/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:45,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:45,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:45,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:04:45,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:04:45,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:04:45,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:04:45,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:04:45,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:04:45,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:04:45,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:04:45,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:04:45,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:45,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:45,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:45,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:45,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:45,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:45,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:45,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:45,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:45,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:45,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:45,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:45,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:04:45,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:04:45,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:04:45,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:04:45,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:04:45,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:04:45,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:04:45,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:04:45,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:04:45,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:45,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:45,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:45,589 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-VariableLbe.epf [2023-01-28 07:04:45,610 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:45,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:45,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:45,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:45,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:45,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:45,612 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:45,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:45,612 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:45,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:45,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:45,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:45,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:45,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:45,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:45,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:45,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:45,615 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:45,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:45,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:45,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:45,789 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:45,790 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:45,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-28 07:04:46,782 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:46,989 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:46,990 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-28 07:04:47,004 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9b4d3ef/40e2db697719441391cd8435d73bfe26/FLAG9a6fbaf3b [2023-01-28 07:04:47,013 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9b4d3ef/40e2db697719441391cd8435d73bfe26 [2023-01-28 07:04:47,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:47,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:47,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:47,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:47,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:47,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad61919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47, skipping insertion in model container [2023-01-28 07:04:47,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:47,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:47,166 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 07:04:47,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-01-28 07:04:47,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:47,499 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:47,506 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 07:04:47,527 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-01-28 07:04:47,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:47,630 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:47,630 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:47,630 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:47,635 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:47,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47 WrapperNode [2023-01-28 07:04:47,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:47,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:47,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:47,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:47,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,683 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-01-28 07:04:47,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:47,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:47,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:47,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:47,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:47,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:47,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:47,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:47,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (1/1) ... [2023-01-28 07:04:47,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:47,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:04:47,738 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 [2023-01-28 07:04:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 07:04:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:47,770 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:04:48,022 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:48,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:48,184 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:48,203 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:48,203 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:48,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:48 BoogieIcfgContainer [2023-01-28 07:04:48,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:48,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:48,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:48,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:48,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:47" (1/3) ... [2023-01-28 07:04:48,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700bcd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:48, skipping insertion in model container [2023-01-28 07:04:48,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:47" (2/3) ... [2023-01-28 07:04:48,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700bcd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:48, skipping insertion in model container [2023-01-28 07:04:48,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:48" (3/3) ... [2023-01-28 07:04:48,214 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-01-28 07:04:48,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:48,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-28 07:04:48,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:48,284 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 07:04:48,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 147 transitions, 310 flow [2023-01-28 07:04:48,378 INFO L130 PetriNetUnfolder]: 8/185 cut-off events. [2023-01-28 07:04:48,378 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:48,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 8/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-01-28 07:04:48,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 147 transitions, 310 flow [2023-01-28 07:04:48,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 135 transitions, 282 flow [2023-01-28 07:04:48,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:48,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-28 07:04:48,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-28 07:04:48,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 282 flow [2023-01-28 07:04:48,436 INFO L130 PetriNetUnfolder]: 5/166 cut-off events. [2023-01-28 07:04:48,439 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:04:48,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 5/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 257 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-01-28 07:04:48,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 1780 [2023-01-28 07:04:55,127 INFO L134 LiptonReduction]: Checked pairs total: 2885 [2023-01-28 07:04:55,127 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-01-28 07:04:55,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:04:55,163 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;@248d71c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:04:55,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:04:55,166 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 07:04:55,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:55,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:55,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 07:04:55,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:55,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash 484403235, now seen corresponding path program 1 times [2023-01-28 07:04:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843149933] [2023-01-28 07:04:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:55,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843149933] [2023-01-28 07:04:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843149933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258129110] [2023-01-28 07:04:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:55,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:55,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:55,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:55,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:55,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-28 07:04:55,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-01-28 07:04:55,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:55,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-28 07:04:55,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:55,844 INFO L130 PetriNetUnfolder]: 242/444 cut-off events. [2023-01-28 07:04:55,844 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 07:04:55,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 444 events. 242/444 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1815 event pairs, 137 based on Foata normal form. 17/409 useless extension candidates. Maximal degree in co-relation 830. Up to 369 conditions per place. [2023-01-28 07:04:55,848 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-28 07:04:55,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-01-28 07:04:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-01-28 07:04:55,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-01-28 07:04:55,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-01-28 07:04:55,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-01-28 07:04:55,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:55,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-01-28 07:04:55,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2023-01-28 07:04:55,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:55,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:55,882 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 3 states and 351 transitions. [2023-01-28 07:04:55,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-01-28 07:04:55,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:55,885 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2023-01-28 07:04:55,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 07:04:55,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-01-28 07:04:55,891 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2023-01-28 07:04:55,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-01-28 07:04:55,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:55,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 07:04:55,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:55,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:55,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 15625942, now seen corresponding path program 1 times [2023-01-28 07:04:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:55,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972402665] [2023-01-28 07:04:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972402665] [2023-01-28 07:04:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972402665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:56,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587928175] [2023-01-28 07:04:56,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:56,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:56,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-28 07:04:56,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-01-28 07:04:56,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:56,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-28 07:04:56,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:56,211 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2023-01-28 07:04:56,211 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-01-28 07:04:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 536 events. 291/536 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2378 event pairs, 151 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 511. Up to 461 conditions per place. [2023-01-28 07:04:56,215 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-01-28 07:04:56,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 219 flow [2023-01-28 07:04:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-01-28 07:04:56,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675990675990675 [2023-01-28 07:04:56,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-01-28 07:04:56,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-01-28 07:04:56,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:56,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-01-28 07:04:56,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-01-28 07:04:56,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:56,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:56,220 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 349 transitions. [2023-01-28 07:04:56,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 219 flow [2023-01-28 07:04:56,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:56,222 INFO L231 Difference]: Finished difference. Result has 31 places, 35 transitions, 155 flow [2023-01-28 07:04:56,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=31, PETRI_TRANSITIONS=35} [2023-01-28 07:04:56,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 07:04:56,223 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 35 transitions, 155 flow [2023-01-28 07:04:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-01-28 07:04:56,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:56,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:04:56,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:56,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash 957445618, now seen corresponding path program 1 times [2023-01-28 07:04:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016964274] [2023-01-28 07:04:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016964274] [2023-01-28 07:04:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016964274] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771899901] [2023-01-28 07:04:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:56,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 286 [2023-01-28 07:04:56,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-01-28 07:04:56,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:56,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 286 [2023-01-28 07:04:56,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:56,335 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-01-28 07:04:56,335 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-01-28 07:04:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 144 events. 72/144 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 399 event pairs, 48 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 105 conditions per place. [2023-01-28 07:04:56,336 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-28 07:04:56,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-01-28 07:04:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-01-28 07:04:56,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766899766899767 [2023-01-28 07:04:56,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-01-28 07:04:56,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-01-28 07:04:56,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:56,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-01-28 07:04:56,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-01-28 07:04:56,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:56,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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) [2023-01-28 07:04:56,341 INFO L175 Difference]: Start difference. First operand has 31 places, 35 transitions, 155 flow. Second operand 3 states and 409 transitions. [2023-01-28 07:04:56,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-01-28 07:04:56,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:56,342 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 52 flow [2023-01-28 07:04:56,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-01-28 07:04:56,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-01-28 07:04:56,343 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 52 flow [2023-01-28 07:04:56,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2023-01-28 07:04:56,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:56,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:56,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:04:56,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:56,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash -977371176, now seen corresponding path program 1 times [2023-01-28 07:04:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:56,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909450454] [2023-01-28 07:04:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:56,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909450454] [2023-01-28 07:04:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909450454] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502314870] [2023-01-28 07:04:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:57,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:04:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:04:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:04:57,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-28 07:04:57,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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) [2023-01-28 07:04:57,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:57,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-28 07:04:57,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:57,193 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-01-28 07:04:57,193 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-28 07:04:57,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 208 events. 94/208 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 746 event pairs, 9 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 536. Up to 83 conditions per place. [2023-01-28 07:04:57,194 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-01-28 07:04:57,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 216 flow [2023-01-28 07:04:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2023-01-28 07:04:57,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34440559440559443 [2023-01-28 07:04:57,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2023-01-28 07:04:57,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2023-01-28 07:04:57,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:57,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2023-01-28 07:04:57,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 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) [2023-01-28 07:04:57,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 07:04:57,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 07:04:57,200 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 52 flow. Second operand 6 states and 591 transitions. [2023-01-28 07:04:57,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 216 flow [2023-01-28 07:04:57,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:57,201 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 108 flow [2023-01-28 07:04:57,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-01-28 07:04:57,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-01-28 07:04:57,202 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 108 flow [2023-01-28 07:04:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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) [2023-01-28 07:04:57,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:57,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:04:57,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:57,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash -315346906, now seen corresponding path program 2 times [2023-01-28 07:04:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674079231] [2023-01-28 07:04:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674079231] [2023-01-28 07:04:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674079231] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:57,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:57,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86503699] [2023-01-28 07:04:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:04:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:04:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:04:57,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-28 07:04:57,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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) [2023-01-28 07:04:57,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:57,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-28 07:04:57,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:57,812 INFO L130 PetriNetUnfolder]: 95/216 cut-off events. [2023-01-28 07:04:57,812 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-01-28 07:04:57,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 216 events. 95/216 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 789 event pairs, 26 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-01-28 07:04:57,813 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 31 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2023-01-28 07:04:57,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 259 flow [2023-01-28 07:04:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2023-01-28 07:04:57,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34032634032634035 [2023-01-28 07:04:57,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 584 transitions. [2023-01-28 07:04:57,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 584 transitions. [2023-01-28 07:04:57,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:57,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 584 transitions. [2023-01-28 07:04:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 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) [2023-01-28 07:04:57,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 07:04:57,819 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 07:04:57,819 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 108 flow. Second operand 6 states and 584 transitions. [2023-01-28 07:04:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 259 flow [2023-01-28 07:04:57,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:57,820 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 151 flow [2023-01-28 07:04:57,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-28 07:04:57,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 07:04:57,821 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 151 flow [2023-01-28 07:04:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 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) [2023-01-28 07:04:57,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:57,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:04:57,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:57,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash -315346905, now seen corresponding path program 1 times [2023-01-28 07:04:57,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47821364] [2023-01-28 07:04:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:58,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47821364] [2023-01-28 07:04:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47821364] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:58,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 07:04:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419851547] [2023-01-28 07:04:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 07:04:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 07:04:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-28 07:04:58,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:04:58,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2023-01-28 07:04:58,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:58,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:04:58,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:59,682 INFO L130 PetriNetUnfolder]: 136/311 cut-off events. [2023-01-28 07:04:59,682 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-01-28 07:04:59,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 311 events. 136/311 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1366 event pairs, 30 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 977. Up to 178 conditions per place. [2023-01-28 07:04:59,684 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 51 selfloop transitions, 22 changer transitions 14/87 dead transitions. [2023-01-28 07:04:59,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 87 transitions, 631 flow [2023-01-28 07:04:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 07:04:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 07:04:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1203 transitions. [2023-01-28 07:04:59,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235610543302851 [2023-01-28 07:04:59,688 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1203 transitions. [2023-01-28 07:04:59,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1203 transitions. [2023-01-28 07:04:59,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:59,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1203 transitions. [2023-01-28 07:04:59,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.53846153846153) internal successors, (1203), 13 states have internal predecessors, (1203), 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) [2023-01-28 07:04:59,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 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) [2023-01-28 07:04:59,694 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 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) [2023-01-28 07:04:59,694 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 151 flow. Second operand 13 states and 1203 transitions. [2023-01-28 07:04:59,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 87 transitions, 631 flow [2023-01-28 07:04:59,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:59,697 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 395 flow [2023-01-28 07:04:59,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-28 07:04:59,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-01-28 07:04:59,698 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 395 flow [2023-01-28 07:04:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2023-01-28 07:04:59,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:59,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:04:59,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:04:59,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash 279140853, now seen corresponding path program 2 times [2023-01-28 07:04:59,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:59,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259987749] [2023-01-28 07:04:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:59,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:00,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259987749] [2023-01-28 07:05:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259987749] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:00,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:00,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 07:05:00,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890791869] [2023-01-28 07:05:00,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:00,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 07:05:00,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 07:05:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 07:05:00,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:05:00,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 395 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:00,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:00,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:05:00,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:01,594 INFO L130 PetriNetUnfolder]: 159/370 cut-off events. [2023-01-28 07:05:01,594 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2023-01-28 07:05:01,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 370 events. 159/370 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1721 event pairs, 34 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1488. Up to 203 conditions per place. [2023-01-28 07:05:01,596 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 64 selfloop transitions, 36 changer transitions 16/116 dead transitions. [2023-01-28 07:05:01,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 1067 flow [2023-01-28 07:05:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 07:05:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 07:05:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1205 transitions. [2023-01-28 07:05:01,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3240989779451318 [2023-01-28 07:05:01,600 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1205 transitions. [2023-01-28 07:05:01,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1205 transitions. [2023-01-28 07:05:01,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:01,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1205 transitions. [2023-01-28 07:05:01,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.6923076923077) internal successors, (1205), 13 states have internal predecessors, (1205), 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) [2023-01-28 07:05:01,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 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) [2023-01-28 07:05:01,609 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 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) [2023-01-28 07:05:01,609 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 395 flow. Second operand 13 states and 1205 transitions. [2023-01-28 07:05:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 1067 flow [2023-01-28 07:05:01,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 966 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:01,615 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 689 flow [2023-01-28 07:05:01,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=689, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2023-01-28 07:05:01,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-01-28 07:05:01,616 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 689 flow [2023-01-28 07:05:01,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:01,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:01,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:01,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:05:01,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:05:01,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:01,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1141973469, now seen corresponding path program 3 times [2023-01-28 07:05:01,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:01,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105571235] [2023-01-28 07:05:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:01,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:02,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:02,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105571235] [2023-01-28 07:05:02,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105571235] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:02,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:02,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 07:05:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320656316] [2023-01-28 07:05:02,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 07:05:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 07:05:02,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-28 07:05:02,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:05:02,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 689 flow. Second operand has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2023-01-28 07:05:02,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:02,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:05:02,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:03,365 INFO L130 PetriNetUnfolder]: 214/486 cut-off events. [2023-01-28 07:05:03,365 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2023-01-28 07:05:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 486 events. 214/486 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2451 event pairs, 52 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2174. Up to 254 conditions per place. [2023-01-28 07:05:03,368 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 85 selfloop transitions, 42 changer transitions 16/143 dead transitions. [2023-01-28 07:05:03,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1449 flow [2023-01-28 07:05:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 07:05:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 07:05:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1389 transitions. [2023-01-28 07:05:03,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3237762237762238 [2023-01-28 07:05:03,371 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1389 transitions. [2023-01-28 07:05:03,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1389 transitions. [2023-01-28 07:05:03,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:03,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1389 transitions. [2023-01-28 07:05:03,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.6) internal successors, (1389), 15 states have internal predecessors, (1389), 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) [2023-01-28 07:05:03,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 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) [2023-01-28 07:05:03,391 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 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) [2023-01-28 07:05:03,391 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 689 flow. Second operand 15 states and 1389 transitions. [2023-01-28 07:05:03,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1449 flow [2023-01-28 07:05:03,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 1345 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:03,414 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 987 flow [2023-01-28 07:05:03,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=987, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2023-01-28 07:05:03,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2023-01-28 07:05:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 987 flow [2023-01-28 07:05:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2023-01-28 07:05:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:05:03,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:05:03,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037109, now seen corresponding path program 4 times [2023-01-28 07:05:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:03,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104603660] [2023-01-28 07:05:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:03,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104603660] [2023-01-28 07:05:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104603660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:04,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 07:05:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070024428] [2023-01-28 07:05:04,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 07:05:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 07:05:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 07:05:04,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:05:04,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:04,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:04,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:05:04,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:05,113 INFO L130 PetriNetUnfolder]: 303/653 cut-off events. [2023-01-28 07:05:05,114 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-01-28 07:05:05,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 653 events. 303/653 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3501 event pairs, 59 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3185. Up to 374 conditions per place. [2023-01-28 07:05:05,117 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 89 selfloop transitions, 62 changer transitions 15/166 dead transitions. [2023-01-28 07:05:05,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1909 flow [2023-01-28 07:05:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:05:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:05:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1113 transitions. [2023-01-28 07:05:05,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3243006993006993 [2023-01-28 07:05:05,120 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1113 transitions. [2023-01-28 07:05:05,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1113 transitions. [2023-01-28 07:05:05,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:05,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1113 transitions. [2023-01-28 07:05:05,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.75) internal successors, (1113), 12 states have internal predecessors, (1113), 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) [2023-01-28 07:05:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 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) [2023-01-28 07:05:05,126 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 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) [2023-01-28 07:05:05,126 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 987 flow. Second operand 12 states and 1113 transitions. [2023-01-28 07:05:05,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1909 flow [2023-01-28 07:05:05,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 166 transitions, 1832 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-01-28 07:05:05,136 INFO L231 Difference]: Finished difference. Result has 86 places, 124 transitions, 1443 flow [2023-01-28 07:05:05,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1443, PETRI_PLACES=86, PETRI_TRANSITIONS=124} [2023-01-28 07:05:05,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 07:05:05,137 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 1443 flow [2023-01-28 07:05:05,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:05,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:05,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:05,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:05:05,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:05:05,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 414718599, now seen corresponding path program 5 times [2023-01-28 07:05:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61794641] [2023-01-28 07:05:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:06,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:06,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61794641] [2023-01-28 07:05:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61794641] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 07:05:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384799691] [2023-01-28 07:05:06,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:06,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 07:05:06,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:06,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 07:05:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 07:05:06,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:05:06,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 1443 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:06,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:06,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:05:06,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:06,911 INFO L130 PetriNetUnfolder]: 347/809 cut-off events. [2023-01-28 07:05:06,912 INFO L131 PetriNetUnfolder]: For 3823/3823 co-relation queries the response was YES. [2023-01-28 07:05:06,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 809 events. 347/809 cut-off events. For 3823/3823 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4899 event pairs, 97 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 4212. Up to 448 conditions per place. [2023-01-28 07:05:06,917 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 143 selfloop transitions, 61 changer transitions 16/220 dead transitions. [2023-01-28 07:05:06,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 2706 flow [2023-01-28 07:05:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:05:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:05:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1310 transitions. [2023-01-28 07:05:06,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271728271728272 [2023-01-28 07:05:06,920 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1310 transitions. [2023-01-28 07:05:06,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1310 transitions. [2023-01-28 07:05:06,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:06,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1310 transitions. [2023-01-28 07:05:06,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.57142857142857) internal successors, (1310), 14 states have internal predecessors, (1310), 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) [2023-01-28 07:05:06,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 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) [2023-01-28 07:05:06,927 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 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) [2023-01-28 07:05:06,927 INFO L175 Difference]: Start difference. First operand has 86 places, 124 transitions, 1443 flow. Second operand 14 states and 1310 transitions. [2023-01-28 07:05:06,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 2706 flow [2023-01-28 07:05:06,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 220 transitions, 2627 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-01-28 07:05:06,948 INFO L231 Difference]: Finished difference. Result has 100 places, 158 transitions, 2003 flow [2023-01-28 07:05:06,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2003, PETRI_PLACES=100, PETRI_TRANSITIONS=158} [2023-01-28 07:05:06,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2023-01-28 07:05:06,949 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 158 transitions, 2003 flow [2023-01-28 07:05:06,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:06,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:06,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:06,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:05:06,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:05:06,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash -866076185, now seen corresponding path program 6 times [2023-01-28 07:05:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:06,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936864755] [2023-01-28 07:05:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:05:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:05:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:05:07,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936864755] [2023-01-28 07:05:07,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936864755] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:05:07,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:05:07,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 07:05:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466735430] [2023-01-28 07:05:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:05:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 07:05:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:05:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 07:05:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 07:05:07,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 07:05:07,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 158 transitions, 2003 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:07,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:05:07,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 07:05:07,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:05:08,653 INFO L130 PetriNetUnfolder]: 344/801 cut-off events. [2023-01-28 07:05:08,653 INFO L131 PetriNetUnfolder]: For 4889/4889 co-relation queries the response was YES. [2023-01-28 07:05:08,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 801 events. 344/801 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4824 event pairs, 115 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4436. Up to 520 conditions per place. [2023-01-28 07:05:08,658 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 134 selfloop transitions, 58 changer transitions 15/207 dead transitions. [2023-01-28 07:05:08,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 2727 flow [2023-01-28 07:05:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 07:05:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 07:05:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1302 transitions. [2023-01-28 07:05:08,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32517482517482516 [2023-01-28 07:05:08,661 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1302 transitions. [2023-01-28 07:05:08,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1302 transitions. [2023-01-28 07:05:08,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:05:08,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1302 transitions. [2023-01-28 07:05:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2023-01-28 07:05:08,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 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) [2023-01-28 07:05:08,669 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 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) [2023-01-28 07:05:08,669 INFO L175 Difference]: Start difference. First operand has 100 places, 158 transitions, 2003 flow. Second operand 14 states and 1302 transitions. [2023-01-28 07:05:08,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 2727 flow [2023-01-28 07:05:08,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 2630 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-28 07:05:08,688 INFO L231 Difference]: Finished difference. Result has 110 places, 163 transitions, 2144 flow [2023-01-28 07:05:08,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2144, PETRI_PLACES=110, PETRI_TRANSITIONS=163} [2023-01-28 07:05:08,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2023-01-28 07:05:08,688 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 163 transitions, 2144 flow [2023-01-28 07:05:08,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 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) [2023-01-28 07:05:08,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:05:08,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:05:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:05:08,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:05:08,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:05:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -627786791, now seen corresponding path program 7 times [2023-01-28 07:05:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:05:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110760499] [2023-01-28 07:05:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:05:08,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:05:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:05:08,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:05:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:05:08,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:05:08,762 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:05:08,762 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 07:05:08,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-28 07:05:08,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-01-28 07:05:08,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 07:05:08,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-28 07:05:08,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-01-28 07:05:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:05:08,764 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-01-28 07:05:08,767 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:05:08,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:05:08,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:05:08 BasicIcfg [2023-01-28 07:05:08,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:05:08,816 INFO L158 Benchmark]: Toolchain (without parser) took 21800.73ms. Allocated memory was 520.1MB in the beginning and 975.2MB in the end (delta: 455.1MB). Free memory was 467.1MB in the beginning and 428.1MB in the end (delta: 39.0MB). Peak memory consumption was 496.9MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,816 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 309.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:05:08,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.36ms. Allocated memory is still 520.1MB. Free memory was 466.8MB in the beginning and 460.5MB in the end (delta: 6.4MB). Peak memory consumption was 45.4MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.20ms. Allocated memory is still 520.1MB. Free memory was 460.5MB in the beginning and 457.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,817 INFO L158 Benchmark]: Boogie Preprocessor took 25.34ms. Allocated memory is still 520.1MB. Free memory was 457.7MB in the beginning and 455.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,817 INFO L158 Benchmark]: RCFGBuilder took 495.95ms. Allocated memory is still 520.1MB. Free memory was 455.0MB in the beginning and 430.4MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,817 INFO L158 Benchmark]: TraceAbstraction took 20608.83ms. Allocated memory was 520.1MB in the beginning and 975.2MB in the end (delta: 455.1MB). Free memory was 429.8MB in the beginning and 428.1MB in the end (delta: 1.7MB). Peak memory consumption was 457.8MB. Max. memory is 16.0GB. [2023-01-28 07:05:08,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 309.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 619.36ms. Allocated memory is still 520.1MB. Free memory was 466.8MB in the beginning and 460.5MB in the end (delta: 6.4MB). Peak memory consumption was 45.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.20ms. Allocated memory is still 520.1MB. Free memory was 460.5MB in the beginning and 457.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.34ms. Allocated memory is still 520.1MB. Free memory was 457.7MB in the beginning and 455.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 495.95ms. Allocated memory is still 520.1MB. Free memory was 455.0MB in the beginning and 430.4MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 20608.83ms. Allocated memory was 520.1MB in the beginning and 975.2MB in the end (delta: 455.1MB). Free memory was 429.8MB in the beginning and 428.1MB in the end (delta: 1.7MB). Peak memory consumption was 457.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 137 PlacesBefore, 30 PlacesAfterwards, 135 TransitionsBefore, 26 TransitionsAfterwards, 1780 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 139 TotalNumberOfCompositions, 2885 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1578, independent: 1447, independent conditional: 0, independent unconditional: 1447, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 929, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1578, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 929, unknown conditional: 0, unknown unconditional: 929] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [\read(t1)=-2, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1721] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 154 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3521 IncrementalHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 1 mSDtfsCounter, 3521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=11, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 3191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 07:05:08,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...