./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.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/chl-simpl-str-subst.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/chl-simpl-str-subst.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-subst.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-dev-3d25acf-m [2024-01-30 14:23:31,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:23:31,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:23:31,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:23:31,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:23:31,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:23:31,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:23:31,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:23:31,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:23:31,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:23:31,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:23:31,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:23:31,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:23:31,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:23:31,878 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:23:31,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:23:31,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:23:31,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:23:31,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:23:31,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:23:31,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:23:31,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:23:31,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:23:31,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:23:31,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:23:31,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:23:31,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:23:31,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:23:31,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:23:31,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:23:31,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:23:31,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:23:31,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:31,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:23:31,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:23:31,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:23:31,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:23:31,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:23:31,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:23:32,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:23:32,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:23:32,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:23:32,152 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:23:32,153 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:23:32,154 INFO L431 ainManager$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/chl-simpl-str-subst.wvr.yml/witness.yml [2024-01-30 14:23:32,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:23:32,236 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:23:32,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2024-01-30 14:23:33,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:23:33,377 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:23:33,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2024-01-30 14:23:33,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2c99328/dd1fdb8ce9844bb791af263c8a56c02c/FLAG3fffe557b [2024-01-30 14:23:33,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a2c99328/dd1fdb8ce9844bb791af263c8a56c02c [2024-01-30 14:23:33,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:23:33,393 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:23:33,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:33,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:23:33,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:23:33,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:32" (1/2) ... [2024-01-30 14:23:33,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d35ed3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:33, skipping insertion in model container [2024-01-30 14:23:33,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:32" (1/2) ... [2024-01-30 14:23:33,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cba6db8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:23:33, skipping insertion in model container [2024-01-30 14:23:33,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:33" (2/2) ... [2024-01-30 14:23:33,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d35ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33, skipping insertion in model container [2024-01-30 14:23:33,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:23:33" (2/2) ... [2024-01-30 14:23:33,400 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:23:33,417 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:23:33,418 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] (((((((to_int_1 == 0) && (length_2 == 0)) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,418 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] ((((((length_2 == 0) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,418 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((to_int_5 == 0) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,418 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (b <= -1) && (b != 0) [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((result_6 == 0) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L87-L87] (1 <= b) && (b != 0) [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (((to_int_5 == 0) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] ((((((((length_0 == 0) && (to_int_1 == 0)) && (length_2 == 0)) && (to_int_3 == 0)) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,419 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (((((to_int_3 == 0) && (length_4 == 0)) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,420 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((((length_4 == 0) && (to_int_5 == 0)) && (result_6 == 0)) && (result_7 == 0)) && (result_8 == 0) [2024-01-30 14:23:33,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:23:33,550 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/chl-simpl-str-subst.wvr.c[2614,2627] [2024-01-30 14:23:33,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:33,563 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:23:33,571 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry 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 [2024-01-30 14:23:33,614 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/chl-simpl-str-subst.wvr.c[2614,2627] Start Parsing Local Start Parsing Local [2024-01-30 14:23:33,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:23:33,633 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:23:33,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33 WrapperNode [2024-01-30 14:23:33,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:23:33,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:33,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:23:33,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:23:33,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,667 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2024-01-30 14:23:33,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:23:33,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:23:33,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:23:33,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:23:33,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,689 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]. [2024-01-30 14:23:33,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:23:33,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:23:33,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:23:33,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:23:33,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (1/1) ... [2024-01-30 14:23:33,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:23:33,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:23:33,730 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) [2024-01-30 14:23:33,744 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 [2024-01-30 14:23:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:23:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:23:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:23:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:23:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:23:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:23:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:23:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:23:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:23:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:23:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:23:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:23:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:23:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:23:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:23:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:23:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:23:33,792 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:23:33,895 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:23:33,897 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:23:34,152 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:23:34,152 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:23:34,356 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:23:34,356 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:23:34,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:34 BoogieIcfgContainer [2024-01-30 14:23:34,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:23:34,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:23:34,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:23:34,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:23:34,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:23:32" (1/4) ... [2024-01-30 14:23:34,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3764d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:23:34, skipping insertion in model container [2024-01-30 14:23:34,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:23:33" (2/4) ... [2024-01-30 14:23:34,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:23:34, skipping insertion in model container [2024-01-30 14:23:34,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:23:33" (3/4) ... [2024-01-30 14:23:34,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3764d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:23:34, skipping insertion in model container [2024-01-30 14:23:34,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:23:34" (4/4) ... [2024-01-30 14:23:34,368 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2024-01-30 14:23:34,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:23:34,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-01-30 14:23:34,381 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:23:34,458 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-30 14:23:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 163 flow [2024-01-30 14:23:34,529 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2024-01-30 14:23:34,529 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-30 14:23:34,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 6/68 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 157 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-30 14:23:34,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 71 transitions, 163 flow [2024-01-30 14:23:34,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 152 flow [2024-01-30 14:23:34,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:23:34,555 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;@fc44fef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:23:34,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-01-30 14:23:34,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:23:34,558 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:23:34,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:23:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:23:34,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:34,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 17658, now seen corresponding path program 1 times [2024-01-30 14:23:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:34,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299092263] [2024-01-30 14:23:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:34,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299092263] [2024-01-30 14:23:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299092263] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:34,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189291287] [2024-01-30 14:23:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:34,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:34,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2024-01-30 14:23:34,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:34,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:34,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2024-01-30 14:23:34,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:35,392 INFO L124 PetriNetUnfolderBase]: 3281/5193 cut-off events. [2024-01-30 14:23:35,392 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-01-30 14:23:35,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9850 conditions, 5193 events. 3281/5193 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 32388 event pairs, 2653 based on Foata normal form. 0/4240 useless extension candidates. Maximal degree in co-relation 8903. Up to 4433 conditions per place. [2024-01-30 14:23:35,435 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 48 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-01-30 14:23:35,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 250 flow [2024-01-30 14:23:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-01-30 14:23:35,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070422535211268 [2024-01-30 14:23:35,452 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 152 flow. Second operand 3 states and 108 transitions. [2024-01-30 14:23:35,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 250 flow [2024-01-30 14:23:35,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 238 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:23:35,464 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 142 flow [2024-01-30 14:23:35,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-01-30 14:23:35,468 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2024-01-30 14:23:35,468 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 142 flow [2024-01-30 14:23:35,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:35,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:35,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:23:35,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:23:35,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:35,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:35,470 INFO L85 PathProgramCache]: Analyzing trace with hash 547995, now seen corresponding path program 1 times [2024-01-30 14:23:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:35,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495509089] [2024-01-30 14:23:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:35,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:35,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:35,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495509089] [2024-01-30 14:23:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495509089] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357103221] [2024-01-30 14:23:35,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:35,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:35,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:35,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:35,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-01-30 14:23:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-01-30 14:23:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:35,893 INFO L124 PetriNetUnfolderBase]: 2514/4006 cut-off events. [2024-01-30 14:23:35,894 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-01-30 14:23:35,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 4006 events. 2514/4006 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 25838 event pairs, 2027 based on Foata normal form. 0/3461 useless extension candidates. Maximal degree in co-relation 7509. Up to 3449 conditions per place. [2024-01-30 14:23:35,937 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 45 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-01-30 14:23:35,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 234 flow [2024-01-30 14:23:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-01-30 14:23:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352112676056338 [2024-01-30 14:23:35,940 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 142 flow. Second operand 3 states and 114 transitions. [2024-01-30 14:23:35,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 234 flow [2024-01-30 14:23:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:35,943 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 140 flow [2024-01-30 14:23:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-01-30 14:23:35,944 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2024-01-30 14:23:35,944 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 140 flow [2024-01-30 14:23:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:35,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:35,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:23:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:23:35,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:35,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash 16988402, now seen corresponding path program 1 times [2024-01-30 14:23:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728661872] [2024-01-30 14:23:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728661872] [2024-01-30 14:23:36,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728661872] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:36,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:36,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112454102] [2024-01-30 14:23:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:36,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:36,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-01-30 14:23:36,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:36,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-01-30 14:23:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:36,269 INFO L124 PetriNetUnfolderBase]: 2514/4005 cut-off events. [2024-01-30 14:23:36,269 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-01-30 14:23:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 4005 events. 2514/4005 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 25776 event pairs, 2027 based on Foata normal form. 0/3461 useless extension candidates. Maximal degree in co-relation 7505. Up to 3447 conditions per place. [2024-01-30 14:23:36,291 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-01-30 14:23:36,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 230 flow [2024-01-30 14:23:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-30 14:23:36,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446009389671361 [2024-01-30 14:23:36,295 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 140 flow. Second operand 3 states and 116 transitions. [2024-01-30 14:23:36,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 230 flow [2024-01-30 14:23:36,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:36,298 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 138 flow [2024-01-30 14:23:36,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-01-30 14:23:36,299 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2024-01-30 14:23:36,299 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 138 flow [2024-01-30 14:23:36,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:36,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:23:36,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:23:36,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:36,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:36,300 INFO L85 PathProgramCache]: Analyzing trace with hash 526641033, now seen corresponding path program 1 times [2024-01-30 14:23:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874786897] [2024-01-30 14:23:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874786897] [2024-01-30 14:23:36,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874786897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:36,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:36,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:36,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239421398] [2024-01-30 14:23:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:36,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2024-01-30 14:23:36,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:36,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2024-01-30 14:23:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:36,591 INFO L124 PetriNetUnfolderBase]: 2161/3504 cut-off events. [2024-01-30 14:23:36,592 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-30 14:23:36,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 3504 events. 2161/3504 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23170 event pairs, 1782 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 6612. Up to 3056 conditions per place. [2024-01-30 14:23:36,610 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 42 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-01-30 14:23:36,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 224 flow [2024-01-30 14:23:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-30 14:23:36,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633802816901409 [2024-01-30 14:23:36,612 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 138 flow. Second operand 3 states and 120 transitions. [2024-01-30 14:23:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 224 flow [2024-01-30 14:23:36,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:36,615 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 136 flow [2024-01-30 14:23:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-01-30 14:23:36,616 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2024-01-30 14:23:36,616 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 136 flow [2024-01-30 14:23:36,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:36,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:23:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:23:36,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:36,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash -853996580, now seen corresponding path program 1 times [2024-01-30 14:23:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058830144] [2024-01-30 14:23:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058830144] [2024-01-30 14:23:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058830144] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584998200] [2024-01-30 14:23:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:36,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:36,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2024-01-30 14:23:36,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2024-01-30 14:23:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:36,924 INFO L124 PetriNetUnfolderBase]: 2161/3503 cut-off events. [2024-01-30 14:23:36,924 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-30 14:23:36,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 3503 events. 2161/3503 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23117 event pairs, 1782 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 6608. Up to 3054 conditions per place. [2024-01-30 14:23:36,938 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 41 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-30 14:23:36,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 220 flow [2024-01-30 14:23:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-01-30 14:23:36,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432 [2024-01-30 14:23:36,940 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 136 flow. Second operand 3 states and 122 transitions. [2024-01-30 14:23:36,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 220 flow [2024-01-30 14:23:36,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:36,941 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2024-01-30 14:23:36,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-01-30 14:23:36,943 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2024-01-30 14:23:36,943 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2024-01-30 14:23:36,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:36,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:36,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:36,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:23:36,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:36,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash -704089664, now seen corresponding path program 1 times [2024-01-30 14:23:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:36,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974615745] [2024-01-30 14:23:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974615745] [2024-01-30 14:23:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974615745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933170434] [2024-01-30 14:23:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:37,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 71 [2024-01-30 14:23:37,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:37,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:37,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 71 [2024-01-30 14:23:37,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:37,181 INFO L124 PetriNetUnfolderBase]: 2161/3502 cut-off events. [2024-01-30 14:23:37,181 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-01-30 14:23:37,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 3502 events. 2161/3502 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 23131 event pairs, 1782 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 6604. Up to 3052 conditions per place. [2024-01-30 14:23:37,195 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 40 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-30 14:23:37,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 216 flow [2024-01-30 14:23:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-01-30 14:23:37,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821596244131455 [2024-01-30 14:23:37,196 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 3 states and 124 transitions. [2024-01-30 14:23:37,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 216 flow [2024-01-30 14:23:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:37,197 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2024-01-30 14:23:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-01-30 14:23:37,198 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2024-01-30 14:23:37,198 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2024-01-30 14:23:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:37,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:37,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:23:37,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:37,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash -351942509, now seen corresponding path program 1 times [2024-01-30 14:23:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575373289] [2024-01-30 14:23:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:23:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:23:37,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:23:37,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575373289] [2024-01-30 14:23:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575373289] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:23:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:23:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:23:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450882990] [2024-01-30 14:23:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:23:37,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:23:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:23:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:23:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:23:37,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 71 [2024-01-30 14:23:37,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:23:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 71 [2024-01-30 14:23:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:23:37,430 INFO L124 PetriNetUnfolderBase]: 2157/3518 cut-off events. [2024-01-30 14:23:37,431 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-30 14:23:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 3518 events. 2157/3518 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 23801 event pairs, 712 based on Foata normal form. 0/3082 useless extension candidates. Maximal degree in co-relation 6617. Up to 2003 conditions per place. [2024-01-30 14:23:37,446 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 60 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-01-30 14:23:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 306 flow [2024-01-30 14:23:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:23:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:23:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-01-30 14:23:37,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6995305164319249 [2024-01-30 14:23:37,448 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 3 states and 149 transitions. [2024-01-30 14:23:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 306 flow [2024-01-30 14:23:37,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:23:37,451 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 150 flow [2024-01-30 14:23:37,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-01-30 14:23:37,452 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2024-01-30 14:23:37,452 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 150 flow [2024-01-30 14:23:37,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:23:37,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:23:37,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:37,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:23:37,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 26 more)] === [2024-01-30 14:23:37,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:23:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1733425579, now seen corresponding path program 1 times [2024-01-30 14:23:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:23:37,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688525094] [2024-01-30 14:23:37,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:23:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:23:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:23:37,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:23:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:23:37,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:23:37,503 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:23:37,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 29 remaining) [2024-01-30 14:23:37,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 29 remaining) [2024-01-30 14:23:37,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 29 remaining) [2024-01-30 14:23:37,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 29 remaining) [2024-01-30 14:23:37,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 29 remaining) [2024-01-30 14:23:37,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 29 remaining) [2024-01-30 14:23:37,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (11 of 29 remaining) [2024-01-30 14:23:37,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 29 remaining) [2024-01-30 14:23:37,509 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 29 remaining) [2024-01-30 14:23:37,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 29 remaining) [2024-01-30 14:23:37,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 29 remaining) [2024-01-30 14:23:37,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 29 remaining) [2024-01-30 14:23:37,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 29 remaining) [2024-01-30 14:23:37,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 29 remaining) [2024-01-30 14:23:37,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 29 remaining) [2024-01-30 14:23:37,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 29 remaining) [2024-01-30 14:23:37,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 29 remaining) [2024-01-30 14:23:37,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 29 remaining) [2024-01-30 14:23:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:23:37,518 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:23:37,524 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:23:37,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:23:37,554 INFO L503 ceAbstractionStarter]: Automizer considered 16 witness invariants [2024-01-30 14:23:37,554 INFO L504 ceAbstractionStarter]: WitnessConsidered=16 [2024-01-30 14:23:37,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:23:37 BasicIcfg [2024-01-30 14:23:37,555 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:23:37,556 INFO L158 Benchmark]: Toolchain (without parser) took 4163.46ms. Allocated memory was 130.0MB in the beginning and 396.4MB in the end (delta: 266.3MB). Free memory was 104.1MB in the beginning and 212.8MB in the end (delta: -108.7MB). Peak memory consumption was 157.6MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,557 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:23:37,557 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:23:37,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.94ms. Allocated memory is still 130.0MB. Free memory was 104.0MB in the beginning and 88.8MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.13ms. Allocated memory is still 130.0MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,559 INFO L158 Benchmark]: Boogie Preprocessor took 33.58ms. Allocated memory is still 130.0MB. Free memory was 86.7MB in the beginning and 84.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,559 INFO L158 Benchmark]: RCFGBuilder took 655.58ms. Allocated memory is still 130.0MB. Free memory was 83.5MB in the beginning and 95.3MB in the end (delta: -11.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,561 INFO L158 Benchmark]: TraceAbstraction took 3195.82ms. Allocated memory was 130.0MB in the beginning and 396.4MB in the end (delta: 266.3MB). Free memory was 94.4MB in the beginning and 212.8MB in the end (delta: -118.3MB). Peak memory consumption was 148.6MB. Max. memory is 16.1GB. [2024-01-30 14:23:37,562 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 0.14ms. Allocated memory is still 130.0MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.94ms. Allocated memory is still 130.0MB. Free memory was 104.0MB in the beginning and 88.8MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.13ms. Allocated memory is still 130.0MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.58ms. Allocated memory is still 130.0MB. Free memory was 86.7MB in the beginning and 84.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 655.58ms. Allocated memory is still 130.0MB. Free memory was 83.5MB in the beginning and 95.3MB in the end (delta: -11.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3195.82ms. Allocated memory was 130.0MB in the beginning and 396.4MB in the end (delta: 266.3MB). Free memory was 94.4MB in the beginning and 212.8MB in the end (delta: -118.3MB). Peak memory consumption was 148.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 87]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, length_4, to_int_5, result_6, result_7, result_8; [L61] 0 pthread_t t1, t2, t3; VAL [length_0=0, length_2=0, length_4=0, result_6=0, result_7=0, result_8=0, t1={5:0}, t2={6:0}, t3={3:0}, to_int_1=0, to_int_3=0, to_int_5=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_0],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L64] 0 length_0 = __VERIFIER_nondet_int() [L65] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L65] 0 to_int_1 = __VERIFIER_nondet_int() [L66] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L66] 0 length_2 = __VERIFIER_nondet_int() [L67] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L67] 0 to_int_3 = __VERIFIER_nondet_int() [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_4],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L68] 0 length_4 = __VERIFIER_nondet_int() [L69] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_5],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L69] 0 to_int_5 = __VERIFIER_nondet_int() [L72] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[result_6],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_7],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_8],IntegerLiteral[0]]]]] [L72] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, t1={5:0}, t2={6:0}, t3={3:0}, to_int_1=-2, to_int_3=0, to_int_5=0] [L43] 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : minus(to_int_1, to_int_3)) VAL [_argptr={0:0}, _argptr={0:0}, length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, to_int_1=-2, to_int_3=0, to_int_5=0] [L43] 1 length_2 == 0 ? -1 : minus(to_int_1, to_int_3) [L43] CALL 1 minus(to_int_1, to_int_3) [L87] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[b]],BinaryExpression[COMPNEQ,IdentifierExpression[b],IntegerLiteral[0]]]]] VAL [\old(a)=-2, \old(b)=0, a=-2, b=0, length_0=1, length_2=1, length_4=0, result_6=0, result_7=0, result_8=0, to_int_1=-2, to_int_3=0, to_int_5=0] - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 73]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 29 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: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 617 IncrementalHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 25 mSDtfsCounter, 617 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-30 14:23:37,593 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE