./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_36-traces-ex-3_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_36-traces-ex-3_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/goblint-regression/13-privatized_36-traces-ex-3_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_36-traces-ex-3_true.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-59af5db-m [2024-02-02 09:17:47,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:17:47,610 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:17:47,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:17:47,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:17:47,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:17:47,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:17:47,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:17:47,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:17:47,646 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:17:47,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:17:47,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:17:47,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:17:47,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:17:47,649 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:17:47,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:17:47,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:17:47,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:17:47,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:17:47,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:17:47,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:17:47,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:17:47,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:17:47,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:17:47,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:17:47,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:17:47,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:17:47,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:17:47,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:17:47,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:17:47,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:17:47,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:17:47,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:47,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:17:47,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:17:47,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:17:47,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:17:47,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:17:47,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:17:47,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:17:47,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:17:47,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:17:47,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:17:47,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:17:47,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:17:47,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:17:47,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:17:47,939 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:17:47,939 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:17:47,940 INFO L431 ainManager$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/13-privatized_36-traces-ex-3_true.yml/witness.yml [2024-02-02 09:17:48,064 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:17:48,064 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:17:48,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_36-traces-ex-3_true.i [2024-02-02 09:17:49,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:17:49,374 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:17:49,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_36-traces-ex-3_true.i [2024-02-02 09:17:49,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede7b09e2/f9233a1bf4624e1fa61362f31712886b/FLAGbaa7acb08 [2024-02-02 09:17:49,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ede7b09e2/f9233a1bf4624e1fa61362f31712886b [2024-02-02 09:17:49,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:17:49,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:17:49,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:49,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:17:49,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:17:49,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:48" (1/2) ... [2024-02-02 09:17:49,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5434f378 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:49, skipping insertion in model container [2024-02-02 09:17:49,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:48" (1/2) ... [2024-02-02 09:17:49,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39e4c8a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:49, skipping insertion in model container [2024-02-02 09:17:49,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:49" (2/2) ... [2024-02-02 09:17:49,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5434f378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49, skipping insertion in model container [2024-02-02 09:17:49,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:49" (2/2) ... [2024-02-02 09:17:49,423 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:17:49,456 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:17:49,458 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (g == 2) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:49,458 INFO L101 nessWitnessExtractor]: Location invariant before [L689-L689] (g == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:49,458 INFO L101 nessWitnessExtractor]: Location invariant before [L19-L19] (g == 2) && (g == 2) [2024-02-02 09:17:49,458 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] g == 2 [2024-02-02 09:17:49,459 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (unsigned long )arg == 0UL [2024-02-02 09:17:49,459 INFO L101 nessWitnessExtractor]: Location invariant before [L688-L688] (g == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:49,460 INFO L101 nessWitnessExtractor]: Location invariant before [L686-L686] (g == 2) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:49,460 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L687] (g == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:49,460 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] g == 2 [2024-02-02 09:17:49,460 INFO L101 nessWitnessExtractor]: Location invariant before [L695-L695] g == 2 [2024-02-02 09:17:49,460 INFO L101 nessWitnessExtractor]: Location invariant before [L685-L685] (unsigned long )arg == 0UL [2024-02-02 09:17:49,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:17:49,680 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_36-traces-ex-3_true.i[1088,1101] [2024-02-02 09:17:49,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:49,802 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:17:49,822 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_36-traces-ex-3_true.i[1088,1101] [2024-02-02 09:17:49,823 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } 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 [2024-02-02 09:17:49,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:49,983 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:17:49,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49 WrapperNode [2024-02-02 09:17:49,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:49,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:49,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:17:49,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:17:49,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,073 INFO L138 Inliner]: procedures = 163, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-02-02 09:17:50,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:50,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:17:50,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:17:50,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:17:50,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,109 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 5, 5, 1]. 38 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-02-02 09:17:50,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:17:50,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:17:50,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:17:50,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:17:50,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (1/1) ... [2024-02-02 09:17:50,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:17:50,177 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) [2024-02-02 09:17:50,201 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 [2024-02-02 09:17:50,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:17:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:17:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:17:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:17:50,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:17:50,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:17:50,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:17:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 09:17:50,220 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 09:17:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:17:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:17:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:17:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:17:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:17:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:17:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:17:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:17:50,222 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:17:50,369 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:17:50,371 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:17:50,546 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:17:50,546 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:17:50,654 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:17:50,654 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:17:50,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:50 BoogieIcfgContainer [2024-02-02 09:17:50,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:17:50,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:17:50,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:17:50,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:17:50,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:48" (1/4) ... [2024-02-02 09:17:50,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e74d3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:17:50, skipping insertion in model container [2024-02-02 09:17:50,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:17:49" (2/4) ... [2024-02-02 09:17:50,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e74d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:50, skipping insertion in model container [2024-02-02 09:17:50,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:49" (3/4) ... [2024-02-02 09:17:50,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372e74d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:50, skipping insertion in model container [2024-02-02 09:17:50,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:50" (4/4) ... [2024-02-02 09:17:50,670 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_36-traces-ex-3_true.i [2024-02-02 09:17:50,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:17:50,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-02-02 09:17:50,684 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:17:50,741 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:17:50,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 96 flow [2024-02-02 09:17:50,797 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-02-02 09:17:50,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:50,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-02-02 09:17:50,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 96 flow [2024-02-02 09:17:50,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 93 flow [2024-02-02 09:17:50,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:17:50,817 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;@7e393ca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:17:50,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-02-02 09:17:50,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:17:50,824 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:17:50,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:50,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:17:50,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:50,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 7588, now seen corresponding path program 1 times [2024-02-02 09:17:50,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:50,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310553470] [2024-02-02 09:17:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:50,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310553470] [2024-02-02 09:17:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310553470] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:17:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959491676] [2024-02-02 09:17:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:17:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:17:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:17:51,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2024-02-02 09:17:51,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2024-02-02 09:17:51,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,261 INFO L124 PetriNetUnfolderBase]: 103/373 cut-off events. [2024-02-02 09:17:51,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:51,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 373 events. 103/373 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1997 event pairs, 53 based on Foata normal form. 31/383 useless extension candidates. Maximal degree in co-relation 625. Up to 155 conditions per place. [2024-02-02 09:17:51,269 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 30 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-02-02 09:17:51,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 181 flow [2024-02-02 09:17:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:17:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:17:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-02 09:17:51,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-02-02 09:17:51,285 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 93 flow. Second operand 3 states and 103 transitions. [2024-02-02 09:17:51,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 181 flow [2024-02-02 09:17:51,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:17:51,294 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 124 flow [2024-02-02 09:17:51,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-02-02 09:17:51,299 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-02-02 09:17:51,300 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 124 flow [2024-02-02 09:17:51,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:17:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:17:51,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:51,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash 226318473, now seen corresponding path program 1 times [2024-02-02 09:17:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063583174] [2024-02-02 09:17:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063583174] [2024-02-02 09:17:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063583174] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406526910] [2024-02-02 09:17:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:51,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-02-02 09:17:51,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-02-02 09:17:51,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,704 INFO L124 PetriNetUnfolderBase]: 79/359 cut-off events. [2024-02-02 09:17:51,705 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-02-02 09:17:51,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 359 events. 79/359 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2025 event pairs, 13 based on Foata normal form. 9/345 useless extension candidates. Maximal degree in co-relation 640. Up to 173 conditions per place. [2024-02-02 09:17:51,711 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 26 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-02-02 09:17:51,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 194 flow [2024-02-02 09:17:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-02-02 09:17:51,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-02-02 09:17:51,718 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 124 flow. Second operand 4 states and 125 transitions. [2024-02-02 09:17:51,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 194 flow [2024-02-02 09:17:51,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:51,729 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 114 flow [2024-02-02 09:17:51,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-02-02 09:17:51,730 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-02-02 09:17:51,730 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 114 flow [2024-02-02 09:17:51,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:51,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:17:51,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:51,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash -844781265, now seen corresponding path program 1 times [2024-02-02 09:17:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928961185] [2024-02-02 09:17:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928961185] [2024-02-02 09:17:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928961185] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:51,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:51,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:51,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93252804] [2024-02-02 09:17:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:51,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:51,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-02 09:17:51,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:51,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-02 09:17:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:51,942 INFO L124 PetriNetUnfolderBase]: 121/395 cut-off events. [2024-02-02 09:17:51,943 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-02-02 09:17:51,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 395 events. 121/395 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2046 event pairs, 17 based on Foata normal form. 10/388 useless extension candidates. Maximal degree in co-relation 782. Up to 122 conditions per place. [2024-02-02 09:17:51,946 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 40 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-02-02 09:17:51,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 242 flow [2024-02-02 09:17:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-02-02 09:17:51,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-02-02 09:17:51,948 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 114 flow. Second operand 4 states and 104 transitions. [2024-02-02 09:17:51,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 242 flow [2024-02-02 09:17:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:51,950 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 119 flow [2024-02-02 09:17:51,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-02-02 09:17:51,951 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-02-02 09:17:51,951 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 119 flow [2024-02-02 09:17:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:51,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:51,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:51,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:17:51,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:51,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -418415188, now seen corresponding path program 1 times [2024-02-02 09:17:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508854118] [2024-02-02 09:17:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:52,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508854118] [2024-02-02 09:17:52,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508854118] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:52,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:52,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035065185] [2024-02-02 09:17:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:52,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-02-02 09:17:52,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:52,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-02-02 09:17:52,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:52,137 INFO L124 PetriNetUnfolderBase]: 102/302 cut-off events. [2024-02-02 09:17:52,137 INFO L125 PetriNetUnfolderBase]: For 115/116 co-relation queries the response was YES. [2024-02-02 09:17:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 302 events. 102/302 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1319 event pairs, 13 based on Foata normal form. 40/337 useless extension candidates. Maximal degree in co-relation 648. Up to 122 conditions per place. [2024-02-02 09:17:52,139 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 29 selfloop transitions, 3 changer transitions 8/52 dead transitions. [2024-02-02 09:17:52,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 217 flow [2024-02-02 09:17:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-02-02 09:17:52,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592391304347826 [2024-02-02 09:17:52,140 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 119 flow. Second operand 4 states and 109 transitions. [2024-02-02 09:17:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 217 flow [2024-02-02 09:17:52,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:52,143 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 91 flow [2024-02-02 09:17:52,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-02-02 09:17:52,144 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2024-02-02 09:17:52,144 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 91 flow [2024-02-02 09:17:52,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:52,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:52,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:17:52,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:52,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:52,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1801555185, now seen corresponding path program 1 times [2024-02-02 09:17:52,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:52,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158147852] [2024-02-02 09:17:52,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:52,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:52,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158147852] [2024-02-02 09:17:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158147852] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:52,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826709419] [2024-02-02 09:17:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:52,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-02-02 09:17:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:52,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-02-02 09:17:52,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:52,350 INFO L124 PetriNetUnfolderBase]: 73/217 cut-off events. [2024-02-02 09:17:52,350 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-02-02 09:17:52,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 217 events. 73/217 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 852 event pairs, 33 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 466. Up to 74 conditions per place. [2024-02-02 09:17:52,352 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 27 selfloop transitions, 7 changer transitions 4/47 dead transitions. [2024-02-02 09:17:52,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 207 flow [2024-02-02 09:17:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:17:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:17:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-02-02 09:17:52,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-02-02 09:17:52,353 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 91 flow. Second operand 5 states and 130 transitions. [2024-02-02 09:17:52,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 207 flow [2024-02-02 09:17:52,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 197 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:52,355 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 101 flow [2024-02-02 09:17:52,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-02-02 09:17:52,356 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2024-02-02 09:17:52,356 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 101 flow [2024-02-02 09:17:52,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:52,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:17:52,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-02 09:17:52,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 295686859, now seen corresponding path program 1 times [2024-02-02 09:17:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117397475] [2024-02-02 09:17:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117397475] [2024-02-02 09:17:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117397475] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:52,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:17:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927056871] [2024-02-02 09:17:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:52,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:17:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:17:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:17:52,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 46 [2024-02-02 09:17:52,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:52,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 46 [2024-02-02 09:17:52,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:52,557 INFO L124 PetriNetUnfolderBase]: 24/106 cut-off events. [2024-02-02 09:17:52,557 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-02-02 09:17:52,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 106 events. 24/106 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 6 based on Foata normal form. 8/112 useless extension candidates. Maximal degree in co-relation 201. Up to 47 conditions per place. [2024-02-02 09:17:52,557 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-02-02 09:17:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 131 flow [2024-02-02 09:17:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-02-02 09:17:52,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7065217391304348 [2024-02-02 09:17:52,559 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 101 flow. Second operand 4 states and 130 transitions. [2024-02-02 09:17:52,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 131 flow [2024-02-02 09:17:52,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 109 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:52,560 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-02-02 09:17:52,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-02-02 09:17:52,561 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -12 predicate places. [2024-02-02 09:17:52,561 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-02-02 09:17:52,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 19 remaining) [2024-02-02 09:17:52,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 19 remaining) [2024-02-02 09:17:52,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2024-02-02 09:17:52,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 19 remaining) [2024-02-02 09:17:52,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 19 remaining) [2024-02-02 09:17:52,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 19 remaining) [2024-02-02 09:17:52,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 19 remaining) [2024-02-02 09:17:52,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 19 remaining) [2024-02-02 09:17:52,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 19 remaining) [2024-02-02 09:17:52,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 19 remaining) [2024-02-02 09:17:52,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 19 remaining) [2024-02-02 09:17:52,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 19 remaining) [2024-02-02 09:17:52,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 19 remaining) [2024-02-02 09:17:52,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 19 remaining) [2024-02-02 09:17:52,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 19 remaining) [2024-02-02 09:17:52,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 19 remaining) [2024-02-02 09:17:52,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 19 remaining) [2024-02-02 09:17:52,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 19 remaining) [2024-02-02 09:17:52,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 19 remaining) [2024-02-02 09:17:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:17:52,569 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-02 09:17:52,574 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:17:52,574 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:17:52,578 INFO L503 ceAbstractionStarter]: Automizer considered 10 witness invariants [2024-02-02 09:17:52,578 INFO L504 ceAbstractionStarter]: WitnessConsidered=10 [2024-02-02 09:17:52,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:17:52 BasicIcfg [2024-02-02 09:17:52,579 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:17:52,579 INFO L158 Benchmark]: Toolchain (without parser) took 3166.25ms. Allocated memory is still 209.7MB. Free memory was 136.2MB in the beginning and 141.8MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:52,579 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:52,580 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 209.7MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:52,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.28ms. Allocated memory is still 209.7MB. Free memory was 135.9MB in the beginning and 179.9MB in the end (delta: -43.9MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-02-02 09:17:52,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.21ms. Allocated memory is still 209.7MB. Free memory was 179.9MB in the beginning and 178.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-02 09:17:52,581 INFO L158 Benchmark]: Boogie Preprocessor took 67.25ms. Allocated memory is still 209.7MB. Free memory was 178.2MB in the beginning and 176.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:17:52,581 INFO L158 Benchmark]: RCFGBuilder took 511.74ms. Allocated memory is still 209.7MB. Free memory was 176.0MB in the beginning and 148.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-02 09:17:52,581 INFO L158 Benchmark]: TraceAbstraction took 1915.60ms. Allocated memory is still 209.7MB. Free memory was 148.9MB in the beginning and 141.8MB in the end (delta: 7.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-02-02 09:17:52,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 209.7MB. Free memory is still 183.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.28ms. Allocated memory is still 209.7MB. Free memory was 135.9MB in the beginning and 179.9MB in the end (delta: -43.9MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.21ms. Allocated memory is still 209.7MB. Free memory was 179.9MB in the beginning and 178.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.25ms. Allocated memory is still 209.7MB. Free memory was 178.2MB in the beginning and 176.0MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 511.74ms. Allocated memory is still 209.7MB. Free memory was 176.0MB in the beginning and 148.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1915.60ms. Allocated memory is still 209.7MB. Free memory was 148.9MB in the beginning and 141.8MB in the end (delta: 7.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 695]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 685]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 686]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 71 locations, 19 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: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 215 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 30 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=1, InterpolantAutomatonStates: 24, 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-02 09:17:52,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE