriNetUnfolderBase]: For 337931/337931 co-relation queries the response was YES. [2024-06-27 19:48:34,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11598 conditions, 1710 events. 943/1710 cut-off events. For 337931/337931 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9882 event pairs, 159 based on Foata normal form. 8/1716 useless extension candidates. Maximal degree in co-relation 11436. Up to 1497 conditions per place. [2024-06-27 19:48:34,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 322 selfloop transitions, 26 changer transitions 10/360 dead transitions. [2024-06-27 19:48:34,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 360 transitions, 4048 flow [2024-06-27 19:48:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:48:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:48:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-27 19:48:34,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3920595533498759 [2024-06-27 19:48:34,061 INFO L175 Difference]: Start difference. First operand has 370 places, 324 transitions, 2930 flow. Second operand 13 states and 158 transitions. [2024-06-27 19:48:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 360 transitions, 4048 flow [2024-06-27 19:48:35,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 360 transitions, 3926 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 19:48:35,008 INFO L231 Difference]: Finished difference. Result has 366 places, 322 transitions, 2856 flow [2024-06-27 19:48:35,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2856, PETRI_PLACES=366, PETRI_TRANSITIONS=322} [2024-06-27 19:48:35,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 19:48:35,009 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 322 transitions, 2856 flow [2024-06-27 19:48:35,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:35,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:35,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:48:35,009 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:35,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash -69940696, now seen corresponding path program 3 times [2024-06-27 19:48:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644696235] [2024-06-27 19:48:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:36,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644696235] [2024-06-27 19:48:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644696235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:36,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:36,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150552687] [2024-06-27 19:48:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:36,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:36,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:36,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:36,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 322 transitions, 2856 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:36,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:36,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:36,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:37,223 INFO L124 PetriNetUnfolderBase]: 930/1687 cut-off events. [2024-06-27 19:48:37,223 INFO L125 PetriNetUnfolderBase]: For 322088/322088 co-relation queries the response was YES. [2024-06-27 19:48:37,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1687 events. 930/1687 cut-off events. For 322088/322088 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9740 event pairs, 168 based on Foata normal form. 10/1695 useless extension candidates. Maximal degree in co-relation 10885. Up to 1553 conditions per place. [2024-06-27 19:48:37,242 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 312 selfloop transitions, 25 changer transitions 11/350 dead transitions. [2024-06-27 19:48:37,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 350 transitions, 3660 flow [2024-06-27 19:48:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:48:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:48:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-27 19:48:37,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-27 19:48:37,243 INFO L175 Difference]: Start difference. First operand has 366 places, 322 transitions, 2856 flow. Second operand 13 states and 150 transitions. [2024-06-27 19:48:37,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 350 transitions, 3660 flow [2024-06-27 19:48:38,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 350 transitions, 3605 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:48:38,038 INFO L231 Difference]: Finished difference. Result has 364 places, 319 transitions, 2829 flow [2024-06-27 19:48:38,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2829, PETRI_PLACES=364, PETRI_TRANSITIONS=319} [2024-06-27 19:48:38,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-27 19:48:38,038 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 319 transitions, 2829 flow [2024-06-27 19:48:38,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:38,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:38,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:38,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:48:38,038 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:38,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash -162831090, now seen corresponding path program 4 times [2024-06-27 19:48:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773849608] [2024-06-27 19:48:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:39,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773849608] [2024-06-27 19:48:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773849608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:39,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:39,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:39,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962054447] [2024-06-27 19:48:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:39,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:39,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 319 transitions, 2829 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:39,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:39,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:39,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:40,163 INFO L124 PetriNetUnfolderBase]: 930/1695 cut-off events. [2024-06-27 19:48:40,163 INFO L125 PetriNetUnfolderBase]: For 367254/367254 co-relation queries the response was YES. [2024-06-27 19:48:40,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1695 events. 930/1695 cut-off events. For 367254/367254 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9829 event pairs, 158 based on Foata normal form. 16/1709 useless extension candidates. Maximal degree in co-relation 10877. Up to 1453 conditions per place. [2024-06-27 19:48:40,183 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 314 selfloop transitions, 22 changer transitions 15/353 dead transitions. [2024-06-27 19:48:40,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 353 transitions, 3927 flow [2024-06-27 19:48:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:48:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:48:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-27 19:48:40,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-27 19:48:40,184 INFO L175 Difference]: Start difference. First operand has 364 places, 319 transitions, 2829 flow. Second operand 14 states and 160 transitions. [2024-06-27 19:48:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 353 transitions, 3927 flow [2024-06-27 19:48:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 353 transitions, 3873 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:48:41,041 INFO L231 Difference]: Finished difference. Result has 364 places, 313 transitions, 2771 flow [2024-06-27 19:48:41,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2771, PETRI_PLACES=364, PETRI_TRANSITIONS=313} [2024-06-27 19:48:41,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-27 19:48:41,041 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 313 transitions, 2771 flow [2024-06-27 19:48:41,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:41,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:41,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:48:41,042 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:41,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1677461882, now seen corresponding path program 5 times [2024-06-27 19:48:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:41,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489903208] [2024-06-27 19:48:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:42,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489903208] [2024-06-27 19:48:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489903208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:42,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:42,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410782966] [2024-06-27 19:48:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:42,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:42,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:42,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 313 transitions, 2771 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:42,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:42,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:42,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:43,005 INFO L124 PetriNetUnfolderBase]: 907/1645 cut-off events. [2024-06-27 19:48:43,005 INFO L125 PetriNetUnfolderBase]: For 322156/322156 co-relation queries the response was YES. [2024-06-27 19:48:43,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10607 conditions, 1645 events. 907/1645 cut-off events. For 322156/322156 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9432 event pairs, 165 based on Foata normal form. 12/1655 useless extension candidates. Maximal degree in co-relation 10450. Up to 1522 conditions per place. [2024-06-27 19:48:43,024 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 22 changer transitions 11/342 dead transitions. [2024-06-27 19:48:43,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 342 transitions, 3581 flow [2024-06-27 19:48:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 19:48:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 19:48:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-06-27 19:48:43,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35253456221198154 [2024-06-27 19:48:43,025 INFO L175 Difference]: Start difference. First operand has 364 places, 313 transitions, 2771 flow. Second operand 14 states and 153 transitions. [2024-06-27 19:48:43,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 342 transitions, 3581 flow [2024-06-27 19:48:43,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 342 transitions, 3529 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:48:43,746 INFO L231 Difference]: Finished difference. Result has 358 places, 311 transitions, 2764 flow [2024-06-27 19:48:43,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2764, PETRI_PLACES=358, PETRI_TRANSITIONS=311} [2024-06-27 19:48:43,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 19:48:43,746 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 311 transitions, 2764 flow [2024-06-27 19:48:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:43,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:43,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:43,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:48:43,746 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:43,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1677581852, now seen corresponding path program 6 times [2024-06-27 19:48:43,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:43,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325680314] [2024-06-27 19:48:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:43,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:45,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:45,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325680314] [2024-06-27 19:48:45,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325680314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:45,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367025978] [2024-06-27 19:48:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:45,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:45,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 311 transitions, 2764 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:45,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:45,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:45,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:46,314 INFO L124 PetriNetUnfolderBase]: 885/1607 cut-off events. [2024-06-27 19:48:46,314 INFO L125 PetriNetUnfolderBase]: For 270654/270654 co-relation queries the response was YES. [2024-06-27 19:48:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 1607 events. 885/1607 cut-off events. For 270654/270654 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9165 event pairs, 150 based on Foata normal form. 8/1613 useless extension candidates. Maximal degree in co-relation 10032. Up to 1432 conditions per place. [2024-06-27 19:48:46,333 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 17 changer transitions 11/340 dead transitions. [2024-06-27 19:48:46,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 340 transitions, 3806 flow [2024-06-27 19:48:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:48:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:48:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:48:46,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:48:46,334 INFO L175 Difference]: Start difference. First operand has 358 places, 311 transitions, 2764 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:48:46,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 340 transitions, 3806 flow [2024-06-27 19:48:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 340 transitions, 3738 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-27 19:48:46,898 INFO L231 Difference]: Finished difference. Result has 354 places, 307 transitions, 2711 flow [2024-06-27 19:48:46,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2711, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2024-06-27 19:48:46,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-27 19:48:46,898 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 2711 flow [2024-06-27 19:48:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:46,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:46,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:48:46,899 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:46,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1672820252, now seen corresponding path program 7 times [2024-06-27 19:48:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368513346] [2024-06-27 19:48:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368513346] [2024-06-27 19:48:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368513346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043453524] [2024-06-27 19:48:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:48,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 2711 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:49,286 INFO L124 PetriNetUnfolderBase]: 849/1535 cut-off events. [2024-06-27 19:48:49,287 INFO L125 PetriNetUnfolderBase]: For 211731/211731 co-relation queries the response was YES. [2024-06-27 19:48:49,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8680 conditions, 1535 events. 849/1535 cut-off events. For 211731/211731 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8679 event pairs, 139 based on Foata normal form. 10/1543 useless extension candidates. Maximal degree in co-relation 8524. Up to 1426 conditions per place. [2024-06-27 19:48:49,304 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 17 changer transitions 9/330 dead transitions. [2024-06-27 19:48:49,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 330 transitions, 3457 flow [2024-06-27 19:48:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:48:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:48:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 19:48:49,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 19:48:49,305 INFO L175 Difference]: Start difference. First operand has 354 places, 307 transitions, 2711 flow. Second operand 12 states and 131 transitions. [2024-06-27 19:48:49,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 330 transitions, 3457 flow [2024-06-27 19:48:49,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 330 transitions, 3419 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:48:49,807 INFO L231 Difference]: Finished difference. Result has 350 places, 304 transitions, 2689 flow [2024-06-27 19:48:49,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2689, PETRI_PLACES=350, PETRI_TRANSITIONS=304} [2024-06-27 19:48:49,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-27 19:48:49,808 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 304 transitions, 2689 flow [2024-06-27 19:48:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:48:49,808 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1342597636, now seen corresponding path program 1 times [2024-06-27 19:48:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889096765] [2024-06-27 19:48:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:51,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:51,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889096765] [2024-06-27 19:48:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889096765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:51,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:51,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25194296] [2024-06-27 19:48:51,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:51,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:51,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 304 transitions, 2689 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:51,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:51,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:51,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:51,608 INFO L124 PetriNetUnfolderBase]: 843/1529 cut-off events. [2024-06-27 19:48:51,608 INFO L125 PetriNetUnfolderBase]: For 219452/219452 co-relation queries the response was YES. [2024-06-27 19:48:51,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8622 conditions, 1529 events. 843/1529 cut-off events. For 219452/219452 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8661 event pairs, 115 based on Foata normal form. 12/1539 useless extension candidates. Maximal degree in co-relation 8468. Up to 826 conditions per place. [2024-06-27 19:48:51,622 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 139 changer transitions 7/327 dead transitions. [2024-06-27 19:48:51,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 327 transitions, 3443 flow [2024-06-27 19:48:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 19:48:51,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 19:48:51,622 INFO L175 Difference]: Start difference. First operand has 350 places, 304 transitions, 2689 flow. Second operand 11 states and 143 transitions. [2024-06-27 19:48:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 327 transitions, 3443 flow [2024-06-27 19:48:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 327 transitions, 3401 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:48:52,093 INFO L231 Difference]: Finished difference. Result has 346 places, 302 transitions, 2928 flow [2024-06-27 19:48:52,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2928, PETRI_PLACES=346, PETRI_TRANSITIONS=302} [2024-06-27 19:48:52,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-27 19:48:52,093 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 302 transitions, 2928 flow [2024-06-27 19:48:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:52,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:52,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:52,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:48:52,093 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1914045498, now seen corresponding path program 8 times [2024-06-27 19:48:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176832171] [2024-06-27 19:48:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:53,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176832171] [2024-06-27 19:48:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176832171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:53,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:48:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633990780] [2024-06-27 19:48:53,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:53,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:48:53,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:48:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:48:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:53,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 302 transitions, 2928 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:54,154 INFO L124 PetriNetUnfolderBase]: 835/1517 cut-off events. [2024-06-27 19:48:54,154 INFO L125 PetriNetUnfolderBase]: For 202199/202199 co-relation queries the response was YES. [2024-06-27 19:48:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8882 conditions, 1517 events. 835/1517 cut-off events. For 202199/202199 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8599 event pairs, 82 based on Foata normal form. 10/1525 useless extension candidates. Maximal degree in co-relation 8729. Up to 1061 conditions per place. [2024-06-27 19:48:54,170 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 215 selfloop transitions, 98 changer transitions 11/326 dead transitions. [2024-06-27 19:48:54,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 326 transitions, 3670 flow [2024-06-27 19:48:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:48:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:48:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:48:54,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:48:54,171 INFO L175 Difference]: Start difference. First operand has 346 places, 302 transitions, 2928 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:48:54,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 326 transitions, 3670 flow [2024-06-27 19:48:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 326 transitions, 3377 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 19:48:54,661 INFO L231 Difference]: Finished difference. Result has 348 places, 299 transitions, 2816 flow [2024-06-27 19:48:54,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2816, PETRI_PLACES=348, PETRI_TRANSITIONS=299} [2024-06-27 19:48:54,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-27 19:48:54,662 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 299 transitions, 2816 flow [2024-06-27 19:48:54,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:54,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:54,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:48:54,662 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1747634088, now seen corresponding path program 9 times [2024-06-27 19:48:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682544904] [2024-06-27 19:48:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682544904] [2024-06-27 19:48:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682544904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988231390] [2024-06-27 19:48:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:55,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:55,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:55,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 299 transitions, 2816 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:55,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:55,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:55,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:56,336 INFO L124 PetriNetUnfolderBase]: 857/1567 cut-off events. [2024-06-27 19:48:56,336 INFO L125 PetriNetUnfolderBase]: For 277840/277840 co-relation queries the response was YES. [2024-06-27 19:48:56,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10409 conditions, 1567 events. 857/1567 cut-off events. For 277840/277840 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8940 event pairs, 129 based on Foata normal form. 8/1573 useless extension candidates. Maximal degree in co-relation 10255. Up to 792 conditions per place. [2024-06-27 19:48:56,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 131 changer transitions 9/327 dead transitions. [2024-06-27 19:48:56,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 327 transitions, 3842 flow [2024-06-27 19:48:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 19:48:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 19:48:56,354 INFO L175 Difference]: Start difference. First operand has 348 places, 299 transitions, 2816 flow. Second operand 11 states and 146 transitions. [2024-06-27 19:48:56,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 327 transitions, 3842 flow [2024-06-27 19:48:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 327 transitions, 3638 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:48:57,090 INFO L231 Difference]: Finished difference. Result has 345 places, 295 transitions, 2857 flow [2024-06-27 19:48:57,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2857, PETRI_PLACES=345, PETRI_TRANSITIONS=295} [2024-06-27 19:48:57,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-27 19:48:57,090 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 295 transitions, 2857 flow [2024-06-27 19:48:57,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:57,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:57,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:57,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:48:57,091 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:57,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1913867868, now seen corresponding path program 10 times [2024-06-27 19:48:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207641403] [2024-06-27 19:48:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:48:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:48:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:48:58,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207641403] [2024-06-27 19:48:58,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207641403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:48:58,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:48:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:48:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319469610] [2024-06-27 19:48:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:48:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:48:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:48:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:48:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:48:58,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:48:58,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 295 transitions, 2857 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:58,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:48:58,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:48:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:48:58,749 INFO L124 PetriNetUnfolderBase]: 881/1619 cut-off events. [2024-06-27 19:48:58,749 INFO L125 PetriNetUnfolderBase]: For 357977/357977 co-relation queries the response was YES. [2024-06-27 19:48:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 1619 events. 881/1619 cut-off events. For 357977/357977 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9355 event pairs, 153 based on Foata normal form. 8/1625 useless extension candidates. Maximal degree in co-relation 11969. Up to 850 conditions per place. [2024-06-27 19:48:58,767 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 131 changer transitions 8/322 dead transitions. [2024-06-27 19:48:58,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 322 transitions, 3867 flow [2024-06-27 19:48:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:48:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:48:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 19:48:58,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 19:48:58,768 INFO L175 Difference]: Start difference. First operand has 345 places, 295 transitions, 2857 flow. Second operand 11 states and 145 transitions. [2024-06-27 19:48:58,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 322 transitions, 3867 flow [2024-06-27 19:48:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 322 transitions, 3598 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:48:59,746 INFO L231 Difference]: Finished difference. Result has 342 places, 292 transitions, 2839 flow [2024-06-27 19:48:59,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2839, PETRI_PLACES=342, PETRI_TRANSITIONS=292} [2024-06-27 19:48:59,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-27 19:48:59,746 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 292 transitions, 2839 flow [2024-06-27 19:48:59,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:48:59,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:48:59,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:48:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:48:59,747 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:48:59,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:48:59,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1920539192, now seen corresponding path program 2 times [2024-06-27 19:48:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:48:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987640459] [2024-06-27 19:48:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:48:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:48:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987640459] [2024-06-27 19:49:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987640459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844057258] [2024-06-27 19:49:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:01,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:01,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:01,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:01,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 292 transitions, 2839 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:01,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:01,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:01,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:02,134 INFO L124 PetriNetUnfolderBase]: 859/1573 cut-off events. [2024-06-27 19:49:02,135 INFO L125 PetriNetUnfolderBase]: For 291393/291393 co-relation queries the response was YES. [2024-06-27 19:49:02,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 1573 events. 859/1573 cut-off events. For 291393/291393 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8966 event pairs, 154 based on Foata normal form. 2/1573 useless extension candidates. Maximal degree in co-relation 11505. Up to 929 conditions per place. [2024-06-27 19:49:02,154 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 139 changer transitions 0/311 dead transitions. [2024-06-27 19:49:02,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 311 transitions, 3525 flow [2024-06-27 19:49:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 19:49:02,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 19:49:02,156 INFO L175 Difference]: Start difference. First operand has 342 places, 292 transitions, 2839 flow. Second operand 11 states and 138 transitions. [2024-06-27 19:49:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 311 transitions, 3525 flow [2024-06-27 19:49:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 311 transitions, 3240 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 19:49:03,156 INFO L231 Difference]: Finished difference. Result has 337 places, 293 transitions, 2856 flow [2024-06-27 19:49:03,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2554, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2856, PETRI_PLACES=337, PETRI_TRANSITIONS=293} [2024-06-27 19:49:03,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-27 19:49:03,156 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 293 transitions, 2856 flow [2024-06-27 19:49:03,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:03,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:03,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:03,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:49:03,157 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:03,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1920547562, now seen corresponding path program 3 times [2024-06-27 19:49:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057348666] [2024-06-27 19:49:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057348666] [2024-06-27 19:49:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057348666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:04,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827083947] [2024-06-27 19:49:04,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:04,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:04,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 293 transitions, 2856 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:04,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:04,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:04,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:05,525 INFO L124 PetriNetUnfolderBase]: 892/1640 cut-off events. [2024-06-27 19:49:05,525 INFO L125 PetriNetUnfolderBase]: For 355250/355250 co-relation queries the response was YES. [2024-06-27 19:49:05,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13075 conditions, 1640 events. 