./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec.i --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/03_incdec.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/03_incdec.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec.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-?-80b1b13-m [2024-01-31 16:41:51,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:41:51,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:41:51,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:41:51,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:41:51,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:41:51,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:41:51,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:41:51,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:41:51,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:41:51,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:41:51,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:41:51,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:41:51,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:41:51,526 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:41:51,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:41:51,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:41:51,530 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:41:51,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:41:51,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:41:51,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:41:51,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:41:51,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:41:51,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:41:51,533 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:41:51,533 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:41:51,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:41:51,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:41:51,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:41:51,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:41:51,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:41:51,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:41:51,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:51,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:41:51,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:41:51,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:41:51,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:41:51,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:41:51,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:41:51,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:41:51,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:41:51,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:41:51,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:41:51,843 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:41:51,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-01-31 16:41:52,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:41:53,140 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:41:53,141 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-01-31 16:41:53,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dea29718/5765156e8cb94405bb808b78fd6958fe/FLAG7bfc6b0cf [2024-01-31 16:41:53,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dea29718/5765156e8cb94405bb808b78fd6958fe [2024-01-31 16:41:53,167 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:41:53,168 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:41:53,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec.yml/witness.yml [2024-01-31 16:41:53,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:41:53,254 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:41:53,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:53,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:41:53,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:41:53,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:53" (1/2) ... [2024-01-31 16:41:53,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc53a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:53, skipping insertion in model container [2024-01-31 16:41:53,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:53" (1/2) ... [2024-01-31 16:41:53,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61cda201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:53, skipping insertion in model container [2024-01-31 16:41:53,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:53" (2/2) ... [2024-01-31 16:41:53,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc53a82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53, skipping insertion in model container [2024-01-31 16:41:53,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:53" (2/2) ... [2024-01-31 16:41:53,266 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:41:53,306 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:41:53,307 INFO L98 nessWitnessExtractor]: Location invariant after [L731-L731] (unsigned long )arg == 0UL [2024-01-31 16:41:53,351 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:41:53,615 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2024-01-31 16:41:53,623 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2024-01-31 16:41:53,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:53,638 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:41:53,662 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2024-01-31 16:41:53,665 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2024-01-31 16:41:53,665 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:53,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:53,706 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:41:53,707 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53 WrapperNode [2024-01-31 16:41:53,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:53,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:53,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:41:53,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:41:53,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,769 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2024-01-31 16:41:53,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:53,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:41:53,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:41:53,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:41:53,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,802 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-01-31 16:41:53,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:41:53,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:41:53,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:41:53,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:41:53,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (1/1) ... [2024-01-31 16:41:53,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:53,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:41:53,872 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 16:41:53,878 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 16:41:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:41:53,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:41:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:41:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:41:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:41:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:41:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:41:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:41:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:41:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:41:53,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:41:53,940 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 16:41:54,065 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:41:54,067 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:41:54,295 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:41:54,296 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:41:54,372 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:41:54,373 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 16:41:54,373 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:54 BoogieIcfgContainer [2024-01-31 16:41:54,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:41:54,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:41:54,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:41:54,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:41:54,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:41:53" (1/4) ... [2024-01-31 16:41:54,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5066a064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:41:54, skipping insertion in model container [2024-01-31 16:41:54,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:53" (2/4) ... [2024-01-31 16:41:54,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5066a064 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:54, skipping insertion in model container [2024-01-31 16:41:54,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:53" (3/4) ... [2024-01-31 16:41:54,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5066a064 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:54, skipping insertion in model container [2024-01-31 16:41:54,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:54" (4/4) ... [2024-01-31 16:41:54,380 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-01-31 16:41:54,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:41:54,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:41:54,395 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:41:54,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 38 transitions, 80 flow [2024-01-31 16:41:54,467 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-01-31 16:41:54,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:41:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 5/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-01-31 16:41:54,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 38 transitions, 80 flow [2024-01-31 16:41:54,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 38 transitions, 80 flow [2024-01-31 16:41:54,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:54,485 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;@6e9997f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:54,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:41:54,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:54,490 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-01-31 16:41:54,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:41:54,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:54,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:41:54,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:41:54,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 409445595, now seen corresponding path program 1 times [2024-01-31 16:41:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:54,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418968588] [2024-01-31 16:41:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:54,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:41:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:54,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:41:54,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:41:54,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-31 16:41:54,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-31 16:41:54,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-31 16:41:54,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-01-31 16:41:54,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-31 16:41:54,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:41:54,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:41:54,638 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:41:54,641 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:41:54,679 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:54,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 71 transitions, 152 flow [2024-01-31 16:41:54,693 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-01-31 16:41:54,694 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:41:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 76 events. 10/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 270 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2024-01-31 16:41:54,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 152 flow [2024-01-31 16:41:54,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 71 transitions, 152 flow [2024-01-31 16:41:54,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:54,699 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;@6e9997f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:54,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:41:54,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:54,707 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-01-31 16:41:54,707 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:41:54,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:54,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:41:54,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:54,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1182717211, now seen corresponding path program 1 times [2024-01-31 16:41:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536456034] [2024-01-31 16:41:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:54,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:41:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:54,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:41:54,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:41:54,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-01-31 16:41:54,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-01-31 16:41:54,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-31 16:41:54,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-01-31 16:41:54,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-01-31 16:41:54,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-31 16:41:54,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-31 16:41:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:41:54,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:41:54,779 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:41:54,782 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:41:54,829 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 104 transitions, 226 flow [2024-01-31 16:41:54,849 INFO L124 PetriNetUnfolderBase]: 15/112 cut-off events. [2024-01-31 16:41:54,850 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:41:54,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 15/112 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 462 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2024-01-31 16:41:54,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 104 transitions, 226 flow [2024-01-31 16:41:54,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 104 transitions, 226 flow [2024-01-31 16:41:54,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:54,855 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;@6e9997f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:54,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-01-31 16:41:54,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:54,865 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-01-31 16:41:54,865 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:41:54,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:54,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:54,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:41:54,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1997911843, now seen corresponding path program 1 times [2024-01-31 16:41:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935988500] [2024-01-31 16:41:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:55,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935988500] [2024-01-31 16:41:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935988500] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:55,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:55,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:41:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209663314] [2024-01-31 16:41:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:55,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 104 [2024-01-31 16:41:55,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 16:41:55,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 104 [2024-01-31 16:41:55,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:42:00,442 INFO L124 PetriNetUnfolderBase]: 46468/75536 cut-off events. [2024-01-31 16:42:00,442 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-01-31 16:42:00,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139413 conditions, 75536 events. 46468/75536 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 3384. Compared 672133 event pairs, 16804 based on Foata normal form. 5679/73462 useless extension candidates. Maximal degree in co-relation 27493. Up to 54715 conditions per place. [2024-01-31 16:42:00,851 INFO L140 encePairwiseOnDemand]: 87/104 looper letters, 90 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-01-31 16:42:00,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 474 flow [2024-01-31 16:42:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:42:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:42:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-01-31 16:42:00,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-01-31 16:42:00,864 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 226 flow. Second operand 3 states and 210 transitions. [2024-01-31 16:42:00,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 474 flow [2024-01-31 16:42:00,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 128 transitions, 470 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:42:00,874 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 246 flow [2024-01-31 16:42:00,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2024-01-31 16:42:00,878 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-01-31 16:42:00,878 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 246 flow [2024-01-31 16:42:00,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 16:42:00,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:00,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:42:00,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:42:00,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1079870369, now seen corresponding path program 1 times [2024-01-31 16:42:00,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:00,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187190764] [2024-01-31 16:42:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:00,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:42:01,010 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 16:42:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:42:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187190764] [2024-01-31 16:42:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187190764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:42:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:42:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:42:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57705452] [2024-01-31 16:42:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:42:01,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:42:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:42:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:42:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:42:01,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 104 [2024-01-31 16:42:01,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 16:42:01,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:42:01,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 104 [2024-01-31 16:42:01,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:42:06,087 INFO L124 PetriNetUnfolderBase]: 58125/92951 cut-off events. [2024-01-31 16:42:06,087 INFO L125 PetriNetUnfolderBase]: For 4875/4875 co-relation queries the response was YES. [2024-01-31 16:42:06,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180944 conditions, 92951 events. 58125/92951 cut-off events. For 4875/4875 co-relation queries the response was YES. Maximal size of possible extension queue 3913. Compared 816740 event pairs, 17991 based on Foata normal form. 1359/86011 useless extension candidates. Maximal degree in co-relation 96392. Up to 54704 conditions per place. [2024-01-31 16:42:06,636 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 139 selfloop transitions, 8 changer transitions 0/177 dead transitions. [2024-01-31 16:42:06,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 726 flow [2024-01-31 16:42:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:42:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:42:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-01-31 16:42:06,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6490384615384616 [2024-01-31 16:42:06,639 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 246 flow. Second operand 4 states and 270 transitions. [2024-01-31 16:42:06,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 726 flow [2024-01-31 16:42:06,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 177 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:42:06,656 INFO L231 Difference]: Finished difference. Result has 101 places, 103 transitions, 285 flow [2024-01-31 16:42:06,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=101, PETRI_TRANSITIONS=103} [2024-01-31 16:42:06,658 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-01-31 16:42:06,658 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 103 transitions, 285 flow [2024-01-31 16:42:06,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 16:42:06,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:06,659 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:42:06,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:42:06,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-01-31 16:42:06,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash 59182490, now seen corresponding path program 1 times [2024-01-31 16:42:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:06,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127748637] [2024-01-31 16:42:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:06,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:06,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:06,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:06,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-01-31 16:42:06,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-01-31 16:42:06,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-01-31 16:42:06,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-01-31 16:42:06,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-01-31 16:42:06,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2024-01-31 16:42:06,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-01-31 16:42:06,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-01-31 16:42:06,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-01-31 16:42:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:42:06,702 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-31 16:42:06,703 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:06,703 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:42:06,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 137 transitions, 302 flow [2024-01-31 16:42:06,784 INFO L124 PetriNetUnfolderBase]: 20/148 cut-off events. [2024-01-31 16:42:06,785 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:42:06,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 148 events. 20/148 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 640 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 131. Up to 5 conditions per place. [2024-01-31 16:42:06,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 137 transitions, 302 flow [2024-01-31 16:42:06,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 137 transitions, 302 flow [2024-01-31 16:42:06,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:06,788 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;@6e9997f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:06,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-31 16:42:06,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:06,793 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2024-01-31 16:42:06,793 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-31 16:42:06,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:06,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:06,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-01-31 16:42:06,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2104256486, now seen corresponding path program 1 times [2024-01-31 16:42:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:06,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984975897] [2024-01-31 16:42:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:06,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:42:06,833 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 16:42:06,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:42:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984975897] [2024-01-31 16:42:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984975897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:42:06,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:42:06,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:42:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724251811] [2024-01-31 16:42:06,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:42:06,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:42:06,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:42:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:42:06,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:42:06,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 137 [2024-01-31 16:42:06,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 16:42:06,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:42:06,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 137 [2024-01-31 16:42:06,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand