/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:41:39,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:41:39,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:41:39,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:41:39,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:41:39,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:41:39,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:41:39,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:41:39,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:41:39,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:41:39,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:41:39,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:41:39,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:41:39,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:41:39,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:41:39,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:41:39,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:41:39,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:41:39,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:41:39,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:41:39,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:41:39,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:41:39,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:41:39,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:41:39,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:41:39,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:41:39,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:41:39,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:41:39,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:41:39,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:41:39,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:41:39,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:41:39,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:41:39,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:41:39,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:41:39,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:41:39,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:41:39,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:41:39,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:41:39,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:41:39,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:41:39,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:41:39,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:41:39,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:41:39,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:41:39,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:41:39,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:41:39,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:41:39,469 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:41:39,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:41:39,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:41:39,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:41:39,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:41:39,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:41:39,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:41:39,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:41:39,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:41:39,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:41:39,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:41:39,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:41:39,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:41:39,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:41:39,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:41:39,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:41:39,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:41:39,479 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:41:39,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:41:39,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:41:39,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:41:39,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:41:39,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:41:39,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:41:39,815 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:41:39,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2022-12-06 16:41:40,763 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:41:41,076 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:41:41,077 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2022-12-06 16:41:41,091 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b77ec7d/f1ca4fd7b83945a48581f587b03b24e4/FLAGc4a46dd52 [2022-12-06 16:41:41,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b77ec7d/f1ca4fd7b83945a48581f587b03b24e4 [2022-12-06 16:41:41,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:41:41,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:41:41,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:41:41,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:41:41,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:41:41,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cfd02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41, skipping insertion in model container [2022-12-06 16:41:41,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:41:41,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:41:41,392 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2022-12-06 16:41:41,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:41:41,418 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:41:41,448 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2022-12-06 16:41:41,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:41,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:41,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:41:41,497 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:41:41,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41 WrapperNode [2022-12-06 16:41:41,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:41:41,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:41:41,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:41:41,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:41:41,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,534 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2022-12-06 16:41:41,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:41:41,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:41:41,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:41:41,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:41:41,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:41:41,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:41:41,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:41:41,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:41:41,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (1/1) ... [2022-12-06 16:41:41,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:41:41,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:41:41,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 16:41:41,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-12-06 16:41:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:41:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:41:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:41:41,667 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:41:41,746 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:41:41,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:41:41,863 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:41:41,880 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:41:41,881 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:41:41,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:41 BoogieIcfgContainer [2022-12-06 16:41:41,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:41:41,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:41:41,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:41:41,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:41:41,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:41:41" (1/3) ... [2022-12-06 16:41:41,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517db46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:41:41, skipping insertion in model container [2022-12-06 16:41:41,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:41" (2/3) ... [2022-12-06 16:41:41,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517db46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:41:41, skipping insertion in model container [2022-12-06 16:41:41,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:41" (3/3) ... [2022-12-06 16:41:41,887 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2022-12-06 16:41:41,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:41:41,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:41:41,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:41:41,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:41:42,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 211 flow [2022-12-06 16:41:42,077 INFO L130 PetriNetUnfolder]: 6/102 cut-off events. [2022-12-06 16:41:42,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:41:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-12-06 16:41:42,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 