/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:13:38,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:13:38,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:13:38,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:13:38,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:13:38,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:13:38,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:13:38,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:13:38,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:13:38,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:13:38,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:13:38,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:13:38,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:13:38,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:13:38,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:13:38,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:13:38,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:13:38,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:13:38,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:13:38,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:13:38,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:13:38,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:13:38,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:13:38,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:13:38,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:13:38,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:13:38,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:13:38,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:13:38,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:13:38,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:13:38,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:13:38,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:13:38,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:13:38,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:13:38,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:13:38,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:13:38,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:13:38,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:13:38,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:13:38,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:13:38,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:13:38,350 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 [2022-12-11 19:13:38,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:13:38,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:13:38,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:13:38,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:13:38,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:13:38,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:13:38,377 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:13:38,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:13:38,377 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:13:38,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:13:38,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:13:38,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:13:38,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:13:38,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:13:38,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:13:38,380 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:13:38,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:13:38,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:13:38,380 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:13:38,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:13:38,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:13:38,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:13:38,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:13:38,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:13:38,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:13:38,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2022-12-11 19:13:39,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:13:39,893 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:13:39,893 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2022-12-11 19:13:39,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/921b80bae/6dcc743c05914080b20419f277fd5789/FLAG3cf0f2bd2 [2022-12-11 19:13:39,918 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/921b80bae/6dcc743c05914080b20419f277fd5789 [2022-12-11 19:13:39,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:13:39,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:13:39,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:13:39,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:13:39,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:13:39,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:13:39" (1/1) ... [2022-12-11 19:13:39,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7676ae97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:39, skipping insertion in model container [2022-12-11 19:13:39,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:13:39" (1/1) ... [2022-12-11 19:13:39,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:13:39,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:13:40,172 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-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-12-11 19:13:40,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:13:40,383 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:13:40,392 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-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-12-11 19:13:40,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:13:40,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:13:40,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:13:40,489 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:13:40,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40 WrapperNode [2022-12-11 19:13:40,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:13:40,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:13:40,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:13:40,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:13:40,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,541 INFO L138 Inliner]: procedures = 365, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-12-11 19:13:40,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:13:40,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:13:40,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:13:40,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:13:40,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:13:40,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:13:40,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:13:40,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:13:40,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (1/1) ... [2022-12-11 19:13:40,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:13:40,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:40,601 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) [2022-12-11 19:13:40,612 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 [2022-12-11 19:13:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:13:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2022-12-11 19:13:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:13:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:13:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:13:40,632 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:13:40,714 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:13:40,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:13:40,816 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:13:40,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:13:40,820 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 19:13:40,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:13:40 BoogieIcfgContainer [2022-12-11 19:13:40,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:13:40,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:13:40,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:13:40,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:13:40,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:13:39" (1/3) ... [2022-12-11 19:13:40,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f74249d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:13:40, skipping insertion in model container [2022-12-11 19:13:40,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:13:40" (2/3) ... [2022-12-11 19:13:40,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f74249d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:13:40, skipping insertion in model container [2022-12-11 19:13:40,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:13:40" (3/3) ... [2022-12-11 19:13:40,827 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2022-12-11 19:13:40,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:13:40,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:13:40,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:13:40,877 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-11 19:13:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2022-12-11 19:13:40,933 INFO L130 PetriNetUnfolder]: 7/84 cut-off events. [2022-12-11 19:13:40,934 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 19:13:40,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-11 19:13:40,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 85 transitions, 178 flow [2022-12-11 19:13:40,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 74 transitions, 154 flow [2022-12-11 19:13:40,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:13:40,968 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;@15bae3c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:13:40,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-11 19:13:40,984 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2022-12-11 19:13:40,984 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 19:13:40,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:40,985 INFO L214 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] [2022-12-11 19:13:40,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1103797050, now seen corresponding path program 1 times [2022-12-11 19:13:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745041412] [2022-12-11 19:13:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:13:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:41,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745041412] [2022-12-11 19:13:41,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745041412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:13:41,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:13:41,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:13:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376493349] [2022-12-11 19:13:41,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:13:41,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:13:41,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:13:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:13:41,227 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2022-12-11 19:13:41,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-12-11 19:13:41,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:41,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2022-12-11 19:13:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:41,289 INFO L130 PetriNetUnfolder]: 2/75 cut-off events. [2022-12-11 19:13:41,290 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 19:13:41,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 75 events. 2/75 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 16/88 useless extension candidates. Maximal degree in co-relation 51. Up to 9 conditions per place. [2022-12-11 19:13:41,291 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 9 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-11 19:13:41,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 170 flow [2022-12-11 19:13:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:13:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:13:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2022-12-11 19:13:41,307 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8862745098039215 [2022-12-11 19:13:41,308 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 154 flow. Second operand 3 states and 226 transitions. [2022-12-11 19:13:41,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 170 flow [2022-12-11 19:13:41,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:13:41,317 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 150 flow [2022-12-11 19:13:41,318 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2022-12-11 19:13:41,323 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2022-12-11 19:13:41,323 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 150 flow [2022-12-11 19:13:41,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2022-12-11 19:13:41,324 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:41,324 INFO L214 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] [2022-12-11 19:13:41,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:13:41,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:41,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash -565338637, now seen corresponding path program 1 times [2022-12-11 19:13:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012228279] [2022-12-11 19:13:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:13:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012228279] [2022-12-11 19:13:41,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012228279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:41,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796498285] [2022-12-11 19:13:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:41,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:41,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:41,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:41,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:13:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:41,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-11 19:13:41,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:13:41,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 19:13:41,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796498285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:13:41,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 19:13:41,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-11 19:13:41,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642059871] [2022-12-11 19:13:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:13:41,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:13:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:41,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:13:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:13:41,678 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 19:13:41,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-12-11 19:13:41,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:41,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 19:13:41,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:41,699 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2022-12-11 19:13:41,699 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 19:13:41,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 79 events. 2/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 64. Up to 10 conditions per place. [2022-12-11 19:13:41,700 INFO L137 encePairwiseOnDemand]: 82/85 looper letters, 10 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-12-11 19:13:41,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 180 flow [2022-12-11 19:13:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:13:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:13:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-12-11 19:13:41,702 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8509803921568627 [2022-12-11 19:13:41,702 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 150 flow. Second operand 3 states and 217 transitions. [2022-12-11 19:13:41,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 180 flow [2022-12-11 19:13:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:13:41,704 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 160 flow [2022-12-11 19:13:41,704 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2022-12-11 19:13:41,704 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2022-12-11 19:13:41,704 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 160 flow [2022-12-11 19:13:41,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-12-11 19:13:41,705 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:41,705 INFO L214 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] [2022-12-11 19:13:41,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 19:13:41,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:41,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1346512584, now seen corresponding path program 1 times [2022-12-11 19:13:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:41,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558777216] [2022-12-11 19:13:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:13:42,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:42,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558777216] [2022-12-11 19:13:42,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558777216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:42,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462043162] [2022-12-11 19:13:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:42,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:42,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:42,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:13:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:42,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 19:13:42,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:13:42,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:13:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:13:42,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462043162] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:13:42,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:13:42,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 19:13:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884062945] [2022-12-11 19:13:42,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:13:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:13:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:42,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:13:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:13:42,176 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-11 19:13:42,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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) [2022-12-11 19:13:42,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:42,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-11 19:13:42,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:42,232 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2022-12-11 19:13:42,232 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 19:13:42,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 86 events. 2/86 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 2/87 useless extension candidates. Maximal degree in co-relation 84. Up to 8 conditions per place. [2022-12-11 19:13:42,233 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 10 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2022-12-11 19:13:42,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 216 flow [2022-12-11 19:13:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:13:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:13:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 624 transitions. [2022-12-11 19:13:42,236 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8156862745098039 [2022-12-11 19:13:42,236 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 160 flow. Second operand 9 states and 624 transitions. [2022-12-11 19:13:42,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 216 flow [2022-12-11 19:13:42,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:13:42,238 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 208 flow [2022-12-11 19:13:42,238 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2022-12-11 19:13:42,238 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2022-12-11 19:13:42,239 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 208 flow [2022-12-11 19:13:42,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.0) internal successors, (690), 10 states have internal predecessors, (690), 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) [2022-12-11 19:13:42,239 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:42,239 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:13:42,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 19:13:42,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-11 19:13:42,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:42,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1437663650, now seen corresponding path program 2 times [2022-12-11 19:13:42,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:42,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753225454] [2022-12-11 19:13:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:42,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-11 19:13:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753225454] [2022-12-11 19:13:42,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753225454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50578039] [2022-12-11 19:13:42,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:13:42,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:42,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:42,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 19:13:42,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:13:42,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:13:42,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 19:13:42,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-11 19:13:42,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:13:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-11 19:13:42,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50578039] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:13:42,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:13:42,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 19:13:42,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899440970] [2022-12-11 19:13:42,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:13:42,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 19:13:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:42,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 19:13:42,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 19:13:42,660 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 19:13:42,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 69.9) internal successors, (699), 10 states have internal predecessors, (699), 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) [2022-12-11 19:13:42,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:42,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 19:13:42,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:42,709 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2022-12-11 19:13:42,709 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 19:13:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 96 events. 2/96 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 2/97 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2022-12-11 19:13:42,710 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 9 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2022-12-11 19:13:42,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 262 flow [2022-12-11 19:13:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:13:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:13:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 632 transitions. [2022-12-11 19:13:42,712 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8261437908496732 [2022-12-11 19:13:42,712 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 208 flow. Second operand 9 states and 632 transitions. [2022-12-11 19:13:42,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 262 flow [2022-12-11 19:13:42,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 256 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-11 19:13:42,714 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 252 flow [2022-12-11 19:13:42,714 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2022-12-11 19:13:42,715 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2022-12-11 19:13:42,715 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 252 flow [2022-12-11 19:13:42,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.9) internal successors, (699), 10 states have internal predecessors, (699), 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) [2022-12-11 19:13:42,716 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:42,716 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:13:42,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 19:13:42,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:42,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1468200822, now seen corresponding path program 3 times [2022-12-11 19:13:42,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:42,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646511589] [2022-12-11 19:13:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-11 19:13:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:43,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646511589] [2022-12-11 19:13:43,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646511589] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:43,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611381072] [2022-12-11 19:13:43,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 19:13:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:43,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:43,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 19:13:43,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-11 19:13:43,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:13:43,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 19:13:43,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-11 19:13:43,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:13:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-11 19:13:43,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611381072] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:13:43,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:13:43,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-11 19:13:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976037301] [2022-12-11 19:13:43,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:13:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 19:13:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 19:13:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-11 19:13:43,336 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-11 19:13:43,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 252 flow. Second operand has 18 states, 18 states have (on average 69.0) internal successors, (1242), 18 states have internal predecessors, (1242), 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) [2022-12-11 19:13:43,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:43,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-11 19:13:43,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:43,473 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-11 19:13:43,473 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-11 19:13:43,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 116 events. 2/116 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 189. Up to 11 conditions per place. [2022-12-11 19:13:43,488 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 14 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2022-12-11 19:13:43,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 410 flow [2022-12-11 19:13:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 19:13:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 19:13:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1446 transitions. [2022-12-11 19:13:43,491 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8100840336134454 [2022-12-11 19:13:43,491 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 252 flow. Second operand 21 states and 1446 transitions. [2022-12-11 19:13:43,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 410 flow [2022-12-11 19:13:43,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 100 transitions, 404 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-11 19:13:43,494 INFO L231 Difference]: Finished difference. Result has 117 places, 95 transitions, 376 flow [2022-12-11 19:13:43,494 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=376, PETRI_PLACES=117, PETRI_TRANSITIONS=95} [2022-12-11 19:13:43,494 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 45 predicate places. [2022-12-11 19:13:43,494 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 95 transitions, 376 flow [2022-12-11 19:13:43,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.0) internal successors, (1242), 18 states have internal predecessors, (1242), 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) [2022-12-11 19:13:43,495 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:43,495 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:13:43,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 19:13:43,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:43,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash -103485648, now seen corresponding path program 4 times [2022-12-11 19:13:43,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:43,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747827047] [2022-12-11 19:13:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-11 19:13:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:43,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747827047] [2022-12-11 19:13:43,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747827047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598821508] [2022-12-11 19:13:43,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 19:13:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:43,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:43,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:43,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 19:13:43,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 19:13:43,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:13:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 19:13:43,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-11 19:13:43,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:13:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-11 19:13:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598821508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:13:43,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:13:43,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-11 19:13:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535619177] [2022-12-11 19:13:43,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:13:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 19:13:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 19:13:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-11 19:13:43,964 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 19:13:43,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 95 transitions, 376 flow. Second operand has 18 states, 18 states have (on average 69.94444444444444) internal successors, (1259), 18 states have internal predecessors, (1259), 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) [2022-12-11 19:13:43,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:43,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 19:13:43,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:13:44,120 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2022-12-11 19:13:44,121 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-11 19:13:44,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 148 events. 2/148 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 270. Up to 11 conditions per place. [2022-12-11 19:13:44,122 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 13 selfloop transitions, 21 changer transitions 0/113 dead transitions. [2022-12-11 19:13:44,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 113 transitions, 532 flow [2022-12-11 19:13:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 19:13:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 19:13:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1466 transitions. [2022-12-11 19:13:44,125 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8212885154061624 [2022-12-11 19:13:44,125 INFO L175 Difference]: Start difference. First operand has 117 places, 95 transitions, 376 flow. Second operand 21 states and 1466 transitions. [2022-12-11 19:13:44,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 113 transitions, 532 flow [2022-12-11 19:13:44,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 113 transitions, 508 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-11 19:13:44,128 INFO L231 Difference]: Finished difference. Result has 136 places, 108 transitions, 482 flow [2022-12-11 19:13:44,128 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=482, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2022-12-11 19:13:44,129 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 64 predicate places. [2022-12-11 19:13:44,129 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 482 flow [2022-12-11 19:13:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.94444444444444) internal successors, (1259), 18 states have internal predecessors, (1259), 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) [2022-12-11 19:13:44,130 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:13:44,130 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:13:44,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 19:13:44,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:44,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:13:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:13:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1847889106, now seen corresponding path program 5 times [2022-12-11 19:13:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:13:44,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542196282] [2022-12-11 19:13:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:13:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:13:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:13:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-11 19:13:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:13:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542196282] [2022-12-11 19:13:44,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542196282] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:13:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078512337] [2022-12-11 19:13:44,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 19:13:44,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:13:44,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:13:44,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:13:44,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 19:13:44,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-11 19:13:44,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:13:44,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-11 19:13:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:13:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-11 19:13:44,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:13:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-11 19:13:45,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078512337] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:13:45,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:13:45,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-12-11 19:13:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641931422] [2022-12-11 19:13:45,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:13:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 19:13:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:13:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 19:13:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-12-11 19:13:45,172 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2022-12-11 19:13:45,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 482 flow. Second operand has 47 states, 47 states have (on average 62.297872340425535) internal successors, (2928), 47 states have internal predecessors, (2928), 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) [2022-12-11 19:13:45,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:13:45,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2022-12-11 19:13:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:14:29,134 INFO L130 PetriNetUnfolder]: 2369/6590 cut-off events. [2022-12-11 19:14:29,134 INFO L131 PetriNetUnfolder]: For 22668/22668 co-relation queries the response was YES. [2022-12-11 19:14:29,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23606 conditions, 6590 events. 2369/6590 cut-off events. For 22668/22668 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 44149 event pairs, 20 based on Foata normal form. 360/6947 useless extension candidates. Maximal degree in co-relation 16406. Up to 999 conditions per place. [2022-12-11 19:14:29,183 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 1057 selfloop transitions, 2047 changer transitions 0/3155 dead transitions. [2022-12-11 19:14:29,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1148 places, 3155 transitions, 28498 flow [2022-12-11 19:14:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2022-12-11 19:14:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2022-12-11 19:14:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 64112 transitions. [2022-12-11 19:14:29,234 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7445792927239998 [2022-12-11 19:14:29,234 INFO L175 Difference]: Start difference. First operand has 136 places, 108 transitions, 482 flow. Second operand 1013 states and 64112 transitions. [2022-12-11 19:14:29,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1148 places, 3155 transitions, 28498 flow [2022-12-11 19:14:29,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1142 places, 3155 transitions, 27578 flow, removed 322 selfloop flow, removed 6 redundant places. [2022-12-11 19:14:29,316 INFO L231 Difference]: Finished difference. Result has 1454 places, 2203 transitions, 20214 flow [2022-12-11 19:14:29,317 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=1013, PETRI_FLOW=20214, PETRI_PLACES=1454, PETRI_TRANSITIONS=2203} [2022-12-11 19:14:29,318 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 1382 predicate places. [2022-12-11 19:14:29,318 INFO L495 AbstractCegarLoop]: Abstraction has has 1454 places, 2203 transitions, 20214 flow [2022-12-11 19:14:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 62.297872340425535) internal successors, (2928), 47 states have internal predecessors, (2928), 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) [2022-12-11 19:14:29,319 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:14:29,319 INFO L214 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:14:29,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 19:14:29,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:14:29,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:14:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:14:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 622987473, now seen corresponding path program 6 times [2022-12-11 19:14:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:14:29,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505770866] [2022-12-11 19:14:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:14:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:14:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:14:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 29 proven. 148 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2022-12-11 19:14:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:14:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505770866] [2022-12-11 19:14:30,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505770866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:14:30,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68778819] [2022-12-11 19:14:30,072 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 19:14:30,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:14:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:14:30,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:14:30,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 19:14:30,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-12-11 19:14:30,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:14:30,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-11 19:14:30,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:14:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 29 proven. 148 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2022-12-11 19:14:30,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:14:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 29 proven. 148 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2022-12-11 19:14:30,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68778819] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:14:30,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:14:30,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-12-11 19:14:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449306441] [2022-12-11 19:14:30,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:14:30,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-11 19:14:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:14:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-11 19:14:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2022-12-11 19:14:30,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2022-12-11 19:14:30,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1454 places, 2203 transitions, 20214 flow. Second operand has 38 states, 38 states have (on average 69.0) internal successors, (2622), 38 states have internal predecessors, (2622), 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) [2022-12-11 19:14:30,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:14:30,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2022-12-11 19:14:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:14:34,291 INFO L130 PetriNetUnfolder]: 1795/6159 cut-off events. [2022-12-11 19:14:34,291 INFO L131 PetriNetUnfolder]: For 1143190/1147131 co-relation queries the response was YES. [2022-12-11 19:14:34,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51424 conditions, 6159 events. 1795/6159 cut-off events. For 1143190/1147131 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 47513 event pairs, 207 based on Foata normal form. 874/6844 useless extension candidates. Maximal degree in co-relation 49942. Up to 1014 conditions per place. [2022-12-11 19:14:34,513 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 24 selfloop transitions, 1427 changer transitions 0/2588 dead transitions. [2022-12-11 19:14:34,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1504 places, 2588 transitions, 29146 flow [2022-12-11 19:14:34,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-11 19:14:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-11 19:14:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3501 transitions. [2022-12-11 19:14:34,516 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8076124567474049 [2022-12-11 19:14:34,516 INFO L175 Difference]: Start difference. First operand has 1454 places, 2203 transitions, 20214 flow. Second operand 51 states and 3501 transitions. [2022-12-11 19:14:34,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1504 places, 2588 transitions, 29146 flow [2022-12-11 19:14:40,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1468 places, 2588 transitions, 26098 flow, removed 318 selfloop flow, removed 36 redundant places. [2022-12-11 19:14:40,514 INFO L231 Difference]: Finished difference. Result has 1478 places, 2574 transitions, 26103 flow [2022-12-11 19:14:40,516 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=17166, PETRI_DIFFERENCE_MINUEND_PLACES=1418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=26103, PETRI_PLACES=1478, PETRI_TRANSITIONS=2574} [2022-12-11 19:14:40,519 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 1406 predicate places. [2022-12-11 19:14:40,519 INFO L495 AbstractCegarLoop]: Abstraction has has 1478 places, 2574 transitions, 26103 flow [2022-12-11 19:14:40,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 69.0) internal successors, (2622), 38 states have internal predecessors, (2622), 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) [2022-12-11 19:14:40,520 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:14:40,521 INFO L214 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:14:40,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 19:14:40,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:14:40,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:14:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:14:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash -350125404, now seen corresponding path program 7 times [2022-12-11 19:14:40,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:14:40,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282377022] [2022-12-11 19:14:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:14:40,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:14:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:14:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 366 proven. 855 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-12-11 19:14:41,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:14:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282377022] [2022-12-11 19:14:41,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282377022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:14:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62948786] [2022-12-11 19:14:41,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 19:14:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:14:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:14:41,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:14:41,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 19:14:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:14:41,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 19:14:41,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:14:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 366 proven. 855 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-12-11 19:14:41,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:14:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 366 proven. 855 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-12-11 19:14:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62948786] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:14:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:14:42,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2022-12-11 19:14:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093020342] [2022-12-11 19:14:42,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:14:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 19:14:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:14:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 19:14:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-12-11 19:14:42,190 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-11 19:14:42,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1478 places, 2574 transitions, 26103 flow. Second operand has 43 states, 43 states have (on average 70.02325581395348) internal successors, (3011), 43 states have internal predecessors, (3011), 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) [2022-12-11 19:14:42,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:14:42,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-11 19:14:42,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:14:47,831 INFO L130 PetriNetUnfolder]: 2435/8275 cut-off events. [2022-12-11 19:14:47,832 INFO L131 PetriNetUnfolder]: For 4219545/4223758 co-relation queries the response was YES. [2022-12-11 19:14:48,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61157 conditions, 8275 events. 2435/8275 cut-off events. For 4219545/4223758 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 66173 event pairs, 297 based on Foata normal form. 104/8181 useless extension candidates. Maximal degree in co-relation 59561. Up to 1345 conditions per place. [2022-12-11 19:14:48,139 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 180 selfloop transitions, 1380 changer transitions 0/3046 dead transitions. [2022-12-11 19:14:48,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1537 places, 3046 transitions, 34247 flow [2022-12-11 19:14:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-11 19:14:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-11 19:14:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4171 transitions. [2022-12-11 19:14:48,143 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.817843137254902 [2022-12-11 19:14:48,143 INFO L175 Difference]: Start difference. First operand has 1478 places, 2574 transitions, 26103 flow. Second operand 60 states and 4171 transitions. [2022-12-11 19:14:48,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1537 places, 3046 transitions, 34247 flow [2022-12-11 19:14:54,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1446 places, 3046 transitions, 30699 flow, removed 710 selfloop flow, removed 91 redundant places. [2022-12-11 19:14:54,602 INFO L231 Difference]: Finished difference. Result has 1452 places, 2942 transitions, 29097 flow [2022-12-11 19:14:54,604 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=22555, PETRI_DIFFERENCE_MINUEND_PLACES=1387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=29097, PETRI_PLACES=1452, PETRI_TRANSITIONS=2942} [2022-12-11 19:14:54,605 INFO L295 CegarLoopForPetriNet]: 72 programPoint places, 1380 predicate places. [2022-12-11 19:14:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 1452 places, 2942 transitions, 29097 flow [2022-12-11 19:14:54,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 70.02325581395348) internal successors, (3011), 43 states have internal predecessors, (3011), 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) [2022-12-11 19:14:54,606 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:14:54,606 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:14:54,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-11 19:14:54,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-11 19:14:54,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 19:14:54,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:14:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash 242212853, now seen corresponding path program 8 times [2022-12-11 19:14:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:14:54,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864991195] [2022-12-11 19:14:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:14:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:14:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:14:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 0 proven. 2237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:14:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:14:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864991195] [2022-12-11 19:14:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864991195] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:14:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834066288] [2022-12-11 19:14:56,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 19:14:56,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:14:56,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:14:56,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:14:56,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 19:14:56,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 19:14:56,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 19:14:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-11 19:14:56,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:14:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 20 proven. 697 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2022-12-11 19:14:57,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:14:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2237 backedges. 20 proven. 697 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2022-12-11 19:14:59,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834066288] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:14:59,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:14:59,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 37, 37] total 102 [2022-12-11 19:14:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881272169] [2022-12-11 19:14:59,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:14:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-12-11 19:14:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:14:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-12-11 19:14:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1475, Invalid=8827, Unknown=0, NotChecked=0, Total=10302 [2022-12-11 19:14:59,075 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 85 [2022-12-11 19:14:59,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1452 places, 2942 transitions, 29097 flow. Second operand has 102 states, 102 states have (on average 58.666666666666664) internal successors, (5984), 102 states have internal predecessors, (5984), 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) [2022-12-11 19:14:59,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:14:59,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 85 [2022-12-11 19:14:59,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand