./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-simple-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/weaver/parallel-simple-equiv.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-simple-equiv.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:09:40,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:09:40,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:09:40,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:09:40,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:09:40,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:09:40,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:09:40,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:09:40,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:09:40,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:09:40,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:09:40,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:09:40,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:09:40,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:09:40,730 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:09:40,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:09:40,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:09:40,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:09:40,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:09:40,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:09:40,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:09:40,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:09:40,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:09:40,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:09:40,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:09:40,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:09:40,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:09:40,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:09:40,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:09:40,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:09:40,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:09:40,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:09:40,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:09:40,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:09:40,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:09:40,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:09:40,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:09:40,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:09:40,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:09:40,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:09:40,738 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:09:40,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:09:40,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:09:40,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:09:40,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:09:41,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:09:41,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:09:41,013 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:09:41,014 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:09:41,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-simple-equiv.wvr.yml/witness.yml [2024-01-31 16:09:41,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:09:41,126 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:09:41,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2024-01-31 16:09:42,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:09:42,394 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:09:42,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2024-01-31 16:09:42,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b9a8618/5a8b863cd9c2459981a3d64878310f2c/FLAG92e0eedd5 [2024-01-31 16:09:42,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b9a8618/5a8b863cd9c2459981a3d64878310f2c [2024-01-31 16:09:42,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:09:42,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:09:42,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:09:42,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:09:42,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:09:42,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:41" (1/2) ... [2024-01-31 16:09:42,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296a9d8f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:09:42, skipping insertion in model container [2024-01-31 16:09:42,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:41" (1/2) ... [2024-01-31 16:09:42,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c2c1d9b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:09:42, skipping insertion in model container [2024-01-31 16:09:42,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:09:42" (2/2) ... [2024-01-31 16:09:42,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296a9d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42, skipping insertion in model container [2024-01-31 16:09:42,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:09:42" (2/2) ... [2024-01-31 16:09:42,435 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:09:42,457 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] temp_2 == 0U [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] (x_1 == 0U) && (temp_2 == 0U) [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,461 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,462 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,462 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,462 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,462 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (((((((0LL - (long long )x_0) + (long long )x_1 >= 0LL) && ((long long )x_0 + (long long )x_1 >= 0LL)) && ((0LL - (long long )x_0) - (long long )x_1 >= 0LL)) && ((long long )x_0 - (long long )x_1 >= 0LL)) && (x_0 == 0U)) && (x_1 == 0U)) && (temp_2 == 0U) [2024-01-31 16:09:42,462 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,463 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,463 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,463 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,463 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,463 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-31 16:09:42,482 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:09:42,618 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2251,2264] [2024-01-31 16:09:42,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:09:42,629 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:09:42,677 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2251,2264] [2024-01-31 16:09:42,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:09:42,718 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:09:42,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42 WrapperNode [2024-01-31 16:09:42,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:09:42,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:09:42,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:09:42,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:09:42,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,789 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2024-01-31 16:09:42,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:09:42,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:09:42,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:09:42,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:09:42,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,830 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:09:42,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:09:42,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:09:42,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:09:42,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:09:42,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (1/1) ... [2024-01-31 16:09:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:09:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:09:42,905 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) [2024-01-31 16:09:42,928 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 [2024-01-31 16:09:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:09:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:09:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:09:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:09:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:09:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:09:42,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:09:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:09:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:09:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:09:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:09:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:09:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:09:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:09:42,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:09:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:09:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:09:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:09:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:09:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:09:42,958 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:09:43,087 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:09:43,089 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:09:43,352 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:09:43,352 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:09:43,492 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:09:43,497 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:09:43,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:09:43 BoogieIcfgContainer [2024-01-31 16:09:43,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:09:43,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:09:43,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:09:43,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:09:43,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:09:41" (1/4) ... [2024-01-31 16:09:43,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364519b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:09:43, skipping insertion in model container [2024-01-31 16:09:43,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:09:42" (2/4) ... [2024-01-31 16:09:43,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364519b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:09:43, skipping insertion in model container [2024-01-31 16:09:43,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:09:42" (3/4) ... [2024-01-31 16:09:43,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6364519b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:09:43, skipping insertion in model container [2024-01-31 16:09:43,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:09:43" (4/4) ... [2024-01-31 16:09:43,505 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2024-01-31 16:09:43,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:09:43,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-01-31 16:09:43,522 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:09:43,607 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:09:43,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 51 transitions, 123 flow [2024-01-31 16:09:43,693 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-01-31 16:09:43,693 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:09:43,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 97 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:09:43,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 51 transitions, 123 flow [2024-01-31 16:09:43,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 47 transitions, 112 flow [2024-01-31 16:09:43,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:09:43,720 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;@17637ab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:09:43,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-01-31 16:09:43,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:09:43,724 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:09:43,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:09:43,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:43,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:09:43,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:43,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash 8854, now seen corresponding path program 1 times [2024-01-31 16:09:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631514429] [2024-01-31 16:09:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631514429] [2024-01-31 16:09:44,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631514429] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:44,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:44,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:09:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194294531] [2024-01-31 16:09:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:44,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-01-31 16:09:44,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-01-31 16:09:44,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:44,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-01-31 16:09:44,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:44,396 INFO L124 PetriNetUnfolderBase]: 493/933 cut-off events. [2024-01-31 16:09:44,396 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-01-31 16:09:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 933 events. 493/933 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5525 event pairs, 493 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 1455. Up to 793 conditions per place. [2024-01-31 16:09:44,411 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 27 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-01-31 16:09:44,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 164 flow [2024-01-31 16:09:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-01-31 16:09:44,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620915032679739 [2024-01-31 16:09:44,427 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 112 flow. Second operand 3 states and 86 transitions. [2024-01-31 16:09:44,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 164 flow [2024-01-31 16:09:44,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 152 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:09:44,439 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 98 flow [2024-01-31 16:09:44,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-01-31 16:09:44,445 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-01-31 16:09:44,445 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 98 flow [2024-01-31 16:09:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2024-01-31 16:09:44,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:44,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:09:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:09:44,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:44,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash 274771, now seen corresponding path program 1 times [2024-01-31 16:09:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700573760] [2024-01-31 16:09:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700573760] [2024-01-31 16:09:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700573760] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:44,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:09:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51921423] [2024-01-31 16:09:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:44,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:44,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:44,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:44,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2024-01-31 16:09:44,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:44,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:44,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2024-01-31 16:09:44,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:44,704 INFO L124 PetriNetUnfolderBase]: 493/932 cut-off events. [2024-01-31 16:09:44,705 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-31 16:09:44,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 932 events. 493/932 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5509 event pairs, 493 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 1741. Up to 791 conditions per place. [2024-01-31 16:09:44,714 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 26 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-01-31 16:09:44,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 152 flow [2024-01-31 16:09:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-01-31 16:09:44,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620915032679739 [2024-01-31 16:09:44,717 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 98 flow. Second operand 3 states and 86 transitions. [2024-01-31 16:09:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 152 flow [2024-01-31 16:09:44,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:44,719 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 96 flow [2024-01-31 16:09:44,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-01-31 16:09:44,720 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2024-01-31 16:09:44,720 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 96 flow [2024-01-31 16:09:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:44,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:44,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:09:44,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:09:44,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:44,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash 8518172, now seen corresponding path program 1 times [2024-01-31 16:09:44,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:44,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206732294] [2024-01-31 16:09:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:44,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206732294] [2024-01-31 16:09:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206732294] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:44,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:44,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:09:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464609383] [2024-01-31 16:09:44,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:44,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:09:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:09:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:09:44,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-01-31 16:09:44,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:44,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:44,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-01-31 16:09:44,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:44,878 INFO L124 PetriNetUnfolderBase]: 493/931 cut-off events. [2024-01-31 16:09:44,879 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-31 16:09:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 931 events. 493/931 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5503 event pairs, 493 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 1737. Up to 789 conditions per place. [2024-01-31 16:09:44,886 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 25 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-01-31 16:09:44,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 148 flow [2024-01-31 16:09:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:09:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:09:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-01-31 16:09:44,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751633986928104 [2024-01-31 16:09:44,888 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 96 flow. Second operand 3 states and 88 transitions. [2024-01-31 16:09:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 148 flow [2024-01-31 16:09:44,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:44,890 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 94 flow [2024-01-31 16:09:44,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-01-31 16:09:44,891 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2024-01-31 16:09:44,891 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 94 flow [2024-01-31 16:09:44,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:44,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:44,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:09:44,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:44,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 362126200, now seen corresponding path program 1 times [2024-01-31 16:09:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744028016] [2024-01-31 16:09:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:44,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744028016] [2024-01-31 16:09:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744028016] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040524066] [2024-01-31 16:09:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:45,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-01-31 16:09:45,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:45,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:45,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-01-31 16:09:45,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:45,134 INFO L124 PetriNetUnfolderBase]: 493/887 cut-off events. [2024-01-31 16:09:45,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:09:45,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 887 events. 493/887 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5081 event pairs, 59 based on Foata normal form. 58/871 useless extension candidates. Maximal degree in co-relation 1691. Up to 670 conditions per place. [2024-01-31 16:09:45,139 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 38 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-01-31 16:09:45,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 196 flow [2024-01-31 16:09:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:09:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:09:45,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-31 16:09:45,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-01-31 16:09:45,146 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 94 flow. Second operand 4 states and 115 transitions. [2024-01-31 16:09:45,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 196 flow [2024-01-31 16:09:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:45,147 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 88 flow [2024-01-31 16:09:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-01-31 16:09:45,149 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2024-01-31 16:09:45,149 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 88 flow [2024-01-31 16:09:45,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:45,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:45,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:45,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:09:45,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash 109621665, now seen corresponding path program 1 times [2024-01-31 16:09:45,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140036571] [2024-01-31 16:09:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:45,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140036571] [2024-01-31 16:09:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140036571] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024120075] [2024-01-31 16:09:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:45,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:45,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2024-01-31 16:09:45,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-01-31 16:09:45,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:45,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2024-01-31 16:09:45,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:45,432 INFO L124 PetriNetUnfolderBase]: 377/757 cut-off events. [2024-01-31 16:09:45,432 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-01-31 16:09:45,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 757 events. 377/757 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4025 event pairs, 117 based on Foata normal form. 54/807 useless extension candidates. Maximal degree in co-relation 1378. Up to 498 conditions per place. [2024-01-31 16:09:45,436 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 38 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-01-31 16:09:45,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 192 flow [2024-01-31 16:09:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:09:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:09:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-31 16:09:45,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-01-31 16:09:45,439 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 88 flow. Second operand 4 states and 115 transitions. [2024-01-31 16:09:45,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 192 flow [2024-01-31 16:09:45,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:45,441 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 83 flow [2024-01-31 16:09:45,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-01-31 16:09:45,443 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -13 predicate places. [2024-01-31 16:09:45,443 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 83 flow [2024-01-31 16:09:45,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-01-31 16:09:45,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:45,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:45,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:09:45,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:45,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2028388211, now seen corresponding path program 1 times [2024-01-31 16:09:45,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:45,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336804990] [2024-01-31 16:09:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:45,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336804990] [2024-01-31 16:09:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336804990] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:09:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034306787] [2024-01-31 16:09:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:09:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:09:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:09:45,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-01-31 16:09:45,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:45,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:45,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-01-31 16:09:45,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:45,666 INFO L124 PetriNetUnfolderBase]: 318/537 cut-off events. [2024-01-31 16:09:45,666 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-31 16:09:45,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 537 events. 318/537 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2378 event pairs, 20 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 1073. Up to 428 conditions per place. [2024-01-31 16:09:45,669 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-01-31 16:09:45,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 179 flow [2024-01-31 16:09:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:09:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:09:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-01-31 16:09:45,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-31 16:09:45,671 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 83 flow. Second operand 4 states and 104 transitions. [2024-01-31 16:09:45,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 179 flow [2024-01-31 16:09:45,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:45,673 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 74 flow [2024-01-31 16:09:45,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-01-31 16:09:45,676 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -17 predicate places. [2024-01-31 16:09:45,676 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 74 flow [2024-01-31 16:09:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:45,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:45,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:09:45,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:45,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash -70717073, now seen corresponding path program 1 times [2024-01-31 16:09:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:45,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589582515] [2024-01-31 16:09:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589582515] [2024-01-31 16:09:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589582515] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:46,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:09:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270892548] [2024-01-31 16:09:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:09:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:09:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:09:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:46,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:46,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:46,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:46,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:46,537 INFO L124 PetriNetUnfolderBase]: 439/746 cut-off events. [2024-01-31 16:09:46,537 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-01-31 16:09:46,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 746 events. 439/746 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3316 event pairs, 19 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 1498. Up to 313 conditions per place. [2024-01-31 16:09:46,541 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 15 changer transitions 30/105 dead transitions. [2024-01-31 16:09:46,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 105 transitions, 441 flow [2024-01-31 16:09:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:09:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:09:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:09:46,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-01-31 16:09:46,543 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 74 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:09:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 105 transitions, 441 flow [2024-01-31 16:09:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 105 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:09:46,545 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 151 flow [2024-01-31 16:09:46,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-01-31 16:09:46,546 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-01-31 16:09:46,547 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 151 flow [2024-01-31 16:09:46,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:46,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:46,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:46,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:09:46,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:46,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash -243025435, now seen corresponding path program 2 times [2024-01-31 16:09:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:46,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241754798] [2024-01-31 16:09:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:46,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:46,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241754798] [2024-01-31 16:09:46,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241754798] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:46,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:46,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:09:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571815330] [2024-01-31 16:09:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:09:46,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:09:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:09:46,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:46,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:46,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:46,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:47,170 INFO L124 PetriNetUnfolderBase]: 481/845 cut-off events. [2024-01-31 16:09:47,170 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-01-31 16:09:47,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 845 events. 481/845 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4022 event pairs, 98 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 2156. Up to 346 conditions per place. [2024-01-31 16:09:47,175 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 62 selfloop transitions, 24 changer transitions 19/111 dead transitions. [2024-01-31 16:09:47,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 111 transitions, 566 flow [2024-01-31 16:09:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:09:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:09:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:09:47,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-01-31 16:09:47,177 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 151 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:09:47,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 111 transitions, 566 flow [2024-01-31 16:09:47,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 552 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-31 16:09:47,182 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 265 flow [2024-01-31 16:09:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-01-31 16:09:47,182 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2024-01-31 16:09:47,183 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 265 flow [2024-01-31 16:09:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:09:47,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:47,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2025142291, now seen corresponding path program 3 times [2024-01-31 16:09:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879127200] [2024-01-31 16:09:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:47,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879127200] [2024-01-31 16:09:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879127200] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:09:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756820907] [2024-01-31 16:09:47,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:09:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:09:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:09:47,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:47,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:47,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:47,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:47,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:47,856 INFO L124 PetriNetUnfolderBase]: 485/869 cut-off events. [2024-01-31 16:09:47,857 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2024-01-31 16:09:47,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 869 events. 485/869 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4304 event pairs, 32 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 2588. Up to 259 conditions per place. [2024-01-31 16:09:47,861 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 41 selfloop transitions, 17 changer transitions 45/109 dead transitions. [2024-01-31 16:09:47,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 665 flow [2024-01-31 16:09:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:09:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:09:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-01-31 16:09:47,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-01-31 16:09:47,863 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 265 flow. Second operand 9 states and 282 transitions. [2024-01-31 16:09:47,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 665 flow [2024-01-31 16:09:47,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 609 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-01-31 16:09:47,869 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 230 flow [2024-01-31 16:09:47,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2024-01-31 16:09:47,870 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-01-31 16:09:47,870 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 230 flow [2024-01-31 16:09:47,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:47,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:47,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:47,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:09:47,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:47,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1386298541, now seen corresponding path program 4 times [2024-01-31 16:09:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754605572] [2024-01-31 16:09:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754605572] [2024-01-31 16:09:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754605572] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:48,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:09:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981812821] [2024-01-31 16:09:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:48,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:09:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:09:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:09:48,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:48,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:48,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:48,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:48,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:48,443 INFO L124 PetriNetUnfolderBase]: 269/501 cut-off events. [2024-01-31 16:09:48,444 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-01-31 16:09:48,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 501 events. 269/501 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2162 event pairs, 44 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 1437. Up to 171 conditions per place. [2024-01-31 16:09:48,447 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 41 selfloop transitions, 15 changer transitions 26/88 dead transitions. [2024-01-31 16:09:48,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 517 flow [2024-01-31 16:09:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:09:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:09:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 291 transitions. [2024-01-31 16:09:48,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705882352941176 [2024-01-31 16:09:48,448 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 230 flow. Second operand 10 states and 291 transitions. [2024-01-31 16:09:48,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 517 flow [2024-01-31 16:09:48,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 458 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-01-31 16:09:48,452 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 187 flow [2024-01-31 16:09:48,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2024-01-31 16:09:48,453 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-01-31 16:09:48,453 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 187 flow [2024-01-31 16:09:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:48,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:48,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:48,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:09:48,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:48,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1905787959, now seen corresponding path program 5 times [2024-01-31 16:09:48,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:48,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388442561] [2024-01-31 16:09:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:48,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388442561] [2024-01-31 16:09:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388442561] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:48,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:48,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:09:48,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108879324] [2024-01-31 16:09:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:48,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:09:48,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:09:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:09:48,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:48,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:48,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:48,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:48,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:48,961 INFO L124 PetriNetUnfolderBase]: 169/326 cut-off events. [2024-01-31 16:09:48,961 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-01-31 16:09:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 326 events. 169/326 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1195 event pairs, 46 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 897. Up to 126 conditions per place. [2024-01-31 16:09:48,963 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 24 selfloop transitions, 6 changer transitions 37/73 dead transitions. [2024-01-31 16:09:48,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 396 flow [2024-01-31 16:09:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:09:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:09:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-01-31 16:09:48,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 16:09:48,965 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 187 flow. Second operand 9 states and 255 transitions. [2024-01-31 16:09:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 396 flow [2024-01-31 16:09:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 338 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-01-31 16:09:48,967 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 112 flow [2024-01-31 16:09:48,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2024-01-31 16:09:48,968 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2024-01-31 16:09:48,968 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 112 flow [2024-01-31 16:09:48,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:48,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:48,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:48,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:09:48,969 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:09:48,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 60146091, now seen corresponding path program 6 times [2024-01-31 16:09:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:48,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658535138] [2024-01-31 16:09:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:49,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658535138] [2024-01-31 16:09:49,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658535138] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:49,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:49,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:09:49,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940024835] [2024-01-31 16:09:49,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:49,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:09:49,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:49,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:09:49,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:09:49,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-31 16:09:49,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:49,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:49,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-31 16:09:49,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:49,378 INFO L124 PetriNetUnfolderBase]: 69/143 cut-off events. [2024-01-31 16:09:49,378 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-31 16:09:49,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 143 events. 69/143 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 377 event pairs, 8 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 319. Up to 82 conditions per place. [2024-01-31 16:09:49,378 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2024-01-31 16:09:49,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 199 flow [2024-01-31 16:09:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:09:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:09:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-01-31 16:09:49,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154061624649859 [2024-01-31 16:09:49,380 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 112 flow. Second operand 7 states and 184 transitions. [2024-01-31 16:09:49,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 199 flow [2024-01-31 16:09:49,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:09:49,381 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-01-31 16:09:49,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-01-31 16:09:49,382 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2024-01-31 16:09:49,382 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-01-31 16:09:49,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:09:49,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 33 remaining) [2024-01-31 16:09:49,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (16 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 33 remaining) [2024-01-31 16:09:49,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-01-31 16:09:49,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-01-31 16:09:49,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-01-31 16:09:49,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-01-31 16:09:49,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-01-31 16:09:49,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 33 remaining) [2024-01-31 16:09:49,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 33 remaining) [2024-01-31 16:09:49,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:09:49,388 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:49,394 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:09:49,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:09:49,397 INFO L503 ceAbstractionStarter]: Automizer considered 16 witness invariants [2024-01-31 16:09:49,397 INFO L504 ceAbstractionStarter]: WitnessConsidered=16 [2024-01-31 16:09:49,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:09:49 BasicIcfg [2024-01-31 16:09:49,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:09:49,399 INFO L158 Benchmark]: Toolchain (without parser) took 6975.31ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 118.5MB in the beginning and 222.7MB in the end (delta: -104.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,399 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:49,399 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:49,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.14ms. Allocated memory is still 188.7MB. Free memory was 118.5MB in the beginning and 161.6MB in the end (delta: -43.1MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.86ms. Allocated memory is still 188.7MB. Free memory was 161.6MB in the beginning and 160.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,400 INFO L158 Benchmark]: Boogie Preprocessor took 64.63ms. Allocated memory is still 188.7MB. Free memory was 160.4MB in the beginning and 157.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,400 INFO L158 Benchmark]: RCFGBuilder took 641.68ms. Allocated memory is still 188.7MB. Free memory was 157.7MB in the beginning and 126.9MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,400 INFO L158 Benchmark]: TraceAbstraction took 5898.99ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 126.2MB in the beginning and 222.7MB in the end (delta: -96.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:49,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 188.7MB. Free memory is still 164.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.14ms. Allocated memory is still 188.7MB. Free memory was 118.5MB in the beginning and 161.6MB in the end (delta: -43.1MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.86ms. Allocated memory is still 188.7MB. Free memory was 161.6MB in the beginning and 160.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.63ms. Allocated memory is still 188.7MB. Free memory was 160.4MB in the beginning and 157.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.68ms. Allocated memory is still 188.7MB. Free memory was 157.7MB in the beginning and 126.9MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5898.99ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 126.2MB in the beginning and 222.7MB in the end (delta: -96.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 42]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 43]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 44]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 48]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 50]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 51]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 55]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 56]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 57]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 58]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 60]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 67]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 68]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 69]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 82]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 85 locations, 33 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: 5.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 502 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2436 IncrementalHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 17 mSDtfsCounter, 2436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=8, InterpolantAutomatonStates: 74, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 2491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:09:49,433 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