103 transitions, 211 flow [2022-12-06 16:41:42,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 207 flow [2022-12-06 16:41:42,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:41:42,105 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=LoopsAndPotentialCycles, 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;@12209915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:41:42,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-06 16:41:42,133 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-12-06 16:41:42,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:41:42,134 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:42,134 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:42,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1110512547, now seen corresponding path program 1 times [2022-12-06 16:41:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:42,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792901831] [2022-12-06 16:41:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:42,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792901831] [2022-12-06 16:41:42,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792901831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:42,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:42,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 16:41:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564491433] [2022-12-06 16:41:42,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 16:41:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 16:41:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 16:41:42,497 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 103 [2022-12-06 16:41:42,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:42,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:42,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 103 [2022-12-06 16:41:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:42,598 INFO L130 PetriNetUnfolder]: 24/312 cut-off events. [2022-12-06 16:41:42,599 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:41:42,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 312 events. 24/312 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1389 event pairs, 3 based on Foata normal form. 11/297 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2022-12-06 16:41:42,605 INFO L137 encePairwiseOnDemand]: 96/103 looper letters, 13 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2022-12-06 16:41:42,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 107 transitions, 253 flow [2022-12-06 16:41:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:41:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:41:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2022-12-06 16:41:42,619 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9223300970873787 [2022-12-06 16:41:42,623 INFO L294 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2022-12-06 16:41:42,623 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 107 transitions, 253 flow [2022-12-06 16:41:42,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:42,624 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:42,624 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:42,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:41:42,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1126540610, now seen corresponding path program 1 times [2022-12-06 16:41:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507395598] [2022-12-06 16:41:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:42,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507395598] [2022-12-06 16:41:42,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507395598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:42,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:42,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:41:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823866224] [2022-12-06 16:41:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:42,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:41:42,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:41:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:41:42,831 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 103 [2022-12-06 16:41:42,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 107 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:42,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:42,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 103 [2022-12-06 16:41:42,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:42,993 INFO L130 PetriNetUnfolder]: 52/518 cut-off events. [2022-12-06 16:41:42,993 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-06 16:41:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 518 events. 52/518 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3047 event pairs, 5 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 654. Up to 28 conditions per place. [2022-12-06 16:41:42,997 INFO L137 encePairwiseOnDemand]: 96/103 looper letters, 31 selfloop transitions, 10 changer transitions 3/135 dead transitions. [2022-12-06 16:41:42,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 427 flow [2022-12-06 16:41:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:41:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:41:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 905 transitions. [2022-12-06 16:41:43,000 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8786407766990292 [2022-12-06 16:41:43,001 INFO L294 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2022-12-06 16:41:43,001 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 135 transitions, 427 flow [2022-12-06 16:41:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,001 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:43,001 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:41:43,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1278984382, now seen corresponding path program 1 times [2022-12-06 16:41:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255575281] [2022-12-06 16:41:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:43,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:43,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255575281] [2022-12-06 16:41:43,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255575281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:43,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:43,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:41:43,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257303639] [2022-12-06 16:41:43,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:43,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:41:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:43,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:41:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:41:43,106 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 103 [2022-12-06 16:41:43,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:43,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 103 [2022-12-06 16:41:43,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:43,277 INFO L130 PetriNetUnfolder]: 140/1022 cut-off events. [2022-12-06 16:41:43,277 INFO L131 PetriNetUnfolder]: For 261/285 co-relation queries the response was YES. [2022-12-06 16:41:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 1022 events. 140/1022 cut-off events. For 261/285 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8286 event pairs, 5 based on Foata normal form. 10/968 useless extension candidates. Maximal degree in co-relation 1535. Up to 135 conditions per place. [2022-12-06 16:41:43,280 INFO L137 encePairwiseOnDemand]: 95/103 looper letters, 11 selfloop transitions, 6 changer transitions 76/174 dead transitions. [2022-12-06 16:41:43,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 174 transitions, 741 flow [2022-12-06 16:41:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:41:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:41:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 906 transitions. [2022-12-06 16:41:43,282 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8796116504854369 [2022-12-06 16:41:43,283 INFO L294 CegarLoopForPetriNet]: 100 programPoint places, 21 predicate places. [2022-12-06 16:41:43,283 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 174 transitions, 741 flow [2022-12-06 16:41:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,283 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:43,284 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:43,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:41:43,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1580332206, now seen corresponding path program 1 times [2022-12-06 16:41:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:43,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660395938] [2022-12-06 16:41:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:43,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:43,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660395938] [2022-12-06 16:41:43,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660395938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:43,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:43,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:41:43,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91308536] [2022-12-06 16:41:43,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:41:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:41:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:41:43,389 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 103 [2022-12-06 16:41:43,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 174 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:43,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 103 [2022-12-06 16:41:43,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:43,482 INFO L130 PetriNetUnfolder]: 118/804 cut-off events. [2022-12-06 16:41:43,482 INFO L131 PetriNetUnfolder]: For 500/512 co-relation queries the response was YES. [2022-12-06 16:41:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 804 events. 118/804 cut-off events. For 500/512 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5865 event pairs, 6 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 1348. Up to 104 conditions per place. [2022-12-06 16:41:43,484 INFO L137 encePairwiseOnDemand]: 98/103 looper letters, 14 selfloop transitions, 0 changer transitions 75/171 dead transitions. [2022-12-06 16:41:43,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 171 transitions, 795 flow [2022-12-06 16:41:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:41:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:41:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2022-12-06 16:41:43,486 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8754045307443366 [2022-12-06 16:41:43,487 INFO L294 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2022-12-06 16:41:43,487 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 171 transitions, 795 flow [2022-12-06 16:41:43,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,488 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:43,488 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:43,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:41:43,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 484044625, now seen corresponding path program 1 times [2022-12-06 16:41:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:43,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076514820] [2022-12-06 16:41:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:43,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:43,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076514820] [2022-12-06 16:41:43,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076514820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:43,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:43,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 16:41:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045143594] [2022-12-06 16:41:43,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:43,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 16:41:43,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 16:41:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 16:41:43,566 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 103 [2022-12-06 16:41:43,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 171 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:43,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 103 [2022-12-06 16:41:43,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:43,639 INFO L130 PetriNetUnfolder]: 116/779 cut-off events. [2022-12-06 16:41:43,639 INFO L131 PetriNetUnfolder]: For 1052/1114 co-relation queries the response was YES. [2022-12-06 16:41:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 779 events. 116/779 cut-off events. For 1052/1114 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5632 event pairs, 11 based on Foata normal form. 20/749 useless extension candidates. Maximal degree in co-relation 1419. Up to 109 conditions per place. [2022-12-06 16:41:43,641 INFO L137 encePairwiseOnDemand]: 100/103 looper letters, 8 selfloop transitions, 1 changer transitions 92/171 dead transitions. [2022-12-06 16:41:43,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 171 transitions, 899 flow [2022-12-06 16:41:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 16:41:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 16:41:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-12-06 16:41:43,642 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9150485436893204 [2022-12-06 16:41:43,643 INFO L294 CegarLoopForPetriNet]: 100 programPoint places, 29 predicate places. [2022-12-06 16:41:43,643 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 899 flow [2022-12-06 16:41:43,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:41:43,643 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:43,643 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:41:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:41:43,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:41:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 207041057, now seen corresponding path program 2 times [2022-12-06 16:41:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:43,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469518847] [2022-12-06 16:41:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 16:41:43,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 16:41:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 16:41:43,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 16:41:43,692 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 16:41:43,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-06 16:41:43,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-06 16:41:43,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:41:43,695 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-12-06 16:41:43,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:41:43,698 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:41:43,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:41:43 BasicIcfg [2022-12-06 16:41:43,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:41:43,730 INFO L158 Benchmark]: Toolchain (without parser) took 2619.78ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 146.7MB in the beginning and 169.0MB in the end (delta: -22.3MB). Peak memory consumption was 102.0MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,730 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory was 105.2MB in the beginning and 105.2MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:41:43,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.75ms. Allocated memory is still 172.0MB. Free memory was 146.4MB in the beginning and 124.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.47ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,731 INFO L158 Benchmark]: Boogie Preprocessor took 74.09ms. Allocated memory is still 172.0MB. Free memory was 122.7MB in the beginning and 149.8MB in the end (delta: -27.1MB). Peak memory consumption was 4.4MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,731 INFO L158 Benchmark]: RCFGBuilder took 272.48ms. Allocated memory is still 172.0MB. Free memory was 149.8MB in the beginning and 134.9MB in the end (delta: 14.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,731 INFO L158 Benchmark]: TraceAbstraction took 1845.95ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 134.4MB in the beginning and 169.0MB in the end (delta: -34.6MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2022-12-06 16:41:43,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 127.9MB. Free memory was 105.2MB in the beginning and 105.2MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 387.75ms. Allocated memory is still 172.0MB. Free memory was 146.4MB in the beginning and 124.8MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.47ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 122.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.09ms. Allocated memory is still 172.0MB. Free memory was 122.7MB in the beginning and 149.8MB in the end (delta: -27.1MB). Peak memory consumption was 4.4MB. Max. memory is 8.0GB. * RCFGBuilder took 272.48ms. Allocated memory is still 172.0MB. Free memory was 149.8MB in the beginning and 134.9MB in the end (delta: 14.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1845.95ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 134.4MB in the beginning and 169.0MB in the end (delta: -34.6MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L757] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L758] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L759] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L760] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() VAL [dec()=0, pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) VAL [\old(cond)=1, cond=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 VAL [lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] 0 return 0; VAL [\result=0, lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [arg={0:0}, arg={0:0}, BCSP_IoIncrement()=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 125 locations, 2 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: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 38 mSDtfsCounter, 168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=899occurred in iteration=5, InterpolantAutomatonStates: 35, 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, 0.6s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-12-06 16:41:43,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...