892/1640 cut-off events. For 355250/355250 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9526 event pairs, 159 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 12925. Up to 896 conditions per place. [2024-06-27 19:49:05,543 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 143 changer transitions 0/318 dead transitions. [2024-06-27 19:49:05,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 318 transitions, 3850 flow [2024-06-27 19:49:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 19:49:05,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 19:49:05,544 INFO L175 Difference]: Start difference. First operand has 337 places, 293 transitions, 2856 flow. Second operand 11 states and 143 transitions. [2024-06-27 19:49:05,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 318 transitions, 3850 flow [2024-06-27 19:49:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 318 transitions, 3558 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 19:49:06,602 INFO L231 Difference]: Finished difference. Result has 339 places, 295 transitions, 2896 flow [2024-06-27 19:49:06,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=339, PETRI_TRANSITIONS=295} [2024-06-27 19:49:06,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 19:49:06,602 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 295 transitions, 2896 flow [2024-06-27 19:49:06,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:06,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:06,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:06,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:49:06,603 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:06,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1920301608, now seen corresponding path program 11 times [2024-06-27 19:49:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294036071] [2024-06-27 19:49:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294036071] [2024-06-27 19:49:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294036071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:08,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:08,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264643060] [2024-06-27 19:49:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:08,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:08,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 295 transitions, 2896 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:08,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:08,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:08,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:09,097 INFO L124 PetriNetUnfolderBase]: 894/1650 cut-off events. [2024-06-27 19:49:09,097 INFO L125 PetriNetUnfolderBase]: For 387317/387317 co-relation queries the response was YES. [2024-06-27 19:49:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12680 conditions, 1650 events. 894/1650 cut-off events. For 387317/387317 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9670 event pairs, 141 based on Foata normal form. 10/1658 useless extension candidates. Maximal degree in co-relation 12529. Up to 1213 conditions per place. [2024-06-27 19:49:09,115 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 93 changer transitions 9/318 dead transitions. [2024-06-27 19:49:09,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 318 transitions, 3618 flow [2024-06-27 19:49:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 19:49:09,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-27 19:49:09,116 INFO L175 Difference]: Start difference. First operand has 339 places, 295 transitions, 2896 flow. Second operand 12 states and 146 transitions. [2024-06-27 19:49:09,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 318 transitions, 3618 flow [2024-06-27 19:49:09,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 318 transitions, 3426 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:49:09,971 INFO L231 Difference]: Finished difference. Result has 344 places, 292 transitions, 2873 flow [2024-06-27 19:49:09,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2873, PETRI_PLACES=344, PETRI_TRANSITIONS=292} [2024-06-27 19:49:09,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-27 19:49:09,971 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 292 transitions, 2873 flow [2024-06-27 19:49:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:09,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:09,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:09,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:49:09,972 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:09,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1743170088, now seen corresponding path program 12 times [2024-06-27 19:49:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:09,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63884501] [2024-06-27 19:49:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:09,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63884501] [2024-06-27 19:49:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63884501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:11,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:11,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718175845] [2024-06-27 19:49:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:11,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:11,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 292 transitions, 2873 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:11,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:11,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:11,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:12,286 INFO L124 PetriNetUnfolderBase]: 890/1646 cut-off events. [2024-06-27 19:49:12,286 INFO L125 PetriNetUnfolderBase]: For 394804/394804 co-relation queries the response was YES. [2024-06-27 19:49:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 1646 events. 890/1646 cut-off events. For 394804/394804 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9671 event pairs, 139 based on Foata normal form. 10/1654 useless extension candidates. Maximal degree in co-relation 12671. Up to 1194 conditions per place. [2024-06-27 19:49:12,304 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 92 changer transitions 13/318 dead transitions. [2024-06-27 19:49:12,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 318 transitions, 3615 flow [2024-06-27 19:49:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:49:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:49:12,305 INFO L175 Difference]: Start difference. First operand has 344 places, 292 transitions, 2873 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:49:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 318 transitions, 3615 flow [2024-06-27 19:49:13,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 318 transitions, 3423 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:49:13,297 INFO L231 Difference]: Finished difference. Result has 342 places, 290 transitions, 2856 flow [2024-06-27 19:49:13,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2856, PETRI_PLACES=342, PETRI_TRANSITIONS=290} [2024-06-27 19:49:13,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-27 19:49:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 290 transitions, 2856 flow [2024-06-27 19:49:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:13,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:13,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:49:13,298 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1747638738, now seen corresponding path program 13 times [2024-06-27 19:49:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969254442] [2024-06-27 19:49:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:14,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:14,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969254442] [2024-06-27 19:49:14,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969254442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:14,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650507239] [2024-06-27 19:49:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:14,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:14,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:14,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 290 transitions, 2856 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:14,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:14,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:14,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:15,313 INFO L124 PetriNetUnfolderBase]: 852/1572 cut-off events. [2024-06-27 19:49:15,313 INFO L125 PetriNetUnfolderBase]: For 319175/319175 co-relation queries the response was YES. [2024-06-27 19:49:15,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11319 conditions, 1572 events. 852/1572 cut-off events. For 319175/319175 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9061 event pairs, 114 based on Foata normal form. 10/1580 useless extension candidates. Maximal degree in co-relation 11167. Up to 1095 conditions per place. [2024-06-27 19:49:15,331 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 202 selfloop transitions, 101 changer transitions 12/317 dead transitions. [2024-06-27 19:49:15,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 317 transitions, 3616 flow [2024-06-27 19:49:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 19:49:15,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 19:49:15,331 INFO L175 Difference]: Start difference. First operand has 342 places, 290 transitions, 2856 flow. Second operand 12 states and 152 transitions. [2024-06-27 19:49:15,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 317 transitions, 3616 flow [2024-06-27 19:49:16,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 317 transitions, 3436 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:49:16,202 INFO L231 Difference]: Finished difference. Result has 343 places, 288 transitions, 2961 flow [2024-06-27 19:49:16,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2961, PETRI_PLACES=343, PETRI_TRANSITIONS=288} [2024-06-27 19:49:16,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 19:49:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 288 transitions, 2961 flow [2024-06-27 19:49:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:16,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:16,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:16,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:49:16,203 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:16,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:16,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1747811718, now seen corresponding path program 14 times [2024-06-27 19:49:16,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:16,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340558029] [2024-06-27 19:49:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:17,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340558029] [2024-06-27 19:49:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340558029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53095698] [2024-06-27 19:49:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:17,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:17,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 288 transitions, 2961 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:17,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:17,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:17,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:18,406 INFO L124 PetriNetUnfolderBase]: 829/1531 cut-off events. [2024-06-27 19:49:18,406 INFO L125 PetriNetUnfolderBase]: For 290280/290280 co-relation queries the response was YES. [2024-06-27 19:49:18,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10864 conditions, 1531 events. 829/1531 cut-off events. For 290280/290280 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8762 event pairs, 115 based on Foata normal form. 10/1539 useless extension candidates. Maximal degree in co-relation 10711. Up to 1075 conditions per place. [2024-06-27 19:49:18,423 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 206 selfloop transitions, 93 changer transitions 11/312 dead transitions. [2024-06-27 19:49:18,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 312 transitions, 3675 flow [2024-06-27 19:49:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:49:18,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 19:49:18,423 INFO L175 Difference]: Start difference. First operand has 343 places, 288 transitions, 2961 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:49:18,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 312 transitions, 3675 flow [2024-06-27 19:49:19,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 312 transitions, 3518 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:19,151 INFO L231 Difference]: Finished difference. Result has 341 places, 285 transitions, 2971 flow [2024-06-27 19:49:19,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2971, PETRI_PLACES=341, PETRI_TRANSITIONS=285} [2024-06-27 19:49:19,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-27 19:49:19,152 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 285 transitions, 2971 flow [2024-06-27 19:49:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:49:19,152 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:19,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1743050118, now seen corresponding path program 15 times [2024-06-27 19:49:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:19,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782637258] [2024-06-27 19:49:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:19,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:20,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782637258] [2024-06-27 19:49:20,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782637258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:20,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:20,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:20,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159162723] [2024-06-27 19:49:20,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:20,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:20,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:20,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 285 transitions, 2971 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:20,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:20,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:20,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:20,955 INFO L124 PetriNetUnfolderBase]: 815/1509 cut-off events. [2024-06-27 19:49:20,955 INFO L125 PetriNetUnfolderBase]: For 276694/276694 co-relation queries the response was YES. [2024-06-27 19:49:20,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10748 conditions, 1509 events. 815/1509 cut-off events. For 276694/276694 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8703 event pairs, 114 based on Foata normal form. 8/1515 useless extension candidates. Maximal degree in co-relation 10595. Up to 978 conditions per place. [2024-06-27 19:49:20,972 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 84 changer transitions 12/311 dead transitions. [2024-06-27 19:49:20,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 311 transitions, 3919 flow [2024-06-27 19:49:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:49:20,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 19:49:20,973 INFO L175 Difference]: Start difference. First operand has 341 places, 285 transitions, 2971 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:49:20,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 311 transitions, 3919 flow [2024-06-27 19:49:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 311 transitions, 3723 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:21,554 INFO L231 Difference]: Finished difference. Result has 339 places, 281 transitions, 2925 flow [2024-06-27 19:49:21,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2925, PETRI_PLACES=339, PETRI_TRANSITIONS=281} [2024-06-27 19:49:21,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 19:49:21,554 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 281 transitions, 2925 flow [2024-06-27 19:49:21,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:21,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:21,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:49:21,554 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:21,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash -783541100, now seen corresponding path program 4 times [2024-06-27 19:49:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758609695] [2024-06-27 19:49:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:22,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758609695] [2024-06-27 19:49:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758609695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:22,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:22,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918887908] [2024-06-27 19:49:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:22,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:22,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:23,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:23,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 281 transitions, 2925 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:23,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:23,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:23,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:23,452 INFO L124 PetriNetUnfolderBase]: 789/1455 cut-off events. [2024-06-27 19:49:23,452 INFO L125 PetriNetUnfolderBase]: For 218750/218750 co-relation queries the response was YES. [2024-06-27 19:49:23,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10273 conditions, 1455 events. 789/1455 cut-off events. For 218750/218750 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8171 event pairs, 135 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 10121. Up to 844 conditions per place. [2024-06-27 19:49:23,467 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 124 changer transitions 0/299 dead transitions. [2024-06-27 19:49:23,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 299 transitions, 3569 flow [2024-06-27 19:49:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:49:23,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:49:23,468 INFO L175 Difference]: Start difference. First operand has 339 places, 281 transitions, 2925 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:49:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 299 transitions, 3569 flow [2024-06-27 19:49:24,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 3388 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:24,092 INFO L231 Difference]: Finished difference. Result has 333 places, 281 transitions, 2996 flow [2024-06-27 19:49:24,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2996, PETRI_PLACES=333, PETRI_TRANSITIONS=281} [2024-06-27 19:49:24,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 19:49:24,093 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 281 transitions, 2996 flow [2024-06-27 19:49:24,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:24,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:24,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:24,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:49:24,093 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:24,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1942975832, now seen corresponding path program 5 times [2024-06-27 19:49:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976285825] [2024-06-27 19:49:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:25,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976285825] [2024-06-27 19:49:25,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976285825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:25,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:25,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820998374] [2024-06-27 19:49:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:25,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:25,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 281 transitions, 2996 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:25,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:25,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:25,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:26,171 INFO L124 PetriNetUnfolderBase]: 809/1499 cut-off events. [2024-06-27 19:49:26,171 INFO L125 PetriNetUnfolderBase]: For 272453/272453 co-relation queries the response was YES. [2024-06-27 19:49:26,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10438 conditions, 1499 events. 809/1499 cut-off events. For 272453/272453 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8566 event pairs, 124 based on Foata normal form. 12/1509 useless extension candidates. Maximal degree in co-relation 10289. Up to 1245 conditions per place. [2024-06-27 19:49:26,184 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 231 selfloop transitions, 61 changer transitions 12/306 dead transitions. [2024-06-27 19:49:26,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 306 transitions, 3718 flow [2024-06-27 19:49:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:49:26,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:49:26,185 INFO L175 Difference]: Start difference. First operand has 333 places, 281 transitions, 2996 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:49:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 306 transitions, 3718 flow [2024-06-27 19:49:26,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 3456 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:49:26,685 INFO L231 Difference]: Finished difference. Result has 335 places, 276 transitions, 2831 flow [2024-06-27 19:49:26,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2831, PETRI_PLACES=335, PETRI_TRANSITIONS=276} [2024-06-27 19:49:26,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 19:49:26,686 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 276 transitions, 2831 flow [2024-06-27 19:49:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:26,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:26,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:26,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:49:26,686 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:26,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2008583260, now seen corresponding path program 16 times [2024-06-27 19:49:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89506830] [2024-06-27 19:49:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89506830] [2024-06-27 19:49:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89506830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:27,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960234036] [2024-06-27 19:49:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:27,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:27,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:27,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 276 transitions, 2831 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:27,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:27,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:27,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:28,499 INFO L124 PetriNetUnfolderBase]: 814/1522 cut-off events. [2024-06-27 19:49:28,499 INFO L125 PetriNetUnfolderBase]: For 316454/316454 co-relation queries the response was YES. [2024-06-27 19:49:28,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 1522 events. 814/1522 cut-off events. For 316454/316454 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8742 event pairs, 132 based on Foata normal form. 8/1528 useless extension candidates. Maximal degree in co-relation 11303. Up to 1149 conditions per place. [2024-06-27 19:49:28,515 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 80 changer transitions 7/305 dead transitions. [2024-06-27 19:49:28,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 305 transitions, 3787 flow [2024-06-27 19:49:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 19:49:28,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-27 19:49:28,516 INFO L175 Difference]: Start difference. First operand has 335 places, 276 transitions, 2831 flow. Second operand 12 states and 153 transitions. [2024-06-27 19:49:28,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 305 transitions, 3787 flow [2024-06-27 19:49:29,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 305 transitions, 3644 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 19:49:29,267 INFO L231 Difference]: Finished difference. Result has 335 places, 274 transitions, 2835 flow [2024-06-27 19:49:29,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2835, PETRI_PLACES=335, PETRI_TRANSITIONS=274} [2024-06-27 19:49:29,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 19:49:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 274 transitions, 2835 flow [2024-06-27 19:49:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:29,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:29,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:49:29,268 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:29,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -391847498, now seen corresponding path program 6 times [2024-06-27 19:49:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88916005] [2024-06-27 19:49:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:30,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88916005] [2024-06-27 19:49:30,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88916005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:30,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:30,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7052054] [2024-06-27 19:49:30,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:30,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:30,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 274 transitions, 2835 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:30,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:30,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:31,377 INFO L124 PetriNetUnfolderBase]: 844/1584 cut-off events. [2024-06-27 19:49:31,377 INFO L125 PetriNetUnfolderBase]: For 394204/394204 co-relation queries the response was YES. [2024-06-27 19:49:31,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13137 conditions, 1584 events. 844/1584 cut-off events. For 394204/394204 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9233 event pairs, 164 based on Foata normal form. 8/1590 useless extension candidates. Maximal degree in co-relation 12987. Up to 1289 conditions per place. [2024-06-27 19:49:31,395 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 46 changer transitions 8/303 dead transitions. [2024-06-27 19:49:31,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 303 transitions, 3821 flow [2024-06-27 19:49:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:49:31,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:49:31,396 INFO L175 Difference]: Start difference. First operand has 335 places, 274 transitions, 2835 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:49:31,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 303 transitions, 3821 flow [2024-06-27 19:49:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 303 transitions, 3683 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 19:49:32,313 INFO L231 Difference]: Finished difference. Result has 336 places, 271 transitions, 2762 flow [2024-06-27 19:49:32,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2762, PETRI_PLACES=336, PETRI_TRANSITIONS=271} [2024-06-27 19:49:32,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-27 19:49:32,313 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 271 transitions, 2762 flow [2024-06-27 19:49:32,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:32,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:32,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:32,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:49:32,314 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:32,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2008467940, now seen corresponding path program 17 times [2024-06-27 19:49:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:32,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877072600] [2024-06-27 19:49:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:32,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:33,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877072600] [2024-06-27 19:49:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877072600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:33,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:33,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:33,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839871022] [2024-06-27 19:49:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:33,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:33,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:33,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 271 transitions, 2762 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:33,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:33,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:33,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:34,479 INFO L124 PetriNetUnfolderBase]: 880/1664 cut-off events. [2024-06-27 19:49:34,479 INFO L125 PetriNetUnfolderBase]: For 499439/499439 co-relation queries the response was YES. [2024-06-27 19:49:34,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15110 conditions, 1664 events. 880/1664 cut-off events. For 499439/499439 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9834 event pairs, 176 based on Foata normal form. 8/1670 useless extension candidates. Maximal degree in co-relation 14961. Up to 1079 conditions per place. [2024-06-27 19:49:34,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 76 changer transitions 10/300 dead transitions. [2024-06-27 19:49:34,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 300 transitions, 3706 flow [2024-06-27 19:49:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 19:49:34,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 19:49:34,498 INFO L175 Difference]: Start difference. First operand has 336 places, 271 transitions, 2762 flow. Second operand 12 states and 152 transitions. [2024-06-27 19:49:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 300 transitions, 3706 flow [2024-06-27 19:49:35,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 300 transitions, 3614 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:35,734 INFO L231 Difference]: Finished difference. Result has 335 places, 268 transitions, 2809 flow [2024-06-27 19:49:35,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2809, PETRI_PLACES=335, PETRI_TRANSITIONS=268} [2024-06-27 19:49:35,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 19:49:35,735 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 268 transitions, 2809 flow [2024-06-27 19:49:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:35,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:35,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:49:35,735 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:35,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -398527192, now seen corresponding path program 18 times [2024-06-27 19:49:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877361804] [2024-06-27 19:49:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877361804] [2024-06-27 19:49:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877361804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775408659] [2024-06-27 19:49:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:37,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:37,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:37,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 268 transitions, 2809 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:37,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:37,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:37,830 INFO L124 PetriNetUnfolderBase]: 899/1705 cut-off events. [2024-06-27 19:49:37,830 INFO L125 PetriNetUnfolderBase]: For 555235/555235 co-relation queries the response was YES. [2024-06-27 19:49:37,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16435 conditions, 1705 events. 899/1705 cut-off events. For 555235/555235 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10203 event pairs, 203 based on Foata normal form. 8/1711 useless extension candidates. Maximal degree in co-relation 16287. Up to 1288 conditions per place. [2024-06-27 19:49:37,848 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 49 changer transitions 8/297 dead transitions. [2024-06-27 19:49:37,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 297 transitions, 3767 flow [2024-06-27 19:49:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 19:49:37,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 19:49:37,849 INFO L175 Difference]: Start difference. First operand has 335 places, 268 transitions, 2809 flow. Second operand 12 states and 148 transitions. [2024-06-27 19:49:37,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 297 transitions, 3767 flow [2024-06-27 19:49:38,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 297 transitions, 3627 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:38,901 INFO L231 Difference]: Finished difference. Result has 332 places, 265 transitions, 2747 flow [2024-06-27 19:49:38,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2747, PETRI_PLACES=332, PETRI_TRANSITIONS=265} [2024-06-27 19:49:38,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-27 19:49:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 265 transitions, 2747 flow [2024-06-27 19:49:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:38,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:38,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:49:38,902 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:38,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash -162158888, now seen corresponding path program 7 times [2024-06-27 19:49:38,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919903853] [2024-06-27 19:49:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:40,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:40,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:40,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919903853] [2024-06-27 19:49:40,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919903853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:40,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:40,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:40,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448818203] [2024-06-27 19:49:40,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:40,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:40,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:40,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 265 transitions, 2747 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:40,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:40,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:40,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:40,851 INFO L124 PetriNetUnfolderBase]: 883/1673 cut-off events. [2024-06-27 19:49:40,852 INFO L125 PetriNetUnfolderBase]: For 497815/497815 co-relation queries the response was YES. [2024-06-27 19:49:40,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16187 conditions, 1673 events. 883/1673 cut-off events. For 497815/497815 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9934 event pairs, 218 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 16041. Up to 1561 conditions per place. [2024-06-27 19:49:40,869 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 37 changer transitions 0/283 dead transitions. [2024-06-27 19:49:40,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 283 transitions, 3377 flow [2024-06-27 19:49:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:49:40,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:49:40,870 INFO L175 Difference]: Start difference. First operand has 332 places, 265 transitions, 2747 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:49:40,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 283 transitions, 3377 flow [2024-06-27 19:49:41,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 283 transitions, 3287 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:49:41,916 INFO L231 Difference]: Finished difference. Result has 330 places, 266 transitions, 2761 flow [2024-06-27 19:49:41,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2761, PETRI_PLACES=330, PETRI_TRANSITIONS=266} [2024-06-27 19:49:41,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 19:49:41,916 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 266 transitions, 2761 flow [2024-06-27 19:49:41,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:41,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:41,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:41,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:49:41,917 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:41,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash 212819256, now seen corresponding path program 19 times [2024-06-27 19:49:41,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:41,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5911113] [2024-06-27 19:49:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5911113] [2024-06-27 19:49:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5911113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:43,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:43,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032122921] [2024-06-27 19:49:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:43,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:43,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:43,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 266 transitions, 2761 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:43,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:43,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:43,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:44,057 INFO L124 PetriNetUnfolderBase]: 982/1850 cut-off events. [2024-06-27 19:49:44,057 INFO L125 PetriNetUnfolderBase]: For 537999/537999 co-relation queries the response was YES. [2024-06-27 19:49:44,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17022 conditions, 1850 events. 982/1850 cut-off events. For 537999/537999 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11230 event pairs, 279 based on Foata normal form. 10/1858 useless extension candidates. Maximal degree in co-relation 16877. Up to 1609 conditions per place. [2024-06-27 19:49:44,074 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 256 selfloop transitions, 56 changer transitions 14/328 dead transitions. [2024-06-27 19:49:44,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 328 transitions, 3878 flow [2024-06-27 19:49:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:49:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:49:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-27 19:49:44,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-27 19:49:44,074 INFO L175 Difference]: Start difference. First operand has 330 places, 266 transitions, 2761 flow. Second operand 13 states and 152 transitions. [2024-06-27 19:49:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 328 transitions, 3878 flow [2024-06-27 19:49:45,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 3782 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 19:49:45,333 INFO L231 Difference]: Finished difference. Result has 339 places, 292 transitions, 3159 flow [2024-06-27 19:49:45,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3159, PETRI_PLACES=339, PETRI_TRANSITIONS=292} [2024-06-27 19:49:45,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 19:49:45,333 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 292 transitions, 3159 flow [2024-06-27 19:49:45,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:45,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:45,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:45,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:49:45,333 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:45,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash 217467830, now seen corresponding path program 8 times [2024-06-27 19:49:45,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:45,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871155099] [2024-06-27 19:49:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:45,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871155099] [2024-06-27 19:49:46,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871155099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:46,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:46,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332081028] [2024-06-27 19:49:46,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:46,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:46,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 292 transitions, 3159 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:46,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:46,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:46,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:47,183 INFO L124 PetriNetUnfolderBase]: 963/1817 cut-off events. [2024-06-27 19:49:47,183 INFO L125 PetriNetUnfolderBase]: For 562220/562220 co-relation queries the response was YES. [2024-06-27 19:49:47,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16066 conditions, 1817 events. 963/1817 cut-off events. For 562220/562220 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11028 event pairs, 198 based on Foata normal form. 22/1837 useless extension candidates. Maximal degree in co-relation 15915. Up to 1368 conditions per place. [2024-06-27 19:49:47,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 84 changer transitions 14/316 dead transitions. [2024-06-27 19:49:47,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 316 transitions, 3903 flow [2024-06-27 19:49:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 19:49:47,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 19:49:47,204 INFO L175 Difference]: Start difference. First operand has 339 places, 292 transitions, 3159 flow. Second operand 11 states and 142 transitions. [2024-06-27 19:49:47,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 316 transitions, 3903 flow [2024-06-27 19:49:48,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 316 transitions, 3831 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 19:49:48,352 INFO L231 Difference]: Finished difference. Result has 338 places, 283 transitions, 3176 flow [2024-06-27 19:49:48,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3176, PETRI_PLACES=338, PETRI_TRANSITIONS=283} [2024-06-27 19:49:48,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-27 19:49:48,352 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 283 transitions, 3176 flow [2024-06-27 19:49:48,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:48,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:48,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:48,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:49:48,353 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:48,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash 217460886, now seen corresponding path program 20 times [2024-06-27 19:49:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:48,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707015065] [2024-06-27 19:49:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:48,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:49,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:49,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707015065] [2024-06-27 19:49:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707015065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:49,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982816781] [2024-06-27 19:49:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:49,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:49,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 283 transitions, 3176 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:49,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:49,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:49,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:50,509 INFO L124 PetriNetUnfolderBase]: 929/1759 cut-off events. [2024-06-27 19:49:50,510 INFO L125 PetriNetUnfolderBase]: For 521413/521413 co-relation queries the response was YES. [2024-06-27 19:49:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15868 conditions, 1759 events. 929/1759 cut-off events. For 521413/521413 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10658 event pairs, 210 based on Foata normal form. 16/1773 useless extension candidates. Maximal degree in co-relation 15719. Up to 1442 conditions per place. [2024-06-27 19:49:50,530 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 223 selfloop transitions, 62 changer transitions 20/307 dead transitions. [2024-06-27 19:49:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 307 transitions, 3878 flow [2024-06-27 19:49:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:49:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 19:49:50,531 INFO L175 Difference]: Start difference. First operand has 338 places, 283 transitions, 3176 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:49:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 307 transitions, 3878 flow [2024-06-27 19:49:51,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 307 transitions, 3674 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-27 19:49:51,575 INFO L231 Difference]: Finished difference. Result has 333 places, 273 transitions, 2982 flow [2024-06-27 19:49:51,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2982, PETRI_PLACES=333, PETRI_TRANSITIONS=273} [2024-06-27 19:49:51,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 19:49:51,576 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 273 transitions, 2982 flow [2024-06-27 19:49:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:51,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:51,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:51,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:49:51,576 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:51,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2013051910, now seen corresponding path program 21 times [2024-06-27 19:49:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:51,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992833051] [2024-06-27 19:49:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:52,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992833051] [2024-06-27 19:49:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992833051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:52,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:52,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880374062] [2024-06-27 19:49:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:53,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:53,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 273 transitions, 2982 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:53,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:53,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:53,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:53,622 INFO L124 PetriNetUnfolderBase]: 885/1679 cut-off events. [2024-06-27 19:49:53,622 INFO L125 PetriNetUnfolderBase]: For 472831/472831 co-relation queries the response was YES. [2024-06-27 19:49:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15351 conditions, 1679 events. 885/1679 cut-off events. For 472831/472831 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10027 event pairs, 192 based on Foata normal form. 8/1685 useless extension candidates. Maximal degree in co-relation 15203. Up to 1424 conditions per place. [2024-06-27 19:49:53,641 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 219 selfloop transitions, 57 changer transitions 17/295 dead transitions. [2024-06-27 19:49:53,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 295 transitions, 3642 flow [2024-06-27 19:49:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:49:53,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 19:49:53,642 INFO L175 Difference]: Start difference. First operand has 333 places, 273 transitions, 2982 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:49:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 295 transitions, 3642 flow [2024-06-27 19:49:54,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 295 transitions, 3508 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:49:54,744 INFO L231 Difference]: Finished difference. Result has 327 places, 265 transitions, 2882 flow [2024-06-27 19:49:54,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2882, PETRI_PLACES=327, PETRI_TRANSITIONS=265} [2024-06-27 19:49:54,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-27 19:49:54,745 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 265 transitions, 2882 flow [2024-06-27 19:49:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:49:54,745 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:54,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1936719722, now seen corresponding path program 9 times [2024-06-27 19:49:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548128510] [2024-06-27 19:49:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548128510] [2024-06-27 19:49:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548128510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:55,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:55,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:55,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401028648] [2024-06-27 19:49:55,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:55,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:55,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:55,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:55,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:56,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:56,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 265 transitions, 2882 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:56,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:56,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:56,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:56,582 INFO L124 PetriNetUnfolderBase]: 838/1590 cut-off events. [2024-06-27 19:49:56,582 INFO L125 PetriNetUnfolderBase]: For 436034/436034 co-relation queries the response was YES. [2024-06-27 19:49:56,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12360 conditions, 1590 events. 838/1590 cut-off events. For 436034/436034 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9387 event pairs, 179 based on Foata normal form. 28/1616 useless extension candidates. Maximal degree in co-relation 12215. Up to 1289 conditions per place. [2024-06-27 19:49:56,599 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 35 changer transitions 29/288 dead transitions. [2024-06-27 19:49:56,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 288 transitions, 3566 flow [2024-06-27 19:49:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:49:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:49:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:49:56,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 19:49:56,599 INFO L175 Difference]: Start difference. First operand has 327 places, 265 transitions, 2882 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:49:56,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 288 transitions, 3566 flow [2024-06-27 19:49:57,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 288 transitions, 3396 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 19:49:57,202 INFO L231 Difference]: Finished difference. Result has 318 places, 245 transitions, 2544 flow [2024-06-27 19:49:57,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2544, PETRI_PLACES=318, PETRI_TRANSITIONS=245} [2024-06-27 19:49:57,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-27 19:49:57,202 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 245 transitions, 2544 flow [2024-06-27 19:49:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:57,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:57,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:49:57,202 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:57,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 219565308, now seen corresponding path program 10 times [2024-06-27 19:49:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291031988] [2024-06-27 19:49:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:49:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:49:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:49:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291031988] [2024-06-27 19:49:58,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291031988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:49:58,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:49:58,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:49:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876107375] [2024-06-27 19:49:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:49:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:49:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:49:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:49:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:49:58,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:49:58,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 245 transitions, 2544 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:58,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:49:58,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:49:58,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:49:58,999 INFO L124 PetriNetUnfolderBase]: 774/1474 cut-off events. [2024-06-27 19:49:58,999 INFO L125 PetriNetUnfolderBase]: For 356527/356527 co-relation queries the response was YES. [2024-06-27 19:49:59,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11414 conditions, 1474 events. 774/1474 cut-off events. For 356527/356527 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8557 event pairs, 161 based on Foata normal form. 18/1490 useless extension candidates. Maximal degree in co-relation 11273. Up to 1153 conditions per place. [2024-06-27 19:49:59,013 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 46 changer transitions 25/271 dead transitions. [2024-06-27 19:49:59,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 271 transitions, 3204 flow [2024-06-27 19:49:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:49:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:49:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 19:49:59,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 19:49:59,014 INFO L175 Difference]: Start difference. First operand has 318 places, 245 transitions, 2544 flow. Second operand 12 states and 150 transitions. [2024-06-27 19:49:59,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 271 transitions, 3204 flow [2024-06-27 19:49:59,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 271 transitions, 3108 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-06-27 19:49:59,583 INFO L231 Difference]: Finished difference. Result has 307 places, 231 transitions, 2385 flow [2024-06-27 19:49:59,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2385, PETRI_PLACES=307, PETRI_TRANSITIONS=231} [2024-06-27 19:49:59,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-27 19:49:59,583 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 231 transitions, 2385 flow [2024-06-27 19:49:59,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:49:59,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:49:59,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:49:59,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:49:59,584 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:49:59,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:49:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2109010282, now seen corresponding path program 11 times [2024-06-27 19:49:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:49:59,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973004787] [2024-06-27 19:49:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:49:59,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:49:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:00,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:00,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973004787] [2024-06-27 19:50:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973004787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923276575] [2024-06-27 19:50:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:00,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:00,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:00,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:00,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 231 transitions, 2385 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:00,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:00,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:00,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:01,363 INFO L124 PetriNetUnfolderBase]: 706/1350 cut-off events. [2024-06-27 19:50:01,363 INFO L125 PetriNetUnfolderBase]: For 249227/249227 co-relation queries the response was YES. [2024-06-27 19:50:01,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10649 conditions, 1350 events. 706/1350 cut-off events. For 249227/249227 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7691 event pairs, 155 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 10513. Up to 1175 conditions per place. [2024-06-27 19:50:01,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 44 changer transitions 0/250 dead transitions. [2024-06-27 19:50:01,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 250 transitions, 2957 flow [2024-06-27 19:50:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:50:01,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:50:01,376 INFO L175 Difference]: Start difference. First operand has 307 places, 231 transitions, 2385 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:50:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 250 transitions, 2957 flow [2024-06-27 19:50:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 250 transitions, 2849 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:50:02,175 INFO L231 Difference]: Finished difference. Result has 300 places, 232 transitions, 2398 flow [2024-06-27 19:50:02,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2398, PETRI_PLACES=300, PETRI_TRANSITIONS=232} [2024-06-27 19:50:02,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-27 19:50:02,176 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 232 transitions, 2398 flow [2024-06-27 19:50:02,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:02,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:02,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:50:02,176 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:02,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2115681606, now seen corresponding path program 22 times [2024-06-27 19:50:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761680498] [2024-06-27 19:50:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:03,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:03,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761680498] [2024-06-27 19:50:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761680498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:03,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739197847] [2024-06-27 19:50:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:03,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:03,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:03,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 232 transitions, 2398 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:03,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:03,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:03,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:04,158 INFO L124 PetriNetUnfolderBase]: 733/1411 cut-off events. [2024-06-27 19:50:04,158 INFO L125 PetriNetUnfolderBase]: For 296813/296813 co-relation queries the response was YES. [2024-06-27 19:50:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11341 conditions, 1411 events. 733/1411 cut-off events. For 296813/296813 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8149 event pairs, 162 based on Foata normal form. 8/1417 useless extension candidates. Maximal degree in co-relation 11207. Up to 1066 conditions per place. [2024-06-27 19:50:04,173 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 44 changer transitions 12/261 dead transitions. [2024-06-27 19:50:04,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 261 transitions, 3236 flow [2024-06-27 19:50:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-27 19:50:04,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 19:50:04,173 INFO L175 Difference]: Start difference. First operand has 300 places, 232 transitions, 2398 flow. Second operand 12 states and 150 transitions. [2024-06-27 19:50:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 261 transitions, 3236 flow [2024-06-27 19:50:05,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 3127 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 19:50:05,095 INFO L231 Difference]: Finished difference. Result has 303 places, 225 transitions, 2309 flow [2024-06-27 19:50:05,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2309, PETRI_PLACES=303, PETRI_TRANSITIONS=225} [2024-06-27 19:50:05,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-27 19:50:05,095 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 225 transitions, 2309 flow [2024-06-27 19:50:05,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:05,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:05,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:05,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:50:05,096 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:05,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2109001912, now seen corresponding path program 12 times [2024-06-27 19:50:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:05,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348483809] [2024-06-27 19:50:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:06,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348483809] [2024-06-27 19:50:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348483809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:06,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:06,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:06,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833293682] [2024-06-27 19:50:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:06,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:06,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:06,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 225 transitions, 2309 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:06,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:06,839 INFO L124 PetriNetUnfolderBase]: 713/1367 cut-off events. [2024-06-27 19:50:06,839 INFO L125 PetriNetUnfolderBase]: For 274607/274607 co-relation queries the response was YES. [2024-06-27 19:50:06,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 1367 events. 713/1367 cut-off events. For 274607/274607 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7824 event pairs, 180 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 11071. Up to 1182 conditions per place. [2024-06-27 19:50:06,852 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 42 changer transitions 0/244 dead transitions. [2024-06-27 19:50:06,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 244 transitions, 2869 flow [2024-06-27 19:50:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:50:06,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 19:50:06,853 INFO L175 Difference]: Start difference. First operand has 303 places, 225 transitions, 2309 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:50:06,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 244 transitions, 2869 flow [2024-06-27 19:50:07,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 244 transitions, 2781 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:50:07,610 INFO L231 Difference]: Finished difference. Result has 298 places, 226 transitions, 2339 flow [2024-06-27 19:50:07,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2339, PETRI_PLACES=298, PETRI_TRANSITIONS=226} [2024-06-27 19:50:07,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-27 19:50:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 226 transitions, 2339 flow [2024-06-27 19:50:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:07,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:07,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:50:07,610 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 389950776, now seen corresponding path program 23 times [2024-06-27 19:50:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549243860] [2024-06-27 19:50:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549243860] [2024-06-27 19:50:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549243860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:08,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:08,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:08,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479525480] [2024-06-27 19:50:08,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:08,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:08,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 226 transitions, 2339 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:08,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:08,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:09,469 INFO L124 PetriNetUnfolderBase]: 693/1331 cut-off events. [2024-06-27 19:50:09,469 INFO L125 PetriNetUnfolderBase]: For 253960/253960 co-relation queries the response was YES. [2024-06-27 19:50:09,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9428 conditions, 1331 events. 693/1331 cut-off events. For 253960/253960 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7608 event pairs, 148 based on Foata normal form. 16/1345 useless extension candidates. Maximal degree in co-relation 9295. Up to 1074 conditions per place. [2024-06-27 19:50:09,482 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 35 changer transitions 21/250 dead transitions. [2024-06-27 19:50:09,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 250 transitions, 2927 flow [2024-06-27 19:50:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 19:50:09,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:50:09,483 INFO L175 Difference]: Start difference. First operand has 298 places, 226 transitions, 2339 flow. Second operand 12 states and 144 transitions. [2024-06-27 19:50:09,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 250 transitions, 2927 flow [2024-06-27 19:50:10,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 250 transitions, 2819 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:50:10,019 INFO L231 Difference]: Finished difference. Result has 301 places, 215 transitions, 2185 flow [2024-06-27 19:50:10,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2185, PETRI_PLACES=301, PETRI_TRANSITIONS=215} [2024-06-27 19:50:10,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-27 19:50:10,019 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 215 transitions, 2185 flow [2024-06-27 19:50:10,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:10,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:10,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:10,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:50:10,020 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:10,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2121775544, now seen corresponding path program 13 times [2024-06-27 19:50:10,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826797725] [2024-06-27 19:50:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826797725] [2024-06-27 19:50:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826797725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:11,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204138046] [2024-06-27 19:50:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:11,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 215 transitions, 2185 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:11,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:11,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:11,834 INFO L124 PetriNetUnfolderBase]: 645/1247 cut-off events. [2024-06-27 19:50:11,834 INFO L125 PetriNetUnfolderBase]: For 217851/217851 co-relation queries the response was YES. [2024-06-27 19:50:11,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9021 conditions, 1247 events. 645/1247 cut-off events. For 217851/217851 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6989 event pairs, 129 based on Foata normal form. 8/1253 useless extension candidates. Maximal degree in co-relation 8899. Up to 1119 conditions per place. [2024-06-27 19:50:11,846 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 31 changer transitions 13/235 dead transitions. [2024-06-27 19:50:11,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 235 transitions, 2737 flow [2024-06-27 19:50:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:50:11,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 19:50:11,847 INFO L175 Difference]: Start difference. First operand has 301 places, 215 transitions, 2185 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:50:11,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 235 transitions, 2737 flow [2024-06-27 19:50:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 235 transitions, 2651 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 19:50:12,558 INFO L231 Difference]: Finished difference. Result has 289 places, 211 transitions, 2134 flow [2024-06-27 19:50:12,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2134, PETRI_PLACES=289, PETRI_TRANSITIONS=211} [2024-06-27 19:50:12,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-27 19:50:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 211 transitions, 2134 flow [2024-06-27 19:50:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:12,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:12,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:50:12,559 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:12,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 18932842, now seen corresponding path program 14 times [2024-06-27 19:50:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827052523] [2024-06-27 19:50:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827052523] [2024-06-27 19:50:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827052523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:14,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613661433] [2024-06-27 19:50:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:14,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:14,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 211 transitions, 2134 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:14,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:14,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:14,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:14,744 INFO L124 PetriNetUnfolderBase]: 641/1243 cut-off events. [2024-06-27 19:50:14,744 INFO L125 PetriNetUnfolderBase]: For 225541/225541 co-relation queries the response was YES. [2024-06-27 19:50:14,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8879 conditions, 1243 events. 641/1243 cut-off events. For 225541/225541 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7018 event pairs, 145 based on Foata normal form. 12/1253 useless extension candidates. Maximal degree in co-relation 8761. Up to 881 conditions per place. [2024-06-27 19:50:14,756 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 151 selfloop transitions, 72 changer transitions 7/232 dead transitions. [2024-06-27 19:50:14,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 232 transitions, 2702 flow [2024-06-27 19:50:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 19:50:14,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 19:50:14,757 INFO L175 Difference]: Start difference. First operand has 289 places, 211 transitions, 2134 flow. Second operand 11 states and 137 transitions. [2024-06-27 19:50:14,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 232 transitions, 2702 flow [2024-06-27 19:50:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 232 transitions, 2634 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:15,414 INFO L231 Difference]: Finished difference. Result has 285 places, 209 transitions, 2220 flow [2024-06-27 19:50:15,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=285, PETRI_TRANSITIONS=209} [2024-06-27 19:50:15,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-27 19:50:15,414 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 209 transitions, 2220 flow [2024-06-27 19:50:15,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:15,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:15,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:15,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:50:15,415 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:15,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1917611284, now seen corresponding path program 24 times [2024-06-27 19:50:15,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:15,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149727530] [2024-06-27 19:50:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149727530] [2024-06-27 19:50:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149727530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141007529] [2024-06-27 19:50:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:18,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:18,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 209 transitions, 2220 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:18,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:18,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:18,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:18,983 INFO L124 PetriNetUnfolderBase]: 633/1231 cut-off events. [2024-06-27 19:50:18,984 INFO L125 PetriNetUnfolderBase]: For 207669/207669 co-relation queries the response was YES. [2024-06-27 19:50:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8871 conditions, 1231 events. 633/1231 cut-off events. For 207669/207669 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6962 event pairs, 147 based on Foata normal form. 10/1239 useless extension candidates. Maximal degree in co-relation 8755. Up to 1020 conditions per place. [2024-06-27 19:50:18,995 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 45 changer transitions 11/231 dead transitions. [2024-06-27 19:50:18,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 231 transitions, 2764 flow [2024-06-27 19:50:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 19:50:18,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 19:50:18,995 INFO L175 Difference]: Start difference. First operand has 285 places, 209 transitions, 2220 flow. Second operand 12 states and 141 transitions. [2024-06-27 19:50:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 231 transitions, 2764 flow [2024-06-27 19:50:19,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 231 transitions, 2565 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 19:50:19,583 INFO L231 Difference]: Finished difference. Result has 286 places, 206 transitions, 2086 flow [2024-06-27 19:50:19,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2086, PETRI_PLACES=286, PETRI_TRANSITIONS=206} [2024-06-27 19:50:19,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-27 19:50:19,584 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 206 transitions, 2086 flow [2024-06-27 19:50:19,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:19,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:19,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:19,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 19:50:19,584 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:19,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1917788914, now seen corresponding path program 25 times [2024-06-27 19:50:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:19,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248153742] [2024-06-27 19:50:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:19,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:20,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248153742] [2024-06-27 19:50:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248153742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:20,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:20,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147464394] [2024-06-27 19:50:20,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:20,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:21,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 206 transitions, 2086 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:21,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:21,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:21,680 INFO L124 PetriNetUnfolderBase]: 655/1281 cut-off events. [2024-06-27 19:50:21,680 INFO L125 PetriNetUnfolderBase]: For 257363/257363 co-relation queries the response was YES. [2024-06-27 19:50:21,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10068 conditions, 1281 events. 655/1281 cut-off events. For 257363/257363 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7358 event pairs, 153 based on Foata normal form. 8/1287 useless extension candidates. Maximal degree in co-relation 9952. Up to 956 conditions per place. [2024-06-27 19:50:21,693 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 172 selfloop transitions, 51 changer transitions 8/233 dead transitions. [2024-06-27 19:50:21,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 233 transitions, 2878 flow [2024-06-27 19:50:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 19:50:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-27 19:50:21,693 INFO L175 Difference]: Start difference. First operand has 286 places, 206 transitions, 2086 flow. Second operand 12 states and 146 transitions. [2024-06-27 19:50:21,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 233 transitions, 2878 flow [2024-06-27 19:50:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 233 transitions, 2780 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:50:22,321 INFO L231 Difference]: Finished difference. Result has 284 places, 203 transitions, 2072 flow [2024-06-27 19:50:22,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2072, PETRI_PLACES=284, PETRI_TRANSITIONS=203} [2024-06-27 19:50:22,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-27 19:50:22,321 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 203 transitions, 2072 flow [2024-06-27 19:50:22,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:22,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:22,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:22,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 19:50:22,322 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:22,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -157804042, now seen corresponding path program 15 times [2024-06-27 19:50:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769057761] [2024-06-27 19:50:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769057761] [2024-06-27 19:50:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769057761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:23,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:23,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:23,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494489057] [2024-06-27 19:50:23,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:23,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:23,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:23,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:23,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:23,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 203 transitions, 2072 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:23,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:23,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:23,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:24,475 INFO L124 PetriNetUnfolderBase]: 656/1284 cut-off events. [2024-06-27 19:50:24,475 INFO L125 PetriNetUnfolderBase]: For 270324/270324 co-relation queries the response was YES. [2024-06-27 19:50:24,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1284 events. 656/1284 cut-off events. For 270324/270324 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7360 event pairs, 157 based on Foata normal form. 12/1294 useless extension candidates. Maximal degree in co-relation 9978. Up to 933 conditions per place. [2024-06-27 19:50:24,487 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 140 selfloop transitions, 72 changer transitions 10/224 dead transitions. [2024-06-27 19:50:24,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 224 transitions, 2624 flow [2024-06-27 19:50:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:50:24,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 19:50:24,487 INFO L175 Difference]: Start difference. First operand has 284 places, 203 transitions, 2072 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:50:24,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 224 transitions, 2624 flow [2024-06-27 19:50:25,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 224 transitions, 2520 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:50:25,137 INFO L231 Difference]: Finished difference. Result has 281 places, 198 transitions, 2102 flow [2024-06-27 19:50:25,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2102, PETRI_PLACES=281, PETRI_TRANSITIONS=198} [2024-06-27 19:50:25,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 19:50:25,137 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 198 transitions, 2102 flow [2024-06-27 19:50:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:25,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:25,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 19:50:25,138 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:25,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1911117590, now seen corresponding path program 16 times [2024-06-27 19:50:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688751543] [2024-06-27 19:50:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:26,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:26,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688751543] [2024-06-27 19:50:26,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688751543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:26,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:26,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:50:26,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508062009] [2024-06-27 19:50:26,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:26,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:50:26,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:50:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:50:26,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:26,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 198 transitions, 2102 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:26,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:26,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:26,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:26,724 INFO L124 PetriNetUnfolderBase]: 621/1219 cut-off events. [2024-06-27 19:50:26,724 INFO L125 PetriNetUnfolderBase]: For 212133/212133 co-relation queries the response was YES. [2024-06-27 19:50:26,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9664 conditions, 1219 events. 621/1219 cut-off events. For 212133/212133 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6904 event pairs, 168 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 9550. Up to 961 conditions per place. [2024-06-27 19:50:26,736 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 60 changer transitions 0/215 dead transitions. [2024-06-27 19:50:26,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 215 transitions, 2602 flow [2024-06-27 19:50:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:50:26,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:50:26,736 INFO L175 Difference]: Start difference. First operand has 281 places, 198 transitions, 2102 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:50:26,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 215 transitions, 2602 flow [2024-06-27 19:50:27,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 215 transitions, 2430 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 19:50:27,343 INFO L231 Difference]: Finished difference. Result has 279 places, 199 transitions, 2086 flow [2024-06-27 19:50:27,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=279, PETRI_TRANSITIONS=199} [2024-06-27 19:50:27,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 19:50:27,344 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 199 transitions, 2086 flow [2024-06-27 19:50:27,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:27,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:27,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:27,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 19:50:27,344 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2084022694, now seen corresponding path program 26 times [2024-06-27 19:50:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:27,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799545925] [2024-06-27 19:50:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799545925] [2024-06-27 19:50:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799545925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237302242] [2024-06-27 19:50:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:28,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:28,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 199 transitions, 2086 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:28,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:28,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:28,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:29,542 INFO L124 PetriNetUnfolderBase]: 666/1314 cut-off events. [2024-06-27 19:50:29,542 INFO L125 PetriNetUnfolderBase]: For 275687/275687 co-relation queries the response was YES. [2024-06-27 19:50:29,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10785 conditions, 1314 events. 666/1314 cut-off events. For 275687/275687 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7650 event pairs, 167 based on Foata normal form. 8/1320 useless extension candidates. Maximal degree in co-relation 10672. Up to 1004 conditions per place. [2024-06-27 19:50:29,551 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 159 selfloop transitions, 57 changer transitions 8/226 dead transitions. [2024-06-27 19:50:29,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 226 transitions, 2834 flow [2024-06-27 19:50:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 19:50:29,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-27 19:50:29,552 INFO L175 Difference]: Start difference. First operand has 279 places, 199 transitions, 2086 flow. Second operand 12 states and 145 transitions. [2024-06-27 19:50:29,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 226 transitions, 2834 flow [2024-06-27 19:50:30,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 226 transitions, 2688 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:50:30,086 INFO L231 Difference]: Finished difference. Result has 283 places, 197 transitions, 2040 flow [2024-06-27 19:50:30,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2040, PETRI_PLACES=283, PETRI_TRANSITIONS=197} [2024-06-27 19:50:30,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 19:50:30,086 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 197 transitions, 2040 flow [2024-06-27 19:50:30,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:30,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:30,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 19:50:30,086 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:30,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1568876166, now seen corresponding path program 27 times [2024-06-27 19:50:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899849920] [2024-06-27 19:50:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:31,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899849920] [2024-06-27 19:50:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899849920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:31,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132396289] [2024-06-27 19:50:31,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:31,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:31,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:32,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:32,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 197 transitions, 2040 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:32,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:32,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:32,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:32,855 INFO L124 PetriNetUnfolderBase]: 649/1283 cut-off events. [2024-06-27 19:50:32,855 INFO L125 PetriNetUnfolderBase]: For 272417/272417 co-relation queries the response was YES. [2024-06-27 19:50:32,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 1283 events. 649/1283 cut-off events. For 272417/272417 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7424 event pairs, 181 based on Foata normal form. 10/1291 useless extension candidates. Maximal degree in co-relation 10182. Up to 1072 conditions per place. [2024-06-27 19:50:32,868 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 43 changer transitions 11/218 dead transitions. [2024-06-27 19:50:32,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 218 transitions, 2554 flow [2024-06-27 19:50:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:50:32,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 19:50:32,869 INFO L175 Difference]: Start difference. First operand has 283 places, 197 transitions, 2040 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:50:32,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 218 transitions, 2554 flow [2024-06-27 19:50:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 218 transitions, 2429 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:50:33,524 INFO L231 Difference]: Finished difference. Result has 281 places, 194 transitions, 1974 flow [2024-06-27 19:50:33,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1974, PETRI_PLACES=281, PETRI_TRANSITIONS=194} [2024-06-27 19:50:33,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 19:50:33,524 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 194 transitions, 1974 flow [2024-06-27 19:50:33,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:33,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:33,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 19:50:33,524 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:33,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1911109220, now seen corresponding path program 17 times [2024-06-27 19:50:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4260002] [2024-06-27 19:50:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4260002] [2024-06-27 19:50:34,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4260002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:34,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:34,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023254889] [2024-06-27 19:50:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:34,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:34,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 194 transitions, 1974 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:34,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:34,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:34,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:35,071 INFO L124 PetriNetUnfolderBase]: 627/1241 cut-off events. [2024-06-27 19:50:35,071 INFO L125 PetriNetUnfolderBase]: For 238087/238087 co-relation queries the response was YES. [2024-06-27 19:50:35,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10114 conditions, 1241 events. 627/1241 cut-off events. For 238087/238087 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7106 event pairs, 177 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 10000. Up to 968 conditions per place. [2024-06-27 19:50:35,083 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-27 19:50:35,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 211 transitions, 2466 flow [2024-06-27 19:50:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 19:50:35,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 19:50:35,084 INFO L175 Difference]: Start difference. First operand has 281 places, 194 transitions, 1974 flow. Second operand 11 states and 129 transitions. [2024-06-27 19:50:35,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 211 transitions, 2466 flow [2024-06-27 19:50:35,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 211 transitions, 2376 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:50:35,714 INFO L231 Difference]: Finished difference. Result has 278 places, 195 transitions, 2040 flow [2024-06-27 19:50:35,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2040, PETRI_PLACES=278, PETRI_TRANSITIONS=195} [2024-06-27 19:50:35,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-27 19:50:35,715 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 195 transitions, 2040 flow [2024-06-27 19:50:35,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:35,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:35,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 19:50:35,715 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:35,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:35,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2083845064, now seen corresponding path program 28 times [2024-06-27 19:50:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445884483] [2024-06-27 19:50:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:38,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445884483] [2024-06-27 19:50:38,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445884483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:38,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:38,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:38,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613969237] [2024-06-27 19:50:38,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:38,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:38,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:38,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 195 transitions, 2040 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:38,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:38,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:38,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:39,196 INFO L124 PetriNetUnfolderBase]: 629/1251 cut-off events. [2024-06-27 19:50:39,197 INFO L125 PetriNetUnfolderBase]: For 249811/249811 co-relation queries the response was YES. [2024-06-27 19:50:39,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9767 conditions, 1251 events. 629/1251 cut-off events. For 249811/249811 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7210 event pairs, 171 based on Foata normal form. 10/1259 useless extension candidates. Maximal degree in co-relation 9654. Up to 1040 conditions per place. [2024-06-27 19:50:39,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 47 changer transitions 11/216 dead transitions. [2024-06-27 19:50:39,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 216 transitions, 2550 flow [2024-06-27 19:50:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:50:39,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 19:50:39,209 INFO L175 Difference]: Start difference. First operand has 278 places, 195 transitions, 2040 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:50:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 216 transitions, 2550 flow [2024-06-27 19:50:39,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 216 transitions, 2404 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:50:39,789 INFO L231 Difference]: Finished difference. Result has 281 places, 192 transitions, 1962 flow [2024-06-27 19:50:39,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1962, PETRI_PLACES=281, PETRI_TRANSITIONS=192} [2024-06-27 19:50:39,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 19:50:39,790 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 192 transitions, 1962 flow [2024-06-27 19:50:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:39,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:39,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:39,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 19:50:39,790 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:39,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1391739996, now seen corresponding path program 29 times [2024-06-27 19:50:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248910958] [2024-06-27 19:50:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248910958] [2024-06-27 19:50:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248910958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:41,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:41,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:41,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116441659] [2024-06-27 19:50:41,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:41,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:41,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 192 transitions, 1962 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:41,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:41,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:41,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:41,815 INFO L124 PetriNetUnfolderBase]: 615/1229 cut-off events. [2024-06-27 19:50:41,815 INFO L125 PetriNetUnfolderBase]: For 245681/245681 co-relation queries the response was YES. [2024-06-27 19:50:41,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9612 conditions, 1229 events. 615/1229 cut-off events. For 245681/245681 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7052 event pairs, 157 based on Foata normal form. 8/1235 useless extension candidates. Maximal degree in co-relation 9498. Up to 958 conditions per place. [2024-06-27 19:50:41,827 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 60 changer transitions 11/212 dead transitions. [2024-06-27 19:50:41,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 212 transitions, 2450 flow [2024-06-27 19:50:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:50:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:50:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:50:41,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 19:50:41,828 INFO L175 Difference]: Start difference. First operand has 281 places, 192 transitions, 1962 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:50:41,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 212 transitions, 2450 flow [2024-06-27 19:50:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 2352 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:50:42,533 INFO L231 Difference]: Finished difference. Result has 279 places, 189 transitions, 1967 flow [2024-06-27 19:50:42,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1967, PETRI_PLACES=279, PETRI_TRANSITIONS=189} [2024-06-27 19:50:42,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 19:50:42,534 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 189 transitions, 1967 flow [2024-06-27 19:50:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:42,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 19:50:42,534 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:42,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash -702144218, now seen corresponding path program 18 times [2024-06-27 19:50:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156897650] [2024-06-27 19:50:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156897650] [2024-06-27 19:50:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156897650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:43,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:43,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:43,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401967309] [2024-06-27 19:50:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:43,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:43,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:43,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 189 transitions, 1967 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:43,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:43,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:43,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:44,219 INFO L124 PetriNetUnfolderBase]: 600/1196 cut-off events. [2024-06-27 19:50:44,219 INFO L125 PetriNetUnfolderBase]: For 215659/215659 co-relation queries the response was YES. [2024-06-27 19:50:44,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9553 conditions, 1196 events. 600/1196 cut-off events. For 215659/215659 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6779 event pairs, 187 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 9440. Up to 1136 conditions per place. [2024-06-27 19:50:44,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 25 changer transitions 0/204 dead transitions. [2024-06-27 19:50:44,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 204 transitions, 2441 flow [2024-06-27 19:50:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:50:44,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 19:50:44,231 INFO L175 Difference]: Start difference. First operand has 279 places, 189 transitions, 1967 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:50:44,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 204 transitions, 2441 flow [2024-06-27 19:50:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 204 transitions, 2314 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:44,846 INFO L231 Difference]: Finished difference. Result has 275 places, 190 transitions, 1931 flow [2024-06-27 19:50:44,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1931, PETRI_PLACES=275, PETRI_TRANSITIONS=190} [2024-06-27 19:50:44,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 19:50:44,846 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 190 transitions, 1931 flow [2024-06-27 19:50:44,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:44,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:44,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 19:50:44,847 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:44,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -348825306, now seen corresponding path program 19 times [2024-06-27 19:50:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318116910] [2024-06-27 19:50:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318116910] [2024-06-27 19:50:46,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318116910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:46,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200257613] [2024-06-27 19:50:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:47,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:47,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 190 transitions, 1931 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:47,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:47,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:47,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:47,785 INFO L124 PetriNetUnfolderBase]: 620/1240 cut-off events. [2024-06-27 19:50:47,785 INFO L125 PetriNetUnfolderBase]: For 253189/253189 co-relation queries the response was YES. [2024-06-27 19:50:47,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 1240 events. 620/1240 cut-off events. For 253189/253189 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7115 event pairs, 181 based on Foata normal form. 12/1250 useless extension candidates. Maximal degree in co-relation 9498. Up to 1106 conditions per place. [2024-06-27 19:50:47,794 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 22 changer transitions 16/214 dead transitions. [2024-06-27 19:50:47,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 214 transitions, 2479 flow [2024-06-27 19:50:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:50:47,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:50:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 19:50:47,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-06-27 19:50:47,795 INFO L175 Difference]: Start difference. First operand has 275 places, 190 transitions, 1931 flow. Second operand 13 states and 146 transitions. [2024-06-27 19:50:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 214 transitions, 2479 flow [2024-06-27 19:50:48,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 214 transitions, 2345 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:50:48,309 INFO L231 Difference]: Finished difference. Result has 279 places, 185 transitions, 1791 flow [2024-06-27 19:50:48,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1791, PETRI_PLACES=279, PETRI_TRANSITIONS=185} [2024-06-27 19:50:48,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 19:50:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 185 transitions, 1791 flow [2024-06-27 19:50:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:48,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 19:50:48,310 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:48,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 461268228, now seen corresponding path program 20 times [2024-06-27 19:50:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757336260] [2024-06-27 19:50:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:49,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757336260] [2024-06-27 19:50:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757336260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:49,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050347342] [2024-06-27 19:50:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:49,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:49,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:49,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:49,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:49,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:49,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 185 transitions, 1791 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:49,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:49,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:49,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:49,911 INFO L124 PetriNetUnfolderBase]: 596/1200 cut-off events. [2024-06-27 19:50:49,911 INFO L125 PetriNetUnfolderBase]: For 238311/238311 co-relation queries the response was YES. [2024-06-27 19:50:49,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9345 conditions, 1200 events. 596/1200 cut-off events. For 238311/238311 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6860 event pairs, 181 based on Foata normal form. 8/1206 useless extension candidates. Maximal degree in co-relation 9232. Up to 1125 conditions per place. [2024-06-27 19:50:49,920 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 11 changer transitions 15/202 dead transitions. [2024-06-27 19:50:49,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 202 transitions, 2271 flow [2024-06-27 19:50:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:50:49,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:50:49,921 INFO L175 Difference]: Start difference. First operand has 279 places, 185 transitions, 1791 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:50:49,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 202 transitions, 2271 flow [2024-06-27 19:50:50,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 202 transitions, 2219 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:50:50,487 INFO L231 Difference]: Finished difference. Result has 273 places, 181 transitions, 1745 flow [2024-06-27 19:50:50,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1745, PETRI_PLACES=273, PETRI_TRANSITIONS=181} [2024-06-27 19:50:50,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 19:50:50,487 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 181 transitions, 1745 flow [2024-06-27 19:50:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:50,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:50,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 19:50:50,488 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:50,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash 118681338, now seen corresponding path program 21 times [2024-06-27 19:50:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310312420] [2024-06-27 19:50:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310312420] [2024-06-27 19:50:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310312420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:51,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985352330] [2024-06-27 19:50:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:51,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:51,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:51,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 181 transitions, 1745 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:51,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:51,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:51,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:51,938 INFO L124 PetriNetUnfolderBase]: 611/1233 cut-off events. [2024-06-27 19:50:51,938 INFO L125 PetriNetUnfolderBase]: For 269019/269019 co-relation queries the response was YES. [2024-06-27 19:50:51,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 1233 events. 611/1233 cut-off events. For 269019/269019 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7102 event pairs, 196 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 10146. Up to 1049 conditions per place. [2024-06-27 19:50:51,950 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 21 changer transitions 8/203 dead transitions. [2024-06-27 19:50:51,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 203 transitions, 2451 flow [2024-06-27 19:50:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:50:51,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:50:51,950 INFO L175 Difference]: Start difference. First operand has 273 places, 181 transitions, 1745 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:50:51,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 203 transitions, 2451 flow [2024-06-27 19:50:52,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 203 transitions, 2413 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:52,599 INFO L231 Difference]: Finished difference. Result has 267 places, 178 transitions, 1735 flow [2024-06-27 19:50:52,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1735, PETRI_PLACES=267, PETRI_TRANSITIONS=178} [2024-06-27 19:50:52,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 19:50:52,599 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 178 transitions, 1735 flow [2024-06-27 19:50:52,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:52,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:52,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:52,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 19:50:52,600 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:52,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 118969638, now seen corresponding path program 22 times [2024-06-27 19:50:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:52,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766600773] [2024-06-27 19:50:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766600773] [2024-06-27 19:50:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766600773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068972428] [2024-06-27 19:50:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:53,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:53,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 178 transitions, 1735 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:53,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:53,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:53,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:54,107 INFO L124 PetriNetUnfolderBase]: 603/1221 cut-off events. [2024-06-27 19:50:54,107 INFO L125 PetriNetUnfolderBase]: For 251679/251679 co-relation queries the response was YES. [2024-06-27 19:50:54,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 1221 events. 603/1221 cut-off events. For 251679/251679 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7011 event pairs, 196 based on Foata normal form. 8/1227 useless extension candidates. Maximal degree in co-relation 9948. Up to 1143 conditions per place. [2024-06-27 19:50:54,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 13 changer transitions 13/195 dead transitions. [2024-06-27 19:50:54,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 195 transitions, 2203 flow [2024-06-27 19:50:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:50:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 19:50:54,118 INFO L175 Difference]: Start difference. First operand has 267 places, 178 transitions, 1735 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:50:54,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 195 transitions, 2203 flow [2024-06-27 19:50:54,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 195 transitions, 2163 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:54,730 INFO L231 Difference]: Finished difference. Result has 266 places, 174 transitions, 1700 flow [2024-06-27 19:50:54,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=266, PETRI_TRANSITIONS=174} [2024-06-27 19:50:54,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 19:50:54,730 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 174 transitions, 1700 flow [2024-06-27 19:50:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:54,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:54,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:54,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 19:50:54,731 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:54,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1201496248, now seen corresponding path program 23 times [2024-06-27 19:50:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:54,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151567472] [2024-06-27 19:50:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151567472] [2024-06-27 19:50:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151567472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:56,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:56,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334236334] [2024-06-27 19:50:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:56,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:56,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 174 transitions, 1700 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:56,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:56,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:56,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:56,668 INFO L124 PetriNetUnfolderBase]: 591/1201 cut-off events. [2024-06-27 19:50:56,668 INFO L125 PetriNetUnfolderBase]: For 245921/245921 co-relation queries the response was YES. [2024-06-27 19:50:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9933 conditions, 1201 events. 591/1201 cut-off events. For 245921/245921 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6915 event pairs, 198 based on Foata normal form. 8/1207 useless extension candidates. Maximal degree in co-relation 9826. Up to 1079 conditions per place. [2024-06-27 19:50:56,676 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 18 changer transitions 13/196 dead transitions. [2024-06-27 19:50:56,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 196 transitions, 2222 flow [2024-06-27 19:50:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:50:56,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 19:50:56,677 INFO L175 Difference]: Start difference. First operand has 266 places, 174 transitions, 1700 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:50:56,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 196 transitions, 2222 flow [2024-06-27 19:50:57,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 196 transitions, 2190 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:57,224 INFO L231 Difference]: Finished difference. Result has 263 places, 172 transitions, 1685 flow [2024-06-27 19:50:57,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1685, PETRI_PLACES=263, PETRI_TRANSITIONS=172} [2024-06-27 19:50:57,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-27 19:50:57,225 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 172 transitions, 1685 flow [2024-06-27 19:50:57,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:57,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:57,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:57,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 19:50:57,225 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:57,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1201487878, now seen corresponding path program 24 times [2024-06-27 19:50:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547031840] [2024-06-27 19:50:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547031840] [2024-06-27 19:50:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547031840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:58,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:58,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:50:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617975321] [2024-06-27 19:50:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:50:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:50:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:50:58,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:50:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 172 transitions, 1685 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:58,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:58,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:50:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:58,938 INFO L124 PetriNetUnfolderBase]: 565/1151 cut-off events. [2024-06-27 19:50:58,938 INFO L125 PetriNetUnfolderBase]: For 234732/234732 co-relation queries the response was YES. [2024-06-27 19:50:58,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1151 events. 565/1151 cut-off events. For 234732/234732 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6544 event pairs, 182 based on Foata normal form. 8/1157 useless extension candidates. Maximal degree in co-relation 9510. Up to 1069 conditions per place. [2024-06-27 19:50:58,946 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 160 selfloop transitions, 16 changer transitions 12/190 dead transitions. [2024-06-27 19:50:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 190 transitions, 2149 flow [2024-06-27 19:50:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:50:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:50:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:50:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:50:58,947 INFO L175 Difference]: Start difference. First operand has 263 places, 172 transitions, 1685 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:50:58,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 190 transitions, 2149 flow [2024-06-27 19:50:59,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 190 transitions, 2107 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:50:59,428 INFO L231 Difference]: Finished difference. Result has 262 places, 169 transitions, 1638 flow [2024-06-27 19:50:59,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1638, PETRI_PLACES=262, PETRI_TRANSITIONS=169} [2024-06-27 19:50:59,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-27 19:50:59,429 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 169 transitions, 1638 flow [2024-06-27 19:50:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:59,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:59,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:59,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 19:50:59,429 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:50:59,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1024349724, now seen corresponding path program 30 times [2024-06-27 19:50:59,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:59,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093803032] [2024-06-27 19:50:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:59,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:00,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093803032] [2024-06-27 19:51:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093803032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:00,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:00,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:00,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843278294] [2024-06-27 19:51:00,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:00,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:00,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 169 transitions, 1638 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:00,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:00,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:00,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:01,460 INFO L124 PetriNetUnfolderBase]: 545/1115 cut-off events. [2024-06-27 19:51:01,461 INFO L125 PetriNetUnfolderBase]: For 228927/228927 co-relation queries the response was YES. [2024-06-27 19:51:01,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1115 events. 545/1115 cut-off events. For 228927/228927 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6318 event pairs, 180 based on Foata normal form. 10/1123 useless extension candidates. Maximal degree in co-relation 8942. Up to 1006 conditions per place. [2024-06-27 19:51:01,471 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 17 changer transitions 14/189 dead transitions. [2024-06-27 19:51:01,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 189 transitions, 2090 flow [2024-06-27 19:51:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 19:51:01,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 19:51:01,472 INFO L175 Difference]: Start difference. First operand has 262 places, 169 transitions, 1638 flow. Second operand 12 states and 127 transitions. [2024-06-27 19:51:01,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 189 transitions, 2090 flow [2024-06-27 19:51:01,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 189 transitions, 2052 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:01,972 INFO L231 Difference]: Finished difference. Result has 259 places, 163 transitions, 1592 flow [2024-06-27 19:51:01,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1592, PETRI_PLACES=259, PETRI_TRANSITIONS=163} [2024-06-27 19:51:01,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 19:51:01,972 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 163 transitions, 1592 flow [2024-06-27 19:51:01,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:01,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:01,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:01,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 19:51:01,972 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:01,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1391624676, now seen corresponding path program 31 times [2024-06-27 19:51:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698143764] [2024-06-27 19:51:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:01,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698143764] [2024-06-27 19:51:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698143764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:51:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856198071] [2024-06-27 19:51:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:51:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:51:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:51:03,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:03,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 163 transitions, 1592 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:03,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:03,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:03,481 INFO L124 PetriNetUnfolderBase]: 548/1132 cut-off events. [2024-06-27 19:51:03,481 INFO L125 PetriNetUnfolderBase]: For 244341/244341 co-relation queries the response was YES. [2024-06-27 19:51:03,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9761 conditions, 1132 events. 548/1132 cut-off events. For 244341/244341 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6465 event pairs, 170 based on Foata normal form. 8/1138 useless extension candidates. Maximal degree in co-relation 9658. Up to 638 conditions per place. [2024-06-27 19:51:03,490 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 44 changer transitions 11/187 dead transitions. [2024-06-27 19:51:03,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 187 transitions, 2250 flow [2024-06-27 19:51:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:51:03,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 19:51:03,491 INFO L175 Difference]: Start difference. First operand has 259 places, 163 transitions, 1592 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:51:03,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 187 transitions, 2250 flow [2024-06-27 19:51:03,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 187 transitions, 2168 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:51:03,877 INFO L231 Difference]: Finished difference. Result has 255 places, 159 transitions, 1573 flow [2024-06-27 19:51:03,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=255, PETRI_TRANSITIONS=159} [2024-06-27 19:51:03,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 19:51:03,877 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 159 transitions, 1573 flow [2024-06-27 19:51:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:03,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:03,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 19:51:03,877 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:03,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1437671608, now seen corresponding path program 25 times [2024-06-27 19:51:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766788710] [2024-06-27 19:51:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:05,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:05,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766788710] [2024-06-27 19:51:05,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766788710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:05,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:05,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066040261] [2024-06-27 19:51:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:05,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:05,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:05,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 159 transitions, 1573 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:05,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:05,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:05,744 INFO L124 PetriNetUnfolderBase]: 529/1091 cut-off events. [2024-06-27 19:51:05,745 INFO L125 PetriNetUnfolderBase]: For 224259/224259 co-relation queries the response was YES. [2024-06-27 19:51:05,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9692 conditions, 1091 events. 529/1091 cut-off events. For 224259/224259 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6164 event pairs, 184 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 9590. Up to 1023 conditions per place. [2024-06-27 19:51:05,754 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-06-27 19:51:05,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 176 transitions, 2001 flow [2024-06-27 19:51:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:51:05,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 19:51:05,755 INFO L175 Difference]: Start difference. First operand has 255 places, 159 transitions, 1573 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:51:05,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 176 transitions, 2001 flow [2024-06-27 19:51:06,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 176 transitions, 1901 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:51:06,204 INFO L231 Difference]: Finished difference. Result has 250 places, 160 transitions, 1565 flow [2024-06-27 19:51:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1565, PETRI_PLACES=250, PETRI_TRANSITIONS=160} [2024-06-27 19:51:06,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 19:51:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 160 transitions, 1565 flow [2024-06-27 19:51:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:06,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:06,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 19:51:06,205 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:06,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1008699132, now seen corresponding path program 26 times [2024-06-27 19:51:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:06,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356902788] [2024-06-27 19:51:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356902788] [2024-06-27 19:51:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356902788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:07,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357362484] [2024-06-27 19:51:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:07,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:07,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:07,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:07,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 160 transitions, 1565 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:07,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:07,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:07,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:07,862 INFO L124 PetriNetUnfolderBase]: 533/1099 cut-off events. [2024-06-27 19:51:07,862 INFO L125 PetriNetUnfolderBase]: For 212303/212303 co-relation queries the response was YES. [2024-06-27 19:51:07,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9648 conditions, 1099 events. 533/1099 cut-off events. For 212303/212303 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6197 event pairs, 188 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 9548. Up to 1006 conditions per place. [2024-06-27 19:51:07,872 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 32 changer transitions 0/177 dead transitions. [2024-06-27 19:51:07,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 177 transitions, 1997 flow [2024-06-27 19:51:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:51:07,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 19:51:07,873 INFO L175 Difference]: Start difference. First operand has 250 places, 160 transitions, 1565 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:51:07,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 177 transitions, 1997 flow [2024-06-27 19:51:08,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1881 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:08,338 INFO L231 Difference]: Finished difference. Result has 251 places, 161 transitions, 1557 flow [2024-06-27 19:51:08,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1557, PETRI_PLACES=251, PETRI_TRANSITIONS=161} [2024-06-27 19:51:08,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-27 19:51:08,339 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 161 transitions, 1557 flow [2024-06-27 19:51:08,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:08,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 19:51:08,339 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:08,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1719799496, now seen corresponding path program 27 times [2024-06-27 19:51:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506767742] [2024-06-27 19:51:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506767742] [2024-06-27 19:51:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506767742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:09,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582059977] [2024-06-27 19:51:09,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:09,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:09,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:09,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:09,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 161 transitions, 1557 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:09,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:09,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:09,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:10,079 INFO L124 PetriNetUnfolderBase]: 545/1127 cut-off events. [2024-06-27 19:51:10,080 INFO L125 PetriNetUnfolderBase]: For 237586/237586 co-relation queries the response was YES. [2024-06-27 19:51:10,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 1127 events. 545/1127 cut-off events. For 237586/237586 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6435 event pairs, 188 based on Foata normal form. 8/1133 useless extension candidates. Maximal degree in co-relation 9704. Up to 1017 conditions per place. [2024-06-27 19:51:10,089 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 14 changer transitions 13/182 dead transitions. [2024-06-27 19:51:10,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 182 transitions, 2049 flow [2024-06-27 19:51:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:51:10,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 19:51:10,090 INFO L175 Difference]: Start difference. First operand has 251 places, 161 transitions, 1557 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:51:10,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 182 transitions, 2049 flow [2024-06-27 19:51:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 182 transitions, 1951 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:51:10,539 INFO L231 Difference]: Finished difference. Result has 254 places, 159 transitions, 1468 flow [2024-06-27 19:51:10,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1468, PETRI_PLACES=254, PETRI_TRANSITIONS=159} [2024-06-27 19:51:10,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 19:51:10,539 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 159 transitions, 1468 flow [2024-06-27 19:51:10,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:10,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:10,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:10,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 19:51:10,539 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:10,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1711747556, now seen corresponding path program 28 times [2024-06-27 19:51:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:10,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597371804] [2024-06-27 19:51:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:11,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:11,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597371804] [2024-06-27 19:51:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597371804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:11,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676771003] [2024-06-27 19:51:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:11,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:11,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:11,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 159 transitions, 1468 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:11,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:11,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:12,139 INFO L124 PetriNetUnfolderBase]: 511/1057 cut-off events. [2024-06-27 19:51:12,139 INFO L125 PetriNetUnfolderBase]: For 224087/224087 co-relation queries the response was YES. [2024-06-27 19:51:12,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9473 conditions, 1057 events. 511/1057 cut-off events. For 224087/224087 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5920 event pairs, 178 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 9370. Up to 1011 conditions per place. [2024-06-27 19:51:12,148 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 156 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-06-27 19:51:12,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 174 transitions, 1886 flow [2024-06-27 19:51:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:51:12,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 19:51:12,149 INFO L175 Difference]: Start difference. First operand has 254 places, 159 transitions, 1468 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:51:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 174 transitions, 1886 flow [2024-06-27 19:51:12,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 174 transitions, 1852 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:12,635 INFO L231 Difference]: Finished difference. Result has 253 places, 160 transitions, 1512 flow [2024-06-27 19:51:12,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=253, PETRI_TRANSITIONS=160} [2024-06-27 19:51:12,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 19:51:12,636 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 160 transitions, 1512 flow [2024-06-27 19:51:12,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:12,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:12,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:12,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 19:51:12,636 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash -21897208, now seen corresponding path program 29 times [2024-06-27 19:51:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630566045] [2024-06-27 19:51:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630566045] [2024-06-27 19:51:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630566045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:14,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:14,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611047524] [2024-06-27 19:51:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:14,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:14,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:14,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:14,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 160 transitions, 1512 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:14,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:14,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:14,760 INFO L124 PetriNetUnfolderBase]: 524/1088 cut-off events. [2024-06-27 19:51:14,760 INFO L125 PetriNetUnfolderBase]: For 252153/252153 co-relation queries the response was YES. [2024-06-27 19:51:14,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9400 conditions, 1088 events. 524/1088 cut-off events. For 252153/252153 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6183 event pairs, 175 based on Foata normal form. 12/1098 useless extension candidates. Maximal degree in co-relation 9298. Up to 948 conditions per place. [2024-06-27 19:51:14,769 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 145 selfloop transitions, 26 changer transitions 7/180 dead transitions. [2024-06-27 19:51:14,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 180 transitions, 1986 flow [2024-06-27 19:51:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:51:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 19:51:14,770 INFO L175 Difference]: Start difference. First operand has 253 places, 160 transitions, 1512 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:51:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 180 transitions, 1986 flow [2024-06-27 19:51:15,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 180 transitions, 1886 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:15,228 INFO L231 Difference]: Finished difference. Result has 254 places, 158 transitions, 1490 flow [2024-06-27 19:51:15,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1490, PETRI_PLACES=254, PETRI_TRANSITIONS=158} [2024-06-27 19:51:15,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 19:51:15,229 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 158 transitions, 1490 flow [2024-06-27 19:51:15,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:15,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:15,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:15,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 19:51:15,229 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:15,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1711459256, now seen corresponding path program 30 times [2024-06-27 19:51:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683744665] [2024-06-27 19:51:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683744665] [2024-06-27 19:51:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683744665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079392402] [2024-06-27 19:51:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:16,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:16,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:16,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 158 transitions, 1490 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:16,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:16,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:16,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:16,908 INFO L124 PetriNetUnfolderBase]: 512/1068 cut-off events. [2024-06-27 19:51:16,908 INFO L125 PetriNetUnfolderBase]: For 241038/241038 co-relation queries the response was YES. [2024-06-27 19:51:16,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9355 conditions, 1068 events. 512/1068 cut-off events. For 241038/241038 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6065 event pairs, 177 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 9253. Up to 998 conditions per place. [2024-06-27 19:51:16,916 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 12 changer transitions 12/175 dead transitions. [2024-06-27 19:51:16,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 175 transitions, 1926 flow [2024-06-27 19:51:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:51:16,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 19:51:16,917 INFO L175 Difference]: Start difference. First operand has 254 places, 158 transitions, 1490 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:51:16,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 175 transitions, 1926 flow [2024-06-27 19:51:17,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 175 transitions, 1842 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:51:17,371 INFO L231 Difference]: Finished difference. Result has 255 places, 155 transitions, 1410 flow [2024-06-27 19:51:17,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1410, PETRI_PLACES=255, PETRI_TRANSITIONS=155} [2024-06-27 19:51:17,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 19:51:17,371 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 155 transitions, 1410 flow [2024-06-27 19:51:17,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:17,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:17,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:17,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 19:51:17,371 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:17,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash 36022104, now seen corresponding path program 31 times [2024-06-27 19:51:17,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:17,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322603096] [2024-06-27 19:51:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:17,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:18,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322603096] [2024-06-27 19:51:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322603096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:18,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405208407] [2024-06-27 19:51:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:18,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:18,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 155 transitions, 1410 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:18,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:18,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:19,395 INFO L124 PetriNetUnfolderBase]: 494/1030 cut-off events. [2024-06-27 19:51:19,395 INFO L125 PetriNetUnfolderBase]: For 221624/221624 co-relation queries the response was YES. [2024-06-27 19:51:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 1030 events. 494/1030 cut-off events. For 221624/221624 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5773 event pairs, 175 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 9027. Up to 972 conditions per place. [2024-06-27 19:51:19,404 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-06-27 19:51:19,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 171 transitions, 1828 flow [2024-06-27 19:51:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:51:19,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 19:51:19,405 INFO L175 Difference]: Start difference. First operand has 255 places, 155 transitions, 1410 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:51:19,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 171 transitions, 1828 flow [2024-06-27 19:51:19,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 171 transitions, 1798 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:19,899 INFO L231 Difference]: Finished difference. Result has 251 places, 156 transitions, 1466 flow [2024-06-27 19:51:19,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1466, PETRI_PLACES=251, PETRI_TRANSITIONS=156} [2024-06-27 19:51:19,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-27 19:51:19,899 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 156 transitions, 1466 flow [2024-06-27 19:51:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:19,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:19,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 19:51:19,900 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:19,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash -193954806, now seen corresponding path program 32 times [2024-06-27 19:51:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:19,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642394400] [2024-06-27 19:51:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:21,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642394400] [2024-06-27 19:51:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642394400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:21,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:21,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304849909] [2024-06-27 19:51:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:21,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:21,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:21,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 156 transitions, 1466 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:21,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:21,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:21,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:21,874 INFO L124 PetriNetUnfolderBase]: 527/1097 cut-off events. [2024-06-27 19:51:21,874 INFO L125 PetriNetUnfolderBase]: For 246335/246335 co-relation queries the response was YES. [2024-06-27 19:51:21,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1097 events. 527/1097 cut-off events. For 246335/246335 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6258 event pairs, 188 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 10065. Up to 919 conditions per place. [2024-06-27 19:51:21,883 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-27 19:51:21,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 178 transitions, 2108 flow [2024-06-27 19:51:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:51:21,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:51:21,884 INFO L175 Difference]: Start difference. First operand has 251 places, 156 transitions, 1466 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:51:21,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 178 transitions, 2108 flow [2024-06-27 19:51:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 178 transitions, 2032 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:51:22,339 INFO L231 Difference]: Finished difference. Result has 253 places, 157 transitions, 1508 flow [2024-06-27 19:51:22,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=253, PETRI_TRANSITIONS=157} [2024-06-27 19:51:22,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 19:51:22,339 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 157 transitions, 1508 flow [2024-06-27 19:51:22,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:22,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:22,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 19:51:22,339 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:22,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1941436166, now seen corresponding path program 33 times [2024-06-27 19:51:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:22,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627254390] [2024-06-27 19:51:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627254390] [2024-06-27 19:51:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627254390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659055708] [2024-06-27 19:51:23,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:23,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:23,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 157 transitions, 1508 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:23,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:23,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:23,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:24,270 INFO L124 PetriNetUnfolderBase]: 524/1092 cut-off events. [2024-06-27 19:51:24,271 INFO L125 PetriNetUnfolderBase]: For 244595/244595 co-relation queries the response was YES. [2024-06-27 19:51:24,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9984 conditions, 1092 events. 524/1092 cut-off events. For 244595/244595 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6251 event pairs, 195 based on Foata normal form. 2/1092 useless extension candidates. Maximal degree in co-relation 9883. Up to 1022 conditions per place. [2024-06-27 19:51:24,280 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 21 changer transitions 0/172 dead transitions. [2024-06-27 19:51:24,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 172 transitions, 1886 flow [2024-06-27 19:51:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:51:24,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 19:51:24,281 INFO L175 Difference]: Start difference. First operand has 253 places, 157 transitions, 1508 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:51:24,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 172 transitions, 1886 flow [2024-06-27 19:51:24,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 172 transitions, 1778 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:51:24,790 INFO L231 Difference]: Finished difference. Result has 255 places, 157 transitions, 1446 flow [2024-06-27 19:51:24,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1446, PETRI_PLACES=255, PETRI_TRANSITIONS=157} [2024-06-27 19:51:24,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 19:51:24,791 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 157 transitions, 1446 flow [2024-06-27 19:51:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:24,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:24,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 19:51:24,791 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:24,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash -200634500, now seen corresponding path program 32 times [2024-06-27 19:51:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:24,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260558614] [2024-06-27 19:51:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260558614] [2024-06-27 19:51:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260558614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:25,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:25,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:51:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057814687] [2024-06-27 19:51:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:51:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:51:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:51:25,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:25,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 157 transitions, 1446 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:25,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:25,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:25,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:26,249 INFO L124 PetriNetUnfolderBase]: 536/1120 cut-off events. [2024-06-27 19:51:26,249 INFO L125 PetriNetUnfolderBase]: For 270663/270663 co-relation queries the response was YES. [2024-06-27 19:51:26,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10027 conditions, 1120 events. 536/1120 cut-off events. For 270663/270663 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6431 event pairs, 189 based on Foata normal form. 8/1126 useless extension candidates. Maximal degree in co-relation 9925. Up to 898 conditions per place. [2024-06-27 19:51:26,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 25 changer transitions 7/181 dead transitions. [2024-06-27 19:51:26,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 181 transitions, 2074 flow [2024-06-27 19:51:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:51:26,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 19:51:26,259 INFO L175 Difference]: Start difference. First operand has 255 places, 157 transitions, 1446 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:51:26,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 181 transitions, 2074 flow [2024-06-27 19:51:26,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 181 transitions, 1867 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-27 19:51:26,790 INFO L231 Difference]: Finished difference. Result has 254 places, 155 transitions, 1277 flow [2024-06-27 19:51:26,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1277, PETRI_PLACES=254, PETRI_TRANSITIONS=155} [2024-06-27 19:51:26,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 19:51:26,790 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 155 transitions, 1277 flow [2024-06-27 19:51:26,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:26,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:26,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:26,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 19:51:26,791 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:26,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1948115860, now seen corresponding path program 33 times [2024-06-27 19:51:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:26,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612129671] [2024-06-27 19:51:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:28,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:28,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612129671] [2024-06-27 19:51:28,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612129671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:28,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:28,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976277425] [2024-06-27 19:51:28,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:28,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:28,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 155 transitions, 1277 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:28,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:28,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:28,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:28,791 INFO L124 PetriNetUnfolderBase]: 545/1143 cut-off events. [2024-06-27 19:51:28,792 INFO L125 PetriNetUnfolderBase]: For 297533/297533 co-relation queries the response was YES. [2024-06-27 19:51:28,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10377 conditions, 1143 events. 545/1143 cut-off events. For 297533/297533 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6618 event pairs, 204 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 10276. Up to 979 conditions per place. [2024-06-27 19:51:28,801 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 18 changer transitions 8/180 dead transitions. [2024-06-27 19:51:28,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 180 transitions, 1907 flow [2024-06-27 19:51:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:51:28,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 19:51:28,802 INFO L175 Difference]: Start difference. First operand has 254 places, 155 transitions, 1277 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:51:28,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 180 transitions, 1907 flow [2024-06-27 19:51:29,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 180 transitions, 1816 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 19:51:29,353 INFO L231 Difference]: Finished difference. Result has 252 places, 152 transitions, 1213 flow [2024-06-27 19:51:29,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1213, PETRI_PLACES=252, PETRI_TRANSITIONS=152} [2024-06-27 19:51:29,353 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 19:51:29,353 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 152 transitions, 1213 flow [2024-06-27 19:51:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:29,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:29,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:29,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 19:51:29,354 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:29,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -355319000, now seen corresponding path program 34 times [2024-06-27 19:51:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093172788] [2024-06-27 19:51:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:31,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093172788] [2024-06-27 19:51:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093172788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:31,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717309803] [2024-06-27 19:51:31,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:31,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:31,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:31,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 152 transitions, 1213 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:31,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:31,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:31,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:31,954 INFO L124 PetriNetUnfolderBase]: 513/1079 cut-off events. [2024-06-27 19:51:31,954 INFO L125 PetriNetUnfolderBase]: For 255987/255987 co-relation queries the response was YES. [2024-06-27 19:51:31,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9112 conditions, 1079 events. 513/1079 cut-off events. For 255987/255987 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6155 event pairs, 195 based on Foata normal form. 10/1087 useless extension candidates. Maximal degree in co-relation 9014. Up to 979 conditions per place. [2024-06-27 19:51:31,964 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 16 changer transitions 11/172 dead transitions. [2024-06-27 19:51:31,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 172 transitions, 1627 flow [2024-06-27 19:51:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:51:31,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 19:51:31,965 INFO L175 Difference]: Start difference. First operand has 252 places, 152 transitions, 1213 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:51:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 172 transitions, 1627 flow [2024-06-27 19:51:32,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 172 transitions, 1589 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:51:32,442 INFO L231 Difference]: Finished difference. Result has 250 places, 149 transitions, 1181 flow [2024-06-27 19:51:32,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1181, PETRI_PLACES=250, PETRI_TRANSITIONS=149} [2024-06-27 19:51:32,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 19:51:32,442 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 149 transitions, 1181 flow [2024-06-27 19:51:32,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:32,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:32,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 19:51:32,443 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:32,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash -200629850, now seen corresponding path program 35 times [2024-06-27 19:51:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082855602] [2024-06-27 19:51:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082855602] [2024-06-27 19:51:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082855602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:51:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129448783] [2024-06-27 19:51:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:33,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:51:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:33,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:51:33,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:51:33,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:33,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 149 transitions, 1181 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:33,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:33,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:33,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:34,156 INFO L124 PetriNetUnfolderBase]: 503/1065 cut-off events. [2024-06-27 19:51:34,156 INFO L125 PetriNetUnfolderBase]: For 249978/249978 co-relation queries the response was YES. [2024-06-27 19:51:34,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 1065 events. 503/1065 cut-off events. For 249978/249978 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6086 event pairs, 187 based on Foata normal form. 10/1073 useless extension candidates. Maximal degree in co-relation 8872. Up to 930 conditions per place. [2024-06-27 19:51:34,165 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 26 changer transitions 8/169 dead transitions. [2024-06-27 19:51:34,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 169 transitions, 1591 flow [2024-06-27 19:51:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:51:34,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 19:51:34,166 INFO L175 Difference]: Start difference. First operand has 250 places, 149 transitions, 1181 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:51:34,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 169 transitions, 1591 flow [2024-06-27 19:51:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 169 transitions, 1520 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 19:51:34,633 INFO L231 Difference]: Finished difference. Result has 244 places, 145 transitions, 1138 flow [2024-06-27 19:51:34,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1138, PETRI_PLACES=244, PETRI_TRANSITIONS=145} [2024-06-27 19:51:34,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 19:51:34,634 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 145 transitions, 1138 flow [2024-06-27 19:51:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:34,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:34,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 19:51:34,634 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:34,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:34,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1015192826, now seen corresponding path program 36 times [2024-06-27 19:51:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138727363] [2024-06-27 19:51:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138727363] [2024-06-27 19:51:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138727363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841062151] [2024-06-27 19:51:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:36,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:36,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 145 transitions, 1138 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:36,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:36,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:36,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:36,768 INFO L124 PetriNetUnfolderBase]: 494/1050 cut-off events. [2024-06-27 19:51:36,768 INFO L125 PetriNetUnfolderBase]: For 243939/243939 co-relation queries the response was YES. [2024-06-27 19:51:36,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 1050 events. 494/1050 cut-off events. For 243939/243939 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6011 event pairs, 185 based on Foata normal form. 10/1058 useless extension candidates. Maximal degree in co-relation 8728. Up to 915 conditions per place. [2024-06-27 19:51:36,775 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 131 selfloop transitions, 25 changer transitions 9/167 dead transitions. [2024-06-27 19:51:36,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 167 transitions, 1550 flow [2024-06-27 19:51:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:51:36,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 19:51:36,775 INFO L175 Difference]: Start difference. First operand has 244 places, 145 transitions, 1138 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:51:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 167 transitions, 1550 flow [2024-06-27 19:51:37,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 167 transitions, 1485 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 19:51:37,230 INFO L231 Difference]: Finished difference. Result has 242 places, 142 transitions, 1106 flow [2024-06-27 19:51:37,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1106, PETRI_PLACES=242, PETRI_TRANSITIONS=142} [2024-06-27 19:51:37,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-27 19:51:37,231 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 142 transitions, 1106 flow [2024-06-27 19:51:37,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:37,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:37,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:37,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 19:51:37,231 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:37,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1008936716, now seen corresponding path program 37 times [2024-06-27 19:51:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:37,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541688119] [2024-06-27 19:51:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:38,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541688119] [2024-06-27 19:51:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541688119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:38,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790062257] [2024-06-27 19:51:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:38,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:38,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 142 transitions, 1106 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:38,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:38,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:38,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:39,532 INFO L124 PetriNetUnfolderBase]: 470/1010 cut-off events. [2024-06-27 19:51:39,533 INFO L125 PetriNetUnfolderBase]: For 230475/230475 co-relation queries the response was YES. [2024-06-27 19:51:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 1010 events. 470/1010 cut-off events. For 230475/230475 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5764 event pairs, 181 based on Foata normal form. 10/1018 useless extension candidates. Maximal degree in co-relation 8224. Up to 892 conditions per place. [2024-06-27 19:51:39,540 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 130 selfloop transitions, 21 changer transitions 9/162 dead transitions. [2024-06-27 19:51:39,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 162 transitions, 1490 flow [2024-06-27 19:51:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:51:39,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 19:51:39,540 INFO L175 Difference]: Start difference. First operand has 242 places, 142 transitions, 1106 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:51:39,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 162 transitions, 1490 flow [2024-06-27 19:51:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 162 transitions, 1434 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:51:39,918 INFO L231 Difference]: Finished difference. Result has 240 places, 138 transitions, 1061 flow [2024-06-27 19:51:39,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1061, PETRI_PLACES=240, PETRI_TRANSITIONS=138} [2024-06-27 19:51:39,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 19:51:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 138 transitions, 1061 flow [2024-06-27 19:51:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:39,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:39,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 19:51:39,919 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:39,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 423161158, now seen corresponding path program 1 times [2024-06-27 19:51:39,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:39,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281530998] [2024-06-27 19:51:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281530998] [2024-06-27 19:51:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281530998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:41,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394606002] [2024-06-27 19:51:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:41,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:41,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:41,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 138 transitions, 1061 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:41,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:41,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:41,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:42,213 INFO L124 PetriNetUnfolderBase]: 437/947 cut-off events. [2024-06-27 19:51:42,214 INFO L125 PetriNetUnfolderBase]: For 192416/192416 co-relation queries the response was YES. [2024-06-27 19:51:42,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 947 events. 437/947 cut-off events. For 192416/192416 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5338 event pairs, 155 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 7442. Up to 864 conditions per place. [2024-06-27 19:51:42,221 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 11 changer transitions 20/159 dead transitions. [2024-06-27 19:51:42,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 159 transitions, 1439 flow [2024-06-27 19:51:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 19:51:42,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:51:42,221 INFO L175 Difference]: Start difference. First operand has 240 places, 138 transitions, 1061 flow. Second operand 12 states and 126 transitions. [2024-06-27 19:51:42,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 159 transitions, 1439 flow [2024-06-27 19:51:42,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 159 transitions, 1363 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 19:51:42,549 INFO L231 Difference]: Finished difference. Result has 237 places, 132 transitions, 981 flow [2024-06-27 19:51:42,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=981, PETRI_PLACES=237, PETRI_TRANSITIONS=132} [2024-06-27 19:51:42,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 19:51:42,550 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 132 transitions, 981 flow [2024-06-27 19:51:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:42,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:42,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:42,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 19:51:42,550 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:42,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1263007016, now seen corresponding path program 2 times [2024-06-27 19:51:42,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:42,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783281180] [2024-06-27 19:51:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:42,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:44,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783281180] [2024-06-27 19:51:44,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783281180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:44,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:44,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:51:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458433304] [2024-06-27 19:51:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:51:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:51:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:51:44,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:44,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 132 transitions, 981 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:44,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:44,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:44,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:44,427 INFO L124 PetriNetUnfolderBase]: 423/916 cut-off events. [2024-06-27 19:51:44,427 INFO L125 PetriNetUnfolderBase]: For 187432/187432 co-relation queries the response was YES. [2024-06-27 19:51:44,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7257 conditions, 916 events. 423/916 cut-off events. For 187432/187432 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5158 event pairs, 153 based on Foata normal form. 6/920 useless extension candidates. Maximal degree in co-relation 7164. Up to 595 conditions per place. [2024-06-27 19:51:44,434 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 96 selfloop transitions, 44 changer transitions 12/154 dead transitions. [2024-06-27 19:51:44,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 154 transitions, 1351 flow [2024-06-27 19:51:44,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:51:44,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 19:51:44,435 INFO L175 Difference]: Start difference. First operand has 237 places, 132 transitions, 981 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:51:44,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 154 transitions, 1351 flow [2024-06-27 19:51:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 154 transitions, 1315 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 19:51:44,714 INFO L231 Difference]: Finished difference. Result has 226 places, 128 transitions, 1016 flow [2024-06-27 19:51:44,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1016, PETRI_PLACES=226, PETRI_TRANSITIONS=128} [2024-06-27 19:51:44,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-27 19:51:44,715 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 128 transitions, 1016 flow [2024-06-27 19:51:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:44,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:44,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:44,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 19:51:44,715 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:44,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash -427079834, now seen corresponding path program 3 times [2024-06-27 19:51:44,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:44,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028770309] [2024-06-27 19:51:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:46,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028770309] [2024-06-27 19:51:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028770309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:46,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150441187] [2024-06-27 19:51:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:46,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:46,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:46,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 128 transitions, 1016 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:46,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:46,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:46,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:46,855 INFO L124 PetriNetUnfolderBase]: 399/864 cut-off events. [2024-06-27 19:51:46,856 INFO L125 PetriNetUnfolderBase]: For 153556/153556 co-relation queries the response was YES. [2024-06-27 19:51:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 864 events. 399/864 cut-off events. For 153556/153556 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4762 event pairs, 140 based on Foata normal form. 6/868 useless extension candidates. Maximal degree in co-relation 6366. Up to 552 conditions per place. [2024-06-27 19:51:46,861 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 44 changer transitions 11/149 dead transitions. [2024-06-27 19:51:46,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 149 transitions, 1370 flow [2024-06-27 19:51:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 19:51:46,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 19:51:46,862 INFO L175 Difference]: Start difference. First operand has 226 places, 128 transitions, 1016 flow. Second operand 12 states and 134 transitions. [2024-06-27 19:51:46,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 149 transitions, 1370 flow [2024-06-27 19:51:47,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 149 transitions, 1274 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:51:47,091 INFO L231 Difference]: Finished difference. Result has 220 places, 125 transitions, 995 flow [2024-06-27 19:51:47,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=995, PETRI_PLACES=220, PETRI_TRANSITIONS=125} [2024-06-27 19:51:47,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-27 19:51:47,091 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 125 transitions, 995 flow [2024-06-27 19:51:47,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:47,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:47,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:47,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 19:51:47,092 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:47,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1652195542, now seen corresponding path program 4 times [2024-06-27 19:51:47,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:47,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224096920] [2024-06-27 19:51:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:47,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224096920] [2024-06-27 19:51:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224096920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700352368] [2024-06-27 19:51:48,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:48,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:48,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 125 transitions, 995 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:48,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:48,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:48,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:49,286 INFO L124 PetriNetUnfolderBase]: 374/813 cut-off events. [2024-06-27 19:51:49,287 INFO L125 PetriNetUnfolderBase]: For 125964/125964 co-relation queries the response was YES. [2024-06-27 19:51:49,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 813 events. 374/813 cut-off events. For 125964/125964 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4412 event pairs, 124 based on Foata normal form. 6/817 useless extension candidates. Maximal degree in co-relation 5644. Up to 484 conditions per place. [2024-06-27 19:51:49,291 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 42 changer transitions 15/145 dead transitions. [2024-06-27 19:51:49,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 145 transitions, 1337 flow [2024-06-27 19:51:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:51:49,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 19:51:49,292 INFO L175 Difference]: Start difference. First operand has 220 places, 125 transitions, 995 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:51:49,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 145 transitions, 1337 flow [2024-06-27 19:51:49,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 145 transitions, 1243 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:51:49,499 INFO L231 Difference]: Finished difference. Result has 215 places, 120 transitions, 961 flow [2024-06-27 19:51:49,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=961, PETRI_PLACES=215, PETRI_TRANSITIONS=120} [2024-06-27 19:51:49,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-27 19:51:49,500 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 120 transitions, 961 flow [2024-06-27 19:51:49,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:49,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:49,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 19:51:49,500 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:49,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash -592566938, now seen corresponding path program 5 times [2024-06-27 19:51:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451553366] [2024-06-27 19:51:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451553366] [2024-06-27 19:51:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451553366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887206181] [2024-06-27 19:51:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:51,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 120 transitions, 961 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:51,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:52,276 INFO L124 PetriNetUnfolderBase]: 364/791 cut-off events. [2024-06-27 19:51:52,276 INFO L125 PetriNetUnfolderBase]: For 119146/119146 co-relation queries the response was YES. [2024-06-27 19:51:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5574 conditions, 791 events. 364/791 cut-off events. For 119146/119146 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4248 event pairs, 122 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 5490. Up to 466 conditions per place. [2024-06-27 19:51:52,282 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 77 selfloop transitions, 37 changer transitions 24/140 dead transitions. [2024-06-27 19:51:52,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 140 transitions, 1291 flow [2024-06-27 19:51:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:51:52,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:51:52,282 INFO L175 Difference]: Start difference. First operand has 215 places, 120 transitions, 961 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:51:52,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 140 transitions, 1291 flow [2024-06-27 19:51:52,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 140 transitions, 1197 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 19:51:52,472 INFO L231 Difference]: Finished difference. Result has 205 places, 110 transitions, 880 flow [2024-06-27 19:51:52,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=880, PETRI_PLACES=205, PETRI_TRANSITIONS=110} [2024-06-27 19:51:52,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-27 19:51:52,472 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 110 transitions, 880 flow [2024-06-27 19:51:52,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:52,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:52,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:52,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 19:51:52,472 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:52,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash 737370764, now seen corresponding path program 6 times [2024-06-27 19:51:52,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:52,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812018519] [2024-06-27 19:51:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:52,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812018519] [2024-06-27 19:51:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812018519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676683354] [2024-06-27 19:51:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:54,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:54,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:54,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 110 transitions, 880 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:54,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:54,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:54,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:55,429 INFO L124 PetriNetUnfolderBase]: 328/716 cut-off events. [2024-06-27 19:51:55,429 INFO L125 PetriNetUnfolderBase]: For 92858/92858 co-relation queries the response was YES. [2024-06-27 19:51:55,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4764 conditions, 716 events. 328/716 cut-off events. For 92858/92858 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3760 event pairs, 101 based on Foata normal form. 6/720 useless extension candidates. Maximal degree in co-relation 4684. Up to 554 conditions per place. [2024-06-27 19:51:55,434 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 85 selfloop transitions, 24 changer transitions 19/130 dead transitions. [2024-06-27 19:51:55,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 130 transitions, 1194 flow [2024-06-27 19:51:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:51:55,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 19:51:55,435 INFO L175 Difference]: Start difference. First operand has 205 places, 110 transitions, 880 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:51:55,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 130 transitions, 1194 flow [2024-06-27 19:51:55,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 130 transitions, 1077 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-27 19:51:55,569 INFO L231 Difference]: Finished difference. Result has 190 places, 101 transitions, 755 flow [2024-06-27 19:51:55,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=755, PETRI_PLACES=190, PETRI_TRANSITIONS=101} [2024-06-27 19:51:55,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-27 19:51:55,569 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 101 transitions, 755 flow [2024-06-27 19:51:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:55,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:55,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:55,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 19:51:55,570 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:55,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:55,570 INFO L85 PathProgramCache]: Analyzing trace with hash -731957448, now seen corresponding path program 7 times [2024-06-27 19:51:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:55,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508510114] [2024-06-27 19:51:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:57,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508510114] [2024-06-27 19:51:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508510114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:57,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:57,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134044498] [2024-06-27 19:51:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:57,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:57,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 101 transitions, 755 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:57,579 INFO L124 PetriNetUnfolderBase]: 306/670 cut-off events. [2024-06-27 19:51:57,579 INFO L125 PetriNetUnfolderBase]: For 77516/77516 co-relation queries the response was YES. [2024-06-27 19:51:57,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 670 events. 306/670 cut-off events. For 77516/77516 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3428 event pairs, 102 based on Foata normal form. 6/674 useless extension candidates. Maximal degree in co-relation 4210. Up to 543 conditions per place. [2024-06-27 19:51:57,583 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 16 changer transitions 20/118 dead transitions. [2024-06-27 19:51:57,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 118 transitions, 1033 flow [2024-06-27 19:51:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:51:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:51:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:51:57,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 19:51:57,583 INFO L175 Difference]: Start difference. First operand has 190 places, 101 transitions, 755 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:51:57,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 118 transitions, 1033 flow [2024-06-27 19:51:57,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 118 transitions, 971 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 19:51:57,695 INFO L231 Difference]: Finished difference. Result has 177 places, 92 transitions, 671 flow [2024-06-27 19:51:57,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=671, PETRI_PLACES=177, PETRI_TRANSITIONS=92} [2024-06-27 19:51:57,696 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-27 19:51:57,696 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 92 transitions, 671 flow [2024-06-27 19:51:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:57,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:57,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:57,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 19:51:57,697 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:51:57,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash -788802474, now seen corresponding path program 8 times [2024-06-27 19:51:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932524198] [2024-06-27 19:51:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932524198] [2024-06-27 19:51:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932524198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:59,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:51:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029271580] [2024-06-27 19:51:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:51:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:51:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:51:59,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:51:59,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 92 transitions, 671 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:59,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:51:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:59,945 INFO L124 PetriNetUnfolderBase]: 280/616 cut-off events. [2024-06-27 19:51:59,945 INFO L125 PetriNetUnfolderBase]: For 67546/67546 co-relation queries the response was YES. [2024-06-27 19:51:59,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 616 events. 280/616 cut-off events. For 67546/67546 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3081 event pairs, 100 based on Foata normal form. 6/620 useless extension candidates. Maximal degree in co-relation 3862. Up to 499 conditions per place. [2024-06-27 19:51:59,949 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 10 changer transitions 28/110 dead transitions. [2024-06-27 19:51:59,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 110 transitions, 933 flow [2024-06-27 19:51:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:51:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:51:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 19:51:59,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 19:51:59,950 INFO L175 Difference]: Start difference. First operand has 177 places, 92 transitions, 671 flow. Second operand 12 states and 126 transitions. [2024-06-27 19:51:59,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 110 transitions, 933 flow [2024-06-27 19:52:00,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 110 transitions, 891 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 19:52:00,039 INFO L231 Difference]: Finished difference. Result has 166 places, 79 transitions, 565 flow [2024-06-27 19:52:00,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=565, PETRI_PLACES=166, PETRI_TRANSITIONS=79} [2024-06-27 19:52:00,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-27 19:52:00,040 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 79 transitions, 565 flow [2024-06-27 19:52:00,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:00,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:00,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 19:52:00,040 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1605687784, now seen corresponding path program 9 times [2024-06-27 19:52:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832097376] [2024-06-27 19:52:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832097376] [2024-06-27 19:52:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832097376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118251089] [2024-06-27 19:52:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:02,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:02,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:02,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 79 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:02,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:02,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:02,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:03,097 INFO L124 PetriNetUnfolderBase]: 255/554 cut-off events. [2024-06-27 19:52:03,098 INFO L125 PetriNetUnfolderBase]: For 58258/58258 co-relation queries the response was YES. [2024-06-27 19:52:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 554 events. 255/554 cut-off events. For 58258/58258 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2715 event pairs, 92 based on Foata normal form. 6/559 useless extension candidates. Maximal degree in co-relation 3501. Up to 371 conditions per place. [2024-06-27 19:52:03,100 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 54 selfloop transitions, 28 changer transitions 11/95 dead transitions. [2024-06-27 19:52:03,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 95 transitions, 793 flow [2024-06-27 19:52:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:52:03,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 19:52:03,101 INFO L175 Difference]: Start difference. First operand has 166 places, 79 transitions, 565 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:52:03,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 95 transitions, 793 flow [2024-06-27 19:52:03,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 95 transitions, 735 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-27 19:52:03,179 INFO L231 Difference]: Finished difference. Result has 144 places, 76 transitions, 549 flow [2024-06-27 19:52:03,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=549, PETRI_PLACES=144, PETRI_TRANSITIONS=76} [2024-06-27 19:52:03,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 19:52:03,179 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 76 transitions, 549 flow [2024-06-27 19:52:03,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:03,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:03,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 19:52:03,179 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:03,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:03,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1398146248, now seen corresponding path program 10 times [2024-06-27 19:52:03,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132691344] [2024-06-27 19:52:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132691344] [2024-06-27 19:52:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132691344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:04,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544560790] [2024-06-27 19:52:04,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:04,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:04,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:04,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:04,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 76 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:04,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:04,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:05,165 INFO L124 PetriNetUnfolderBase]: 245/536 cut-off events. [2024-06-27 19:52:05,165 INFO L125 PetriNetUnfolderBase]: For 43902/43902 co-relation queries the response was YES. [2024-06-27 19:52:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 536 events. 245/536 cut-off events. For 43902/43902 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2609 event pairs, 86 based on Foata normal form. 6/541 useless extension candidates. Maximal degree in co-relation 3220. Up to 341 conditions per place. [2024-06-27 19:52:05,168 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 52 selfloop transitions, 28 changer transitions 10/92 dead transitions. [2024-06-27 19:52:05,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 92 transitions, 769 flow [2024-06-27 19:52:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:52:05,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 19:52:05,169 INFO L175 Difference]: Start difference. First operand has 144 places, 76 transitions, 549 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:52:05,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 92 transitions, 769 flow [2024-06-27 19:52:05,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 92 transitions, 707 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:52:05,231 INFO L231 Difference]: Finished difference. Result has 140 places, 72 transitions, 525 flow [2024-06-27 19:52:05,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=140, PETRI_TRANSITIONS=72} [2024-06-27 19:52:05,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-27 19:52:05,231 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 72 transitions, 525 flow [2024-06-27 19:52:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:05,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:05,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:05,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 19:52:05,231 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:05,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 601989974, now seen corresponding path program 11 times [2024-06-27 19:52:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931413446] [2024-06-27 19:52:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:07,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931413446] [2024-06-27 19:52:07,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931413446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:07,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:07,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959057886] [2024-06-27 19:52:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:07,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:07,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 72 transitions, 525 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:07,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:07,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:07,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:07,448 INFO L124 PetriNetUnfolderBase]: 233/512 cut-off events. [2024-06-27 19:52:07,448 INFO L125 PetriNetUnfolderBase]: For 40060/40060 co-relation queries the response was YES. [2024-06-27 19:52:07,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 512 events. 