/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/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:01:23,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:01:23,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:01:23,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:01:23,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:01:23,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:01:23,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:01:23,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:01:23,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:01:23,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:01:23,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:01:23,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:01:23,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:01:23,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:01:23,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:01:23,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:01:23,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:01:23,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:01:23,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:01:23,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:01:23,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:01:23,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:01:23,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:01:23,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:01:23,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:01:23,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:01:23,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:01:23,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:01:23,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:01:23,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:01:23,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:01:23,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:01:23,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:01:23,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:01:23,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:01:23,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:01:23,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:01:23,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:01:23,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:01:23,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:01:23,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:01:23,152 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 12:01:23,173 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:01:23,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:01:23,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:01:23,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:01:23,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:01:23,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:01:23,175 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:01:23,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:01:23,175 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:01:23,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:01:23,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:01:23,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:01:23,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:01:23,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:01:23,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:01:23,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:01:23,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:01:23,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:01:23,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:01:23,351 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:01:23,352 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:01:23,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-01-28 12:01:24,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:01:24,499 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:01:24,499 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-01-28 12:01:24,504 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766c190b/42cf9894326b46e282363d7664261e7b/FLAGad84d1d32 [2023-01-28 12:01:24,518 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766c190b/42cf9894326b46e282363d7664261e7b [2023-01-28 12:01:24,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:01:24,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:01:24,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:01:24,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:01:24,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:01:24,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acb799e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24, skipping insertion in model container [2023-01-28 12:01:24,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:01:24,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:01:24,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-01-28 12:01:24,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:01:24,667 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:01:24,693 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3373,3386] [2023-01-28 12:01:24,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:01:24,699 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 12:01:24,699 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 12:01:24,704 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:01:24,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24 WrapperNode [2023-01-28 12:01:24,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:01:24,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:01:24,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:01:24,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:01:24,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,742 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-01-28 12:01:24,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:01:24,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:01:24,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:01:24,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:01:24,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:01:24,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:01:24,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:01:24,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:01:24,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (1/1) ... [2023-01-28 12:01:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:01:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:24,793 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 12:01:24,799 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 12:01:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:01:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:01:24,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:01:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:01:24,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 12:01:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 12:01:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:01:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:01:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:01:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:01:24,821 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 12:01:24,898 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:01:24,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:01:25,128 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:01:25,181 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:01:25,182 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 12:01:25,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:01:25 BoogieIcfgContainer [2023-01-28 12:01:25,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:01:25,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:01:25,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:01:25,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:01:25,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:01:24" (1/3) ... [2023-01-28 12:01:25,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae971c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:01:25, skipping insertion in model container [2023-01-28 12:01:25,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:01:24" (2/3) ... [2023-01-28 12:01:25,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae971c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:01:25, skipping insertion in model container [2023-01-28 12:01:25,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:01:25" (3/3) ... [2023-01-28 12:01:25,189 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-01-28 12:01:25,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:01:25,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:01:25,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:01:25,291 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 12:01:25,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 298 flow [2023-01-28 12:01:25,457 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 12:01:25,458 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 12:01:25,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 10/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 12:01:25,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 133 transitions, 298 flow [2023-01-28 12:01:25,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 117 transitions, 258 flow [2023-01-28 12:01:25,471 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:01:25,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 117 transitions, 258 flow [2023-01-28 12:01:25,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 117 transitions, 258 flow [2023-01-28 12:01:25,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 117 transitions, 258 flow [2023-01-28 12:01:25,507 INFO L130 PetriNetUnfolder]: 10/117 cut-off events. [2023-01-28 12:01:25,508 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 12:01:25,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 117 events. 10/117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-01-28 12:01:25,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 12:01:28,230 INFO L134 LiptonReduction]: Checked pairs total: 3486 [2023-01-28 12:01:28,231 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-01-28 12:01:28,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:01:28,252 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;@31e7cbc4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:01:28,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 12:01:28,258 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-01-28 12:01:28,258 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 12:01:28,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:28,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:28,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:28,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -964385068, now seen corresponding path program 1 times [2023-01-28 12:01:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334325412] [2023-01-28 12:01:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:28,662 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 12:01:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334325412] [2023-01-28 12:01:28,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334325412] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 12:01:28,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175762209] [2023-01-28 12:01:28,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:28,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:01:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:01:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:01:28,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 228 [2023-01-28 12:01:28,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 12:01:28,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:28,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 228 [2023-01-28 12:01:28,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:28,905 INFO L130 PetriNetUnfolder]: 1537/2184 cut-off events. [2023-01-28 12:01:28,905 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-01-28 12:01:28,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 2184 events. 1537/2184 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9237 event pairs, 141 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 3271. Up to 1733 conditions per place. [2023-01-28 12:01:28,919 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-01-28 12:01:28,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 249 flow [2023-01-28 12:01:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:01:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:01:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-01-28 12:01:28,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-01-28 12:01:28,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-01-28 12:01:28,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-01-28 12:01:28,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:28,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-01-28 12:01:28,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 12:01:28,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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 12:01:28,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 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 12:01:28,945 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 90 flow. Second operand 3 states and 372 transitions. [2023-01-28 12:01:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 249 flow [2023-01-28 12:01:28,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 219 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 12:01:28,951 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 107 flow [2023-01-28 12:01:28,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-28 12:01:28,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 12:01:28,956 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 107 flow [2023-01-28 12:01:28,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 12:01:28,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:28,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:28,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:01:28,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:28,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1878883062, now seen corresponding path program 1 times [2023-01-28 12:01:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:28,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807489768] [2023-01-28 12:01:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:28,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:29,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:29,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807489768] [2023-01-28 12:01:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807489768] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:29,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:29,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:01:29,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913275446] [2023-01-28 12:01:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:01:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:29,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:01:29,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:01:29,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 12:01:29,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 12:01:29,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:29,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 12:01:29,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:29,681 INFO L130 PetriNetUnfolder]: 3101/4276 cut-off events. [2023-01-28 12:01:29,681 INFO L131 PetriNetUnfolder]: For 1157/1169 co-relation queries the response was YES. [2023-01-28 12:01:29,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10117 conditions, 4276 events. 3101/4276 cut-off events. For 1157/1169 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 20379 event pairs, 700 based on Foata normal form. 40/4192 useless extension candidates. Maximal degree in co-relation 2568. Up to 1880 conditions per place. [2023-01-28 12:01:29,702 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-01-28 12:01:29,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 101 transitions, 490 flow [2023-01-28 12:01:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:01:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:01:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-01-28 12:01:29,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271929824561403 [2023-01-28 12:01:29,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-01-28 12:01:29,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-01-28 12:01:29,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:29,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-01-28 12:01:29,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 12:01:29,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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 12:01:29,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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 12:01:29,708 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 107 flow. Second operand 5 states and 601 transitions. [2023-01-28 12:01:29,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 101 transitions, 490 flow [2023-01-28 12:01:29,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 101 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:29,711 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 166 flow [2023-01-28 12:01:29,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-01-28 12:01:29,712 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-01-28 12:01:29,712 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 166 flow [2023-01-28 12:01:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 12:01:29,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:29,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:01:29,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:29,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1409819620, now seen corresponding path program 2 times [2023-01-28 12:01:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358483072] [2023-01-28 12:01:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358483072] [2023-01-28 12:01:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358483072] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896990608] [2023-01-28 12:01:29,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:01:29,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:29,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:01:29,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:01:30,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:01:30,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:30,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 12:01:30,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:30,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896990608] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:30,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:30,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-01-28 12:01:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890377309] [2023-01-28 12:01:30,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:30,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 12:01:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 12:01:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-01-28 12:01:30,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 12:01:30,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 166 flow. Second operand has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 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 12:01:30,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:30,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 12:01:30,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:32,944 INFO L130 PetriNetUnfolder]: 18233/24516 cut-off events. [2023-01-28 12:01:32,944 INFO L131 PetriNetUnfolder]: For 18287/18287 co-relation queries the response was YES. [2023-01-28 12:01:32,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66866 conditions, 24516 events. 18233/24516 cut-off events. For 18287/18287 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 128006 event pairs, 324 based on Foata normal form. 998/25514 useless extension candidates. Maximal degree in co-relation 37667. Up to 6829 conditions per place. [2023-01-28 12:01:33,114 INFO L137 encePairwiseOnDemand]: 214/228 looper letters, 379 selfloop transitions, 127 changer transitions 7/513 dead transitions. [2023-01-28 12:01:33,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 513 transitions, 2955 flow [2023-01-28 12:01:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:01:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:01:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2521 transitions. [2023-01-28 12:01:33,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48073989321128907 [2023-01-28 12:01:33,120 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2521 transitions. [2023-01-28 12:01:33,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2521 transitions. [2023-01-28 12:01:33,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:33,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2521 transitions. [2023-01-28 12:01:33,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 109.6086956521739) internal successors, (2521), 23 states have internal predecessors, (2521), 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 12:01:33,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 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 12:01:33,133 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 228.0) internal successors, (5472), 24 states have internal predecessors, (5472), 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 12:01:33,133 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 166 flow. Second operand 23 states and 2521 transitions. [2023-01-28 12:01:33,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 513 transitions, 2955 flow [2023-01-28 12:01:33,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 513 transitions, 2879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:33,156 INFO L231 Difference]: Finished difference. Result has 82 places, 203 transitions, 1587 flow [2023-01-28 12:01:33,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1587, PETRI_PLACES=82, PETRI_TRANSITIONS=203} [2023-01-28 12:01:33,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-01-28 12:01:33,157 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 203 transitions, 1587 flow [2023-01-28 12:01:33,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.57142857142857) internal successors, (1324), 14 states have internal predecessors, (1324), 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 12:01:33,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:33,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:33,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:01:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:33,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:33,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash 86619449, now seen corresponding path program 1 times [2023-01-28 12:01:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460372908] [2023-01-28 12:01:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460372908] [2023-01-28 12:01:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460372908] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:01:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919833356] [2023-01-28 12:01:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:33,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:01:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:01:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:01:33,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 12:01:33,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 203 transitions, 1587 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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 12:01:33,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:33,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 12:01:33,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:36,611 INFO L130 PetriNetUnfolder]: 23907/32830 cut-off events. [2023-01-28 12:01:36,611 INFO L131 PetriNetUnfolder]: For 149860/149860 co-relation queries the response was YES. [2023-01-28 12:01:36,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141949 conditions, 32830 events. 23907/32830 cut-off events. For 149860/149860 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 186844 event pairs, 3428 based on Foata normal form. 304/33134 useless extension candidates. Maximal degree in co-relation 138821. Up to 12837 conditions per place. [2023-01-28 12:01:37,017 INFO L137 encePairwiseOnDemand]: 217/228 looper letters, 408 selfloop transitions, 193 changer transitions 0/601 dead transitions. [2023-01-28 12:01:37,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 601 transitions, 5720 flow [2023-01-28 12:01:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 12:01:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 12:01:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-01-28 12:01:37,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2023-01-28 12:01:37,020 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-01-28 12:01:37,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-01-28 12:01:37,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:37,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-01-28 12:01:37,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 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 12:01:37,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 12:01:37,023 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 228.0) internal successors, (1824), 8 states have internal predecessors, (1824), 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 12:01:37,024 INFO L175 Difference]: Start difference. First operand has 82 places, 203 transitions, 1587 flow. Second operand 7 states and 822 transitions. [2023-01-28 12:01:37,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 601 transitions, 5720 flow [2023-01-28 12:01:37,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 601 transitions, 5165 flow, removed 262 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:37,779 INFO L231 Difference]: Finished difference. Result has 92 places, 371 transitions, 3312 flow [2023-01-28 12:01:37,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3312, PETRI_PLACES=92, PETRI_TRANSITIONS=371} [2023-01-28 12:01:37,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2023-01-28 12:01:37,781 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 371 transitions, 3312 flow [2023-01-28 12:01:37,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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 12:01:37,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:37,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:01:37,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:37,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1357728449, now seen corresponding path program 2 times [2023-01-28 12:01:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150904674] [2023-01-28 12:01:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:37,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150904674] [2023-01-28 12:01:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150904674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:01:38,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:01:38,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:01:38,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132583500] [2023-01-28 12:01:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:01:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 12:01:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:38,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 12:01:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:01:38,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 12:01:38,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 371 transitions, 3312 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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 12:01:38,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:38,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 12:01:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:41,581 INFO L130 PetriNetUnfolder]: 26984/37993 cut-off events. [2023-01-28 12:01:41,581 INFO L131 PetriNetUnfolder]: For 214084/214084 co-relation queries the response was YES. [2023-01-28 12:01:41,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182845 conditions, 37993 events. 26984/37993 cut-off events. For 214084/214084 co-relation queries the response was YES. Maximal size of possible extension queue 1424. Compared 233161 event pairs, 3256 based on Foata normal form. 396/38389 useless extension candidates. Maximal degree in co-relation 178683. Up to 17481 conditions per place. [2023-01-28 12:01:41,965 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 543 selfloop transitions, 262 changer transitions 4/809 dead transitions. [2023-01-28 12:01:41,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 809 transitions, 8558 flow [2023-01-28 12:01:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 12:01:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 12:01:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-01-28 12:01:41,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2023-01-28 12:01:41,968 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-01-28 12:01:41,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-01-28 12:01:41,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:01:41,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-01-28 12:01:41,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 12:01:41,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 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 12:01:41,972 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 228.0) internal successors, (2052), 9 states have internal predecessors, (2052), 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 12:01:41,972 INFO L175 Difference]: Start difference. First operand has 92 places, 371 transitions, 3312 flow. Second operand 8 states and 928 transitions. [2023-01-28 12:01:41,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 809 transitions, 8558 flow [2023-01-28 12:01:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 809 transitions, 8417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:01:43,081 INFO L231 Difference]: Finished difference. Result has 104 places, 476 transitions, 5098 flow [2023-01-28 12:01:43,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5098, PETRI_PLACES=104, PETRI_TRANSITIONS=476} [2023-01-28 12:01:43,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-01-28 12:01:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 476 transitions, 5098 flow [2023-01-28 12:01:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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 12:01:43,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:01:43,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:01:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:01:43,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:01:43,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:01:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -58356105, now seen corresponding path program 3 times [2023-01-28 12:01:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:01:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929689692] [2023-01-28 12:01:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:01:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:01:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:01:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:43,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:01:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929689692] [2023-01-28 12:01:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929689692] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:01:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290993240] [2023-01-28 12:01:43,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:01:43,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:01:43,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:01:43,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:01:43,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:01:43,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:01:43,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:01:43,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 12:01:43,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:01:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:43,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:01:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:01:44,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290993240] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:01:44,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:01:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-01-28 12:01:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776101473] [2023-01-28 12:01:44,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:01:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 12:01:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:01:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 12:01:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-01-28 12:01:44,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 12:01:44,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 476 transitions, 5098 flow. Second operand has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 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 12:01:44,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:01:44,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 12:01:44,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:01:46,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:01:48,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:01:50,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:01:53,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:01:55,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:01:57,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:02:00,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:02:02,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:02:04,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:02:06,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-01-28 12:02:17,424 INFO L130 PetriNetUnfolder]: 59752/85123 cut-off events. [2023-01-28 12:02:17,425 INFO L131 PetriNetUnfolder]: For 685691/685691 co-relation queries the response was YES. [2023-01-28 12:02:17,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457734 conditions, 85123 events. 59752/85123 cut-off events. For 685691/685691 co-relation queries the response was YES. Maximal size of possible extension queue 3161. Compared 594202 event pairs, 2982 based on Foata normal form. 2889/88012 useless extension candidates. Maximal degree in co-relation 446270. Up to 24821 conditions per place. [2023-01-28 12:02:18,349 INFO L137 encePairwiseOnDemand]: 214/228 looper letters, 804 selfloop transitions, 1735 changer transitions 12/2551 dead transitions. [2023-01-28 12:02:18,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 2551 transitions, 30699 flow [2023-01-28 12:02:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 12:02:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 12:02:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3581 transitions. [2023-01-28 12:02:18,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47594364699627856 [2023-01-28 12:02:18,356 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3581 transitions. [2023-01-28 12:02:18,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3581 transitions. [2023-01-28 12:02:18,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:02:18,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3581 transitions. [2023-01-28 12:02:18,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 108.51515151515152) internal successors, (3581), 33 states have internal predecessors, (3581), 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 12:02:18,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 228.0) internal successors, (7752), 34 states have internal predecessors, (7752), 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 12:02:18,372 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 228.0) internal successors, (7752), 34 states have internal predecessors, (7752), 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 12:02:18,372 INFO L175 Difference]: Start difference. First operand has 104 places, 476 transitions, 5098 flow. Second operand 33 states and 3581 transitions. [2023-01-28 12:02:18,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 2551 transitions, 30699 flow [2023-01-28 12:02:29,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 2551 transitions, 29902 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-01-28 12:02:29,217 INFO L231 Difference]: Finished difference. Result has 160 places, 1910 transitions, 27290 flow [2023-01-28 12:02:29,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=4917, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=27290, PETRI_PLACES=160, PETRI_TRANSITIONS=1910} [2023-01-28 12:02:29,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2023-01-28 12:02:29,219 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 1910 transitions, 27290 flow [2023-01-28 12:02:29,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 95.13333333333334) internal successors, (1427), 15 states have internal predecessors, (1427), 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 12:02:29,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:02:29,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:02:29,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 12:02:29,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 12:02:29,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:02:29,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:02:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash 790221684, now seen corresponding path program 3 times [2023-01-28 12:02:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:02:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82364517] [2023-01-28 12:02:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:02:29,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:02:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:02:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:02:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:02:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82364517] [2023-01-28 12:02:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82364517] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:02:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:02:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 12:02:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11924180] [2023-01-28 12:02:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:02:29,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 12:02:29,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:02:29,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 12:02:29,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:02:29,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 228 [2023-01-28 12:02:29,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1910 transitions, 27290 flow. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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 12:02:29,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:02:29,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 228 [2023-01-28 12:02:29,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:02,829 INFO L130 PetriNetUnfolder]: 95108/137117 cut-off events. [2023-01-28 12:03:02,829 INFO L131 PetriNetUnfolder]: For 2601715/2601715 co-relation queries the response was YES. [2023-01-28 12:03:04,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904547 conditions, 137117 events. 95108/137117 cut-off events. For 2601715/2601715 co-relation queries the response was YES. Maximal size of possible extension queue 5265. Compared 1032562 event pairs, 14393 based on Foata normal form. 692/137809 useless extension candidates. Maximal degree in co-relation 898360. Up to 33544 conditions per place. [2023-01-28 12:03:05,220 INFO L137 encePairwiseOnDemand]: 217/228 looper letters, 2200 selfloop transitions, 1841 changer transitions 0/4041 dead transitions. [2023-01-28 12:03:05,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 4041 transitions, 65628 flow [2023-01-28 12:03:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 12:03:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 12:03:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1267 transitions. [2023-01-28 12:03:05,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50518341307815 [2023-01-28 12:03:05,223 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1267 transitions. [2023-01-28 12:03:05,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1267 transitions. [2023-01-28 12:03:05,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:05,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1267 transitions. [2023-01-28 12:03:05,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 115.18181818181819) internal successors, (1267), 11 states have internal predecessors, (1267), 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 12:03:05,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 12:03:05,229 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 228.0) internal successors, (2736), 12 states have internal predecessors, (2736), 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 12:03:05,229 INFO L175 Difference]: Start difference. First operand has 160 places, 1910 transitions, 27290 flow. Second operand 11 states and 1267 transitions. [2023-01-28 12:03:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 4041 transitions, 65628 flow [2023-01-28 12:05:00,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 4041 transitions, 64116 flow, removed 756 selfloop flow, removed 0 redundant places. [2023-01-28 12:05:00,198 INFO L231 Difference]: Finished difference. Result has 178 places, 3330 transitions, 56711 flow [2023-01-28 12:05:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=26670, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=56711, PETRI_PLACES=178, PETRI_TRANSITIONS=3330} [2023-01-28 12:05:00,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2023-01-28 12:05:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 3330 transitions, 56711 flow [2023-01-28 12:05:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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 12:05:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:05:00,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:05:00,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash 464010053, now seen corresponding path program 1 times [2023-01-28 12:05:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687778450] [2023-01-28 12:05:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:00,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687778450] [2023-01-28 12:05:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687778450] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:00,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:05:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096900478] [2023-01-28 12:05:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:00,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:05:00,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:05:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:05:00,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 12:05:00,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 3330 transitions, 56711 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 12:05:00,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:00,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 12:05:00,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:06:01,296 INFO L130 PetriNetUnfolder]: 93668/139966 cut-off events. [2023-01-28 12:06:01,296 INFO L131 PetriNetUnfolder]: For 3464153/3474517 co-relation queries the response was YES. [2023-01-28 12:06:02,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024768 conditions, 139966 events. 93668/139966 cut-off events. For 3464153/3474517 co-relation queries the response was YES. Maximal size of possible extension queue 6429. Compared 1167822 event pairs, 12818 based on Foata normal form. 11190/150018 useless extension candidates. Maximal degree in co-relation 1018090. Up to 53358 conditions per place. [2023-01-28 12:06:03,555 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 2366 selfloop transitions, 1563 changer transitions 117/4123 dead transitions. [2023-01-28 12:06:03,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 4123 transitions, 76472 flow [2023-01-28 12:06:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:06:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:06:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 595 transitions. [2023-01-28 12:06:03,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2023-01-28 12:06:03,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 595 transitions. [2023-01-28 12:06:03,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 595 transitions. [2023-01-28 12:06:03,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:03,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 595 transitions. [2023-01-28 12:06:03,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 12:06:03,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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 12:06:03,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 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 12:06:03,559 INFO L175 Difference]: Start difference. First operand has 178 places, 3330 transitions, 56711 flow. Second operand 5 states and 595 transitions. [2023-01-28 12:06:03,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 4123 transitions, 76472 flow [2023-01-28 12:10:11,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 4123 transitions, 76192 flow, removed 140 selfloop flow, removed 0 redundant places. [2023-01-28 12:10:11,365 INFO L231 Difference]: Finished difference. Result has 185 places, 3306 transitions, 61231 flow [2023-01-28 12:10:11,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=55605, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61231, PETRI_PLACES=185, PETRI_TRANSITIONS=3306} [2023-01-28 12:10:11,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2023-01-28 12:10:11,369 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 3306 transitions, 61231 flow [2023-01-28 12:10:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 12:10:11,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:11,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:11,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 12:10:11,369 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 12:10:11,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1599797733, now seen corresponding path program 2 times [2023-01-28 12:10:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783060108] [2023-01-28 12:10:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:11,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783060108] [2023-01-28 12:10:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783060108] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:10:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:10:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:10:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223651615] [2023-01-28 12:10:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:10:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:10:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:10:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:10:11,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 228 [2023-01-28 12:10:11,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 3306 transitions, 61231 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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 12:10:11,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:11,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 228 [2023-01-28 12:10:11,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:11:24,307 INFO L130 PetriNetUnfolder]: 108959/164710 cut-off events. [2023-01-28 12:11:24,308 INFO L131 PetriNetUnfolder]: For 4904776/4916772 co-relation queries the response was YES. [2023-01-28 12:11:26,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319725 conditions, 164710 events. 108959/164710 cut-off events. For 4904776/4916772 co-relation queries the response was YES. Maximal size of possible extension queue 7873. Compared 1428522 event pairs, 18437 based on Foata normal form. 14796/177833 useless extension candidates. Maximal degree in co-relation 1311680. Up to 70043 conditions per place. [2023-01-28 12:11:26,820 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 1976 selfloop transitions, 2661 changer transitions 88/4802 dead transitions. [2023-01-28 12:11:26,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 4802 transitions, 96969 flow [2023-01-28 12:11:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:11:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:11:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2023-01-28 12:11:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2023-01-28 12:11:26,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2023-01-28 12:11:26,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2023-01-28 12:11:26,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:11:26,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2023-01-28 12:11:26,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 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 12:11:26,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 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 12:11:26,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 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 12:11:26,853 INFO L175 Difference]: Start difference. First operand has 185 places, 3306 transitions, 61231 flow. Second operand 6 states and 711 transitions. [2023-01-28 12:11:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 4802 transitions, 96969 flow Received shutdown request... [2023-01-28 12:15:26,608 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:15:26,887 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 12:15:26,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 12:15:26,888 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 12:15:26,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 12:15:26,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 12:15:26,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 12:15:26,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 12:15:26,889 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1] [2023-01-28 12:15:26,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:15:26,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:15:26,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:15:26 BasicIcfg [2023-01-28 12:15:26,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:15:26,893 INFO L158 Benchmark]: Toolchain (without parser) took 842372.19ms. Allocated memory was 492.8MB in the beginning and 14.8GB in the end (delta: 14.3GB). Free memory was 445.1MB in the beginning and 11.0GB in the end (delta: -10.5GB). Peak memory consumption was 8.9GB. Max. memory is 16.0GB. [2023-01-28 12:15:26,893 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 323.0MB. Free memory is still 272.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:15:26,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.81ms. Allocated memory is still 492.8MB. Free memory was 444.7MB in the beginning and 433.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:15:26,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.57ms. Allocated memory is still 492.8MB. Free memory was 433.0MB in the beginning and 431.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:15:26,894 INFO L158 Benchmark]: Boogie Preprocessor took 18.48ms. Allocated memory is still 492.8MB. Free memory was 431.3MB in the beginning and 430.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:15:26,894 INFO L158 Benchmark]: RCFGBuilder took 419.80ms. Allocated memory is still 492.8MB. Free memory was 430.1MB in the beginning and 410.4MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 12:15:26,894 INFO L158 Benchmark]: TraceAbstraction took 841708.04ms. Allocated memory was 492.8MB in the beginning and 14.8GB in the end (delta: 14.3GB). Free memory was 409.6MB in the beginning and 11.0GB in the end (delta: -10.6GB). Peak memory consumption was 8.9GB. Max. memory is 16.0GB. [2023-01-28 12:15:26,895 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 323.0MB. Free memory is still 272.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 181.81ms. Allocated memory is still 492.8MB. Free memory was 444.7MB in the beginning and 433.4MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.57ms. Allocated memory is still 492.8MB. Free memory was 433.0MB in the beginning and 431.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.48ms. Allocated memory is still 492.8MB. Free memory was 431.3MB in the beginning and 430.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 419.80ms. Allocated memory is still 492.8MB. Free memory was 430.1MB in the beginning and 410.4MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 841708.04ms. Allocated memory was 492.8MB in the beginning and 14.8GB in the end (delta: 14.3GB). Free memory was 409.6MB in the beginning and 11.0GB in the end (delta: -10.6GB). Peak memory consumption was 8.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 120 PlacesBefore, 42 PlacesAfterwards, 117 TransitionsBefore, 33 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 95 TotalNumberOfCompositions, 3486 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2642, independent: 2580, independent conditional: 0, independent unconditional: 2580, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 967, independent: 955, independent conditional: 0, independent unconditional: 955, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2642, independent: 1625, independent conditional: 0, independent unconditional: 1625, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 967, unknown conditional: 0, unknown unconditional: 967] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 156 locations, 5 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: 841.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 834.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 1193 SdHoareTripleChecker+Valid, 23.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1193 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 22.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4273 IncrementalHoareTripleChecker+Invalid, 4406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 31 mSDtfsCounter, 4273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61231occurred in iteration=8, InterpolantAutomatonStates: 95, 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, 3.2s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 336 ConstructedInterpolants, 11 QuantifiedInterpolants, 3076 SizeOfPredicates, 17 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 6/12 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 could not prove your program: Timeout Completed graceful shutdown