233/512 cut-off events. For 40060/40060 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2462 event pairs, 88 based on Foata normal form. 6/517 useless extension candidates. Maximal degree in co-relation 3084. Up to 434 conditions per place. [2024-06-27 19:52:07,450 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 10 changer transitions 15/87 dead transitions. [2024-06-27 19:52:07,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 87 transitions, 735 flow [2024-06-27 19:52:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:52:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:52:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:52:07,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 19:52:07,451 INFO L175 Difference]: Start difference. First operand has 140 places, 72 transitions, 525 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:52:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 87 transitions, 735 flow [2024-06-27 19:52:07,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 87 transitions, 671 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 19:52:07,497 INFO L231 Difference]: Finished difference. Result has 133 places, 67 transitions, 450 flow [2024-06-27 19:52:07,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=450, PETRI_PLACES=133, PETRI_TRANSITIONS=67} [2024-06-27 19:52:07,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-27 19:52:07,498 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 67 transitions, 450 flow [2024-06-27 19:52:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:07,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:07,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 19:52:07,498 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:07,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -616104504, now seen corresponding path program 12 times [2024-06-27 19:52:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606158614] [2024-06-27 19:52:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606158614] [2024-06-27 19:52:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606158614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:09,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:09,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437428535] [2024-06-27 19:52:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:09,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:09,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:09,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:09,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 67 transitions, 450 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:09,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:09,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:09,604 INFO L124 PetriNetUnfolderBase]: 202/447 cut-off events. [2024-06-27 19:52:09,604 INFO L125 PetriNetUnfolderBase]: For 29706/29706 co-relation queries the response was YES. [2024-06-27 19:52:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 447 events. 202/447 cut-off events. For 29706/29706 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2065 event pairs, 75 based on Foata normal form. 6/452 useless extension candidates. Maximal degree in co-relation 2506. Up to 364 conditions per place. [2024-06-27 19:52:09,606 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 6 changer transitions 24/83 dead transitions. [2024-06-27 19:52:09,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 83 transitions, 654 flow [2024-06-27 19:52:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 19:52:09,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 19:52:09,606 INFO L175 Difference]: Start difference. First operand has 133 places, 67 transitions, 450 flow. Second operand 12 states and 118 transitions. [2024-06-27 19:52:09,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 83 transitions, 654 flow [2024-06-27 19:52:09,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 83 transitions, 614 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:52:09,635 INFO L231 Difference]: Finished difference. Result has 126 places, 56 transitions, 352 flow [2024-06-27 19:52:09,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=126, PETRI_TRANSITIONS=56} [2024-06-27 19:52:09,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-27 19:52:09,636 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 56 transitions, 352 flow [2024-06-27 19:52:09,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:09,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:09,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:09,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 19:52:09,636 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:09,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1870228936, now seen corresponding path program 13 times [2024-06-27 19:52:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:09,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727204339] [2024-06-27 19:52:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727204339] [2024-06-27 19:52:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727204339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:11,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725289284] [2024-06-27 19:52:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:11,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:11,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 56 transitions, 352 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:11,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:11,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:11,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:11,772 INFO L124 PetriNetUnfolderBase]: 164/365 cut-off events. [2024-06-27 19:52:11,772 INFO L125 PetriNetUnfolderBase]: For 22318/22318 co-relation queries the response was YES. [2024-06-27 19:52:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 365 events. 164/365 cut-off events. For 22318/22318 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1570 event pairs, 62 based on Foata normal form. 6/370 useless extension candidates. Maximal degree in co-relation 1944. Up to 300 conditions per place. [2024-06-27 19:52:11,773 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 48 selfloop transitions, 8 changer transitions 13/71 dead transitions. [2024-06-27 19:52:11,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 71 transitions, 528 flow [2024-06-27 19:52:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-27 19:52:11,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-27 19:52:11,774 INFO L175 Difference]: Start difference. First operand has 126 places, 56 transitions, 352 flow. Second operand 12 states and 117 transitions. [2024-06-27 19:52:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 71 transitions, 528 flow [2024-06-27 19:52:11,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 71 transitions, 465 flow, removed 10 selfloop flow, removed 18 redundant places. [2024-06-27 19:52:11,791 INFO L231 Difference]: Finished difference. Result has 108 places, 52 transitions, 294 flow [2024-06-27 19:52:11,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=294, PETRI_PLACES=108, PETRI_TRANSITIONS=52} [2024-06-27 19:52:11,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 19:52:11,791 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 52 transitions, 294 flow [2024-06-27 19:52:11,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:11,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:11,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 19:52:11,792 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:11,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1196797528, now seen corresponding path program 14 times [2024-06-27 19:52:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334900999] [2024-06-27 19:52:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334900999] [2024-06-27 19:52:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334900999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:13,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:13,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856317432] [2024-06-27 19:52:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:13,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:13,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 52 transitions, 294 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:13,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:13,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:13,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:13,889 INFO L124 PetriNetUnfolderBase]: 140/313 cut-off events. [2024-06-27 19:52:13,889 INFO L125 PetriNetUnfolderBase]: For 14596/14596 co-relation queries the response was YES. [2024-06-27 19:52:13,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 313 events. 140/313 cut-off events. For 14596/14596 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1260 event pairs, 49 based on Foata normal form. 6/318 useless extension candidates. Maximal degree in co-relation 1434. Up to 192 conditions per place. [2024-06-27 19:52:13,890 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 37 selfloop transitions, 15 changer transitions 14/68 dead transitions. [2024-06-27 19:52:13,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 68 transitions, 460 flow [2024-06-27 19:52:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 19:52:13,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 19:52:13,891 INFO L175 Difference]: Start difference. First operand has 108 places, 52 transitions, 294 flow. Second operand 12 states and 121 transitions. [2024-06-27 19:52:13,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 68 transitions, 460 flow [2024-06-27 19:52:13,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 68 transitions, 436 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:52:13,901 INFO L231 Difference]: Finished difference. Result has 102 places, 47 transitions, 278 flow [2024-06-27 19:52:13,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=278, PETRI_PLACES=102, PETRI_TRANSITIONS=47} [2024-06-27 19:52:13,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 19:52:13,902 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 47 transitions, 278 flow [2024-06-27 19:52:13,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:13,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:13,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 19:52:13,902 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:13,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2071577656, now seen corresponding path program 15 times [2024-06-27 19:52:13,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:13,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812288098] [2024-06-27 19:52:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812288098] [2024-06-27 19:52:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812288098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:15,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709531327] [2024-06-27 19:52:15,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:15,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:15,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 47 transitions, 278 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:15,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:15,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:15,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:16,027 INFO L124 PetriNetUnfolderBase]: 130/291 cut-off events. [2024-06-27 19:52:16,027 INFO L125 PetriNetUnfolderBase]: For 12222/12222 co-relation queries the response was YES. [2024-06-27 19:52:16,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 291 events. 130/291 cut-off events. For 12222/12222 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1131 event pairs, 47 based on Foata normal form. 6/296 useless extension candidates. Maximal degree in co-relation 1330. Up to 227 conditions per place. [2024-06-27 19:52:16,028 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 36 selfloop transitions, 4 changer transitions 20/62 dead transitions. [2024-06-27 19:52:16,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 62 transitions, 430 flow [2024-06-27 19:52:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-27 19:52:16,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-27 19:52:16,029 INFO L175 Difference]: Start difference. First operand has 102 places, 47 transitions, 278 flow. Second operand 12 states and 115 transitions. [2024-06-27 19:52:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 62 transitions, 430 flow [2024-06-27 19:52:16,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 62 transitions, 390 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:52:16,037 INFO L231 Difference]: Finished difference. Result has 93 places, 40 transitions, 217 flow [2024-06-27 19:52:16,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=217, PETRI_PLACES=93, PETRI_TRANSITIONS=40} [2024-06-27 19:52:16,037 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-27 19:52:16,037 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 40 transitions, 217 flow [2024-06-27 19:52:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:16,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:16,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 19:52:16,037 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 338517644, now seen corresponding path program 16 times [2024-06-27 19:52:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177979520] [2024-06-27 19:52:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:17,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:17,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177979520] [2024-06-27 19:52:17,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177979520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:17,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299692037] [2024-06-27 19:52:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:17,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:17,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:17,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:17,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 40 transitions, 217 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:17,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:17,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:17,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:17,997 INFO L124 PetriNetUnfolderBase]: 100/225 cut-off events. [2024-06-27 19:52:17,997 INFO L125 PetriNetUnfolderBase]: For 6996/6996 co-relation queries the response was YES. [2024-06-27 19:52:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 225 events. 100/225 cut-off events. For 6996/6996 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 781 event pairs, 32 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 908. Up to 131 conditions per place. [2024-06-27 19:52:17,998 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 28 selfloop transitions, 11 changer transitions 15/56 dead transitions. [2024-06-27 19:52:17,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 56 transitions, 359 flow [2024-06-27 19:52:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 19:52:17,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-27 19:52:17,998 INFO L175 Difference]: Start difference. First operand has 93 places, 40 transitions, 217 flow. Second operand 12 states and 119 transitions. [2024-06-27 19:52:17,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 56 transitions, 359 flow [2024-06-27 19:52:18,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 56 transitions, 337 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 19:52:18,003 INFO L231 Difference]: Finished difference. Result has 81 places, 34 transitions, 191 flow [2024-06-27 19:52:18,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=81, PETRI_TRANSITIONS=34} [2024-06-27 19:52:18,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-27 19:52:18,003 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 34 transitions, 191 flow [2024-06-27 19:52:18,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:18,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:18,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:18,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 19:52:18,003 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:18,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1204901236, now seen corresponding path program 17 times [2024-06-27 19:52:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890497890] [2024-06-27 19:52:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890497890] [2024-06-27 19:52:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890497890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135010775] [2024-06-27 19:52:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:20,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:20,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 34 transitions, 191 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:20,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:20,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:20,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:20,625 INFO L124 PetriNetUnfolderBase]: 89/200 cut-off events. [2024-06-27 19:52:20,625 INFO L125 PetriNetUnfolderBase]: For 4332/4332 co-relation queries the response was YES. [2024-06-27 19:52:20,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 200 events. 89/200 cut-off events. For 4332/4332 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 665 event pairs, 32 based on Foata normal form. 6/205 useless extension candidates. Maximal degree in co-relation 780. Up to 121 conditions per place. [2024-06-27 19:52:20,626 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 11 changer transitions 11/49 dead transitions. [2024-06-27 19:52:20,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 49 transitions, 317 flow [2024-06-27 19:52:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-27 19:52:20,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-27 19:52:20,627 INFO L175 Difference]: Start difference. First operand has 81 places, 34 transitions, 191 flow. Second operand 12 states and 115 transitions. [2024-06-27 19:52:20,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 49 transitions, 317 flow [2024-06-27 19:52:20,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 49 transitions, 285 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 19:52:20,630 INFO L231 Difference]: Finished difference. Result has 71 places, 31 transitions, 168 flow [2024-06-27 19:52:20,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=168, PETRI_PLACES=71, PETRI_TRANSITIONS=31} [2024-06-27 19:52:20,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-27 19:52:20,630 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 31 transitions, 168 flow [2024-06-27 19:52:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:20,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:20,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 19:52:20,630 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:20,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:20,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1416797384, now seen corresponding path program 18 times [2024-06-27 19:52:20,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:20,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314706410] [2024-06-27 19:52:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:22,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314706410] [2024-06-27 19:52:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314706410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980020248] [2024-06-27 19:52:22,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:22,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:22,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:22,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 31 transitions, 168 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:22,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:22,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:22,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:23,075 INFO L124 PetriNetUnfolderBase]: 79/182 cut-off events. [2024-06-27 19:52:23,076 INFO L125 PetriNetUnfolderBase]: For 2894/2894 co-relation queries the response was YES. [2024-06-27 19:52:23,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 182 events. 79/182 cut-off events. For 2894/2894 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 583 event pairs, 30 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 678. Up to 60 conditions per place. [2024-06-27 19:52:23,076 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 9 changer transitions 8/47 dead transitions. [2024-06-27 19:52:23,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 47 transitions, 330 flow [2024-06-27 19:52:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:52:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:52:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 19:52:23,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 19:52:23,077 INFO L175 Difference]: Start difference. First operand has 71 places, 31 transitions, 168 flow. Second operand 11 states and 110 transitions. [2024-06-27 19:52:23,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 47 transitions, 330 flow [2024-06-27 19:52:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 47 transitions, 296 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 19:52:23,079 INFO L231 Difference]: Finished difference. Result has 66 places, 27 transitions, 142 flow [2024-06-27 19:52:23,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=27} [2024-06-27 19:52:23,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-27 19:52:23,079 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 27 transitions, 142 flow [2024-06-27 19:52:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:23,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:23,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 19:52:23,079 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:23,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1405990486, now seen corresponding path program 19 times [2024-06-27 19:52:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461423098] [2024-06-27 19:52:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:24,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461423098] [2024-06-27 19:52:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461423098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:24,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:24,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:52:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332333550] [2024-06-27 19:52:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:24,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:52:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:52:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:52:24,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:24,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 27 transitions, 142 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:24,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:24,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:24,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:24,892 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-06-27 19:52:24,892 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-06-27 19:52:24,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 125 events. 52/125 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 311 event pairs, 17 based on Foata normal form. 6/130 useless extension candidates. Maximal degree in co-relation 418. Up to 60 conditions per place. [2024-06-27 19:52:24,892 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 6 changer transitions 15/41 dead transitions. [2024-06-27 19:52:24,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 41 transitions, 250 flow [2024-06-27 19:52:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:52:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:52:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 19:52:24,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 19:52:24,893 INFO L175 Difference]: Start difference. First operand has 66 places, 27 transitions, 142 flow. Second operand 12 states and 112 transitions. [2024-06-27 19:52:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 41 transitions, 250 flow [2024-06-27 19:52:24,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 41 transitions, 225 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:52:24,894 INFO L231 Difference]: Finished difference. Result has 62 places, 22 transitions, 106 flow [2024-06-27 19:52:24,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=106, PETRI_PLACES=62, PETRI_TRANSITIONS=22} [2024-06-27 19:52:24,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-27 19:52:24,894 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 22 transitions, 106 flow [2024-06-27 19:52:24,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:24,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:24,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:24,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 19:52:24,895 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:52:24,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1629675148, now seen corresponding path program 20 times [2024-06-27 19:52:24,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:24,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454389241] [2024-06-27 19:52:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:26,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454389241] [2024-06-27 19:52:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454389241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:26,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:52:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294949668] [2024-06-27 19:52:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:26,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:52:26,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:52:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:52:26,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 19:52:26,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 22 transitions, 106 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:26,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:26,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 19:52:26,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:26,552 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-27 19:52:26,552 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2024-06-27 19:52:26,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 70 events. 27/70 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 180. Up to 32 conditions per place. [2024-06-27 19:52:26,553 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-27 19:52:26,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 30 transitions, 152 flow [2024-06-27 19:52:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:52:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:52:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-27 19:52:26,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-27 19:52:26,553 INFO L175 Difference]: Start difference. First operand has 62 places, 22 transitions, 106 flow. Second operand 11 states and 95 transitions. [2024-06-27 19:52:26,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 30 transitions, 152 flow [2024-06-27 19:52:26,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 30 transitions, 122 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-27 19:52:26,554 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-27 19:52:26,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-27 19:52:26,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-27 19:52:26,554 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-27 19:52:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:26,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:52:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:52:26,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:52:26,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:52:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 19:52:26,578 INFO L445 BasicCegarLoop]: Path program histogram: [37, 33, 25, 20, 18, 17, 15, 10, 7, 6, 6, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:26,581 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:52:26,581 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:52:26,585 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:52:26,585 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:52:26,586 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:52:26 BasicIcfg [2024-06-27 19:52:26,586 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:52:26,587 INFO L158 Benchmark]: Toolchain (without parser) took 471187.46ms. Allocated memory was 146.8MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 66.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 945.5MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,588 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:52:26,589 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:52:26,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 623.84ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 65.9MB in the beginning and 141.3MB in the end (delta: -75.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.36ms. Allocated memory is still 195.0MB. Free memory was 141.3MB in the beginning and 138.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,590 INFO L158 Benchmark]: Boogie Preprocessor took 52.30ms. Allocated memory is still 195.0MB. Free memory was 138.2MB in the beginning and 135.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,590 INFO L158 Benchmark]: RCFGBuilder took 518.68ms. Allocated memory is still 195.0MB. Free memory was 135.1MB in the beginning and 78.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,590 INFO L158 Benchmark]: TraceAbstraction took 469916.41ms. Allocated memory was 195.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 78.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 907.8MB. Max. memory is 16.1GB. [2024-06-27 19:52:26,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 623.84ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 65.9MB in the beginning and 141.3MB in the end (delta: -75.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.36ms. Allocated memory is still 195.0MB. Free memory was 141.3MB in the beginning and 138.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.30ms. Allocated memory is still 195.0MB. Free memory was 138.2MB in the beginning and 135.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 518.68ms. Allocated memory is still 195.0MB. Free memory was 135.1MB in the beginning and 78.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 469916.41ms. Allocated memory was 195.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 78.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 907.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: 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, 50 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: 469.8s, OverallIterations: 225, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 208.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15857 SdHoareTripleChecker+Valid, 68.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13554 mSDsluCounter, 9571 SdHoareTripleChecker+Invalid, 59.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8625 mSDsCounter, 3953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113412 IncrementalHoareTripleChecker+Invalid, 117365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3953 mSolverCounterUnsat, 946 mSDtfsCounter, 113412 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2750 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 2731 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6373 ImplicationChecksByTransitivity, 81.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3803occurred in iteration=99, InterpolantAutomatonStates: 2331, 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: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 258.1s InterpolantComputationTime, 3743 NumberOfCodeBlocks, 3743 NumberOfCodeBlocksAsserted, 225 NumberOfCheckSat, 3518 ConstructedInterpolants, 0 QuantifiedInterpolants, 178409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 225 InterpolantComputations, 225 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! [2024-06-27 19:52:26,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE