/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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:01:54,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:01:54,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:01:54,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:01:54,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:01:54,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:01:54,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:01:54,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:01:54,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:01:54,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:01:54,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:01:54,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:01:54,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:01:54,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:01:54,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:01:54,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:01:54,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:01:54,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:01:54,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:01:54,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:01:54,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:01:54,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:01:54,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:01:54,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:01:54,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 07:01:54,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:01:54,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:01:54,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:01:54,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:01:54,952 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:01:54,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:01:54,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:01:54,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:01:54,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:01:54,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:01:54,953 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:01:54,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:01:54,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:01:54,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:54,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:01:54,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:01:54,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:01:55,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:01:55,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:01:55,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:01:55,222 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:01:55,222 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:01:55,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:56,132 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:01:56,348 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:01:56,349 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:56,365 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc5098a9/ee39f25637214d68bfed2f07c971f123/FLAGcfe43e7ef [2023-01-28 07:01:56,376 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc5098a9/ee39f25637214d68bfed2f07c971f123 [2023-01-28 07:01:56,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:01:56,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:01:56,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:56,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:01:56,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:01:56,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f3cfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56, skipping insertion in model container [2023-01-28 07:01:56,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:01:56,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:01:56,560 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:01:56,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:56,707 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:01:56,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-28 07:01:56,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:01:56,776 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:56,776 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:01:56,781 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:01:56,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56 WrapperNode [2023-01-28 07:01:56,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:01:56,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:56,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:01:56,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:01:56,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,830 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-01-28 07:01:56,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:01:56,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:01:56,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:01:56,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:01:56,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,856 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:01:56,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:01:56,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:01:56,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:01:56,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (1/1) ... [2023-01-28 07:01:56,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:01:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:01:56,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:01:56,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:01:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:01:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:01:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:01:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 07:01:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:01:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:01:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:01:56,943 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:01:57,090 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:01:57,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:01:57,297 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:01:57,302 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:01:57,302 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:01:57,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:57 BoogieIcfgContainer [2023-01-28 07:01:57,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:01:57,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:01:57,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:01:57,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:01:57,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:01:56" (1/3) ... [2023-01-28 07:01:57,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23543d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:57, skipping insertion in model container [2023-01-28 07:01:57,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:01:56" (2/3) ... [2023-01-28 07:01:57,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23543d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:01:57, skipping insertion in model container [2023-01-28 07:01:57,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:01:57" (3/3) ... [2023-01-28 07:01:57,313 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-28 07:01:57,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:01:57,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:01:57,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:01:57,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:01:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 216 flow [2023-01-28 07:01:57,444 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2023-01-28 07:01:57,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:57,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-01-28 07:01:57,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 98 transitions, 216 flow [2023-01-28 07:01:57,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 80 transitions, 172 flow [2023-01-28 07:01:57,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:01:57,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 80 transitions, 172 flow [2023-01-28 07:01:57,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 80 transitions, 172 flow [2023-01-28 07:01:57,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 80 transitions, 172 flow [2023-01-28 07:01:57,503 INFO L130 PetriNetUnfolder]: 1/80 cut-off events. [2023-01-28 07:01:57,503 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:57,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-01-28 07:01:57,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 1542 [2023-01-28 07:01:58,888 INFO L134 LiptonReduction]: Checked pairs total: 2424 [2023-01-28 07:01:58,888 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-01-28 07:01:58,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:01:58,910 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;@385ae877, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:01:58,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 07:01:58,916 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-01-28 07:01:58,916 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:01:58,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:58,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:58,918 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 07:01:58,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1184454526, now seen corresponding path program 1 times [2023-01-28 07:01:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:58,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403683065] [2023-01-28 07:01:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:01:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:01:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:01:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403683065] [2023-01-28 07:01:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403683065] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:01:59,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:01:59,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:01:59,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423767450] [2023-01-28 07:01:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:01:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:01:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:01:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:01:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:01:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:01:59,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:59,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:01:59,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:01:59,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:01:59,769 INFO L130 PetriNetUnfolder]: 2019/2943 cut-off events. [2023-01-28 07:01:59,769 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-28 07:01:59,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 2943 events. 2019/2943 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13535 event pairs, 796 based on Foata normal form. 109/3052 useless extension candidates. Maximal degree in co-relation 6074. Up to 1819 conditions per place. [2023-01-28 07:01:59,825 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 30 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-01-28 07:01:59,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2023-01-28 07:01:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:01:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:01:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-01-28 07:01:59,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720164609053497 [2023-01-28 07:01:59,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-01-28 07:01:59,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-01-28 07:01:59,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:01:59,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-01-28 07:01:59,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:59,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:59,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:59,849 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 278 transitions. [2023-01-28 07:01:59,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2023-01-28 07:01:59,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 07:01:59,854 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 102 flow [2023-01-28 07:01:59,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-01-28 07:01:59,860 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-01-28 07:01:59,860 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 102 flow [2023-01-28 07:01:59,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:01:59,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:01:59,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:01:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:01:59,862 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 07:01:59,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:01:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616182, now seen corresponding path program 1 times [2023-01-28 07:01:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:01:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575720566] [2023-01-28 07:01:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:01:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:01:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:00,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575720566] [2023-01-28 07:02:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575720566] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:00,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:00,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:00,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722503630] [2023-01-28 07:02:00,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:00,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:00,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:00,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:00,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:00,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:00,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:00,253 INFO L130 PetriNetUnfolder]: 1886/2759 cut-off events. [2023-01-28 07:02:00,254 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2023-01-28 07:02:00,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7639 conditions, 2759 events. 1886/2759 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12651 event pairs, 269 based on Foata normal form. 33/2792 useless extension candidates. Maximal degree in co-relation 7627. Up to 1394 conditions per place. [2023-01-28 07:02:00,267 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-01-28 07:02:00,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 260 flow [2023-01-28 07:02:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2023-01-28 07:02:00,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2023-01-28 07:02:00,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2023-01-28 07:02:00,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2023-01-28 07:02:00,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:00,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2023-01-28 07:02:00,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,273 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,273 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 102 flow. Second operand 4 states and 363 transitions. [2023-01-28 07:02:00,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 260 flow [2023-01-28 07:02:00,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:00,281 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-01-28 07:02:00,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-01-28 07:02:00,282 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-01-28 07:02:00,282 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-01-28 07:02:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:00,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:00,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:02:00,282 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 07:02:00,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1936616027, now seen corresponding path program 1 times [2023-01-28 07:02:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39101287] [2023-01-28 07:02:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39101287] [2023-01-28 07:02:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39101287] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777326136] [2023-01-28 07:02:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:00,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:00,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:00,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:00,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:00,620 INFO L130 PetriNetUnfolder]: 1806/2649 cut-off events. [2023-01-28 07:02:00,621 INFO L131 PetriNetUnfolder]: For 2734/2734 co-relation queries the response was YES. [2023-01-28 07:02:00,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 2649 events. 1806/2649 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11781 event pairs, 251 based on Foata normal form. 12/2661 useless extension candidates. Maximal degree in co-relation 8036. Up to 1306 conditions per place. [2023-01-28 07:02:00,634 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 40 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-01-28 07:02:00,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 358 flow [2023-01-28 07:02:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-28 07:02:00,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632716049382716 [2023-01-28 07:02:00,636 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-28 07:02:00,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-28 07:02:00,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:00,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-28 07:02:00,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,639 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 4 states and 365 transitions. [2023-01-28 07:02:00,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 358 flow [2023-01-28 07:02:00,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:00,644 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 274 flow [2023-01-28 07:02:00,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-01-28 07:02:00,645 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-01-28 07:02:00,648 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 274 flow [2023-01-28 07:02:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:00,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:00,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:02:00,649 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 07:02:00,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -481665748, now seen corresponding path program 1 times [2023-01-28 07:02:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:00,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255199110] [2023-01-28 07:02:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:00,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255199110] [2023-01-28 07:02:00,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255199110] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:00,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:00,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:02:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100188466] [2023-01-28 07:02:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:00,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:02:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:02:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:02:00,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 162 [2023-01-28 07:02:00,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:00,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 162 [2023-01-28 07:02:00,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:00,955 INFO L130 PetriNetUnfolder]: 1401/2161 cut-off events. [2023-01-28 07:02:00,956 INFO L131 PetriNetUnfolder]: For 4541/4592 co-relation queries the response was YES. [2023-01-28 07:02:00,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 2161 events. 1401/2161 cut-off events. For 4541/4592 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10627 event pairs, 665 based on Foata normal form. 61/2153 useless extension candidates. Maximal degree in co-relation 7498. Up to 1660 conditions per place. [2023-01-28 07:02:00,967 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 45 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-01-28 07:02:00,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 474 flow [2023-01-28 07:02:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-01-28 07:02:00,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090534979423868 [2023-01-28 07:02:00,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-01-28 07:02:00,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-01-28 07:02:00,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:00,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-01-28 07:02:00,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,975 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 274 flow. Second operand 3 states and 296 transitions. [2023-01-28 07:02:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 474 flow [2023-01-28 07:02:00,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:00,984 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 288 flow [2023-01-28 07:02:00,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 07:02:00,986 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-01-28 07:02:00,986 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 288 flow [2023-01-28 07:02:00,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:00,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:00,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:02:00,987 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 07:02:00,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1367333638, now seen corresponding path program 1 times [2023-01-28 07:02:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:00,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204188050] [2023-01-28 07:02:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204188050] [2023-01-28 07:02:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204188050] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973184999] [2023-01-28 07:02:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:01,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:01,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:01,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:01,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:01,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:01,269 INFO L130 PetriNetUnfolder]: 1673/2462 cut-off events. [2023-01-28 07:02:01,269 INFO L131 PetriNetUnfolder]: For 5691/5691 co-relation queries the response was YES. [2023-01-28 07:02:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2462 events. 1673/2462 cut-off events. For 5691/5691 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11107 event pairs, 269 based on Foata normal form. 8/2470 useless extension candidates. Maximal degree in co-relation 8998. Up to 1319 conditions per place. [2023-01-28 07:02:01,281 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 50 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2023-01-28 07:02:01,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 650 flow [2023-01-28 07:02:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-01-28 07:02:01,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725308641975309 [2023-01-28 07:02:01,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-01-28 07:02:01,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-01-28 07:02:01,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:01,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-01-28 07:02:01,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,286 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 288 flow. Second operand 4 states and 371 transitions. [2023-01-28 07:02:01,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 650 flow [2023-01-28 07:02:01,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:01,298 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 534 flow [2023-01-28 07:02:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=534, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-01-28 07:02:01,300 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-01-28 07:02:01,300 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 534 flow [2023-01-28 07:02:01,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:01,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:01,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:02:01,300 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 07:02:01,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1279001014, now seen corresponding path program 1 times [2023-01-28 07:02:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:01,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138597449] [2023-01-28 07:02:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:01,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138597449] [2023-01-28 07:02:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138597449] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877791817] [2023-01-28 07:02:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:01,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:01,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:01,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:01,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:01,636 INFO L130 PetriNetUnfolder]: 1913/2858 cut-off events. [2023-01-28 07:02:01,636 INFO L131 PetriNetUnfolder]: For 10953/10953 co-relation queries the response was YES. [2023-01-28 07:02:01,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 2858 events. 1913/2858 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13572 event pairs, 446 based on Foata normal form. 36/2894 useless extension candidates. Maximal degree in co-relation 11212. Up to 1248 conditions per place. [2023-01-28 07:02:01,656 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 51 selfloop transitions, 26 changer transitions 3/80 dead transitions. [2023-01-28 07:02:01,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 813 flow [2023-01-28 07:02:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-01-28 07:02:01,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2023-01-28 07:02:01,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-01-28 07:02:01,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-01-28 07:02:01,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:01,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-01-28 07:02:01,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 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 07:02:01,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,660 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 534 flow. Second operand 4 states and 372 transitions. [2023-01-28 07:02:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 813 flow [2023-01-28 07:02:01,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 80 transitions, 813 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:01,671 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 654 flow [2023-01-28 07:02:01,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=654, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-01-28 07:02:01,673 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-01-28 07:02:01,673 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 654 flow [2023-01-28 07:02:01,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:01,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:02:01,673 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 07:02:01,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash 561540036, now seen corresponding path program 1 times [2023-01-28 07:02:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:01,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807244134] [2023-01-28 07:02:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:01,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807244134] [2023-01-28 07:02:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807244134] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:01,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:01,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:01,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330200670] [2023-01-28 07:02:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:01,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 162 [2023-01-28 07:02:01,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:01,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:01,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 162 [2023-01-28 07:02:01,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:02,040 INFO L130 PetriNetUnfolder]: 2183/3389 cut-off events. [2023-01-28 07:02:02,040 INFO L131 PetriNetUnfolder]: For 17520/17575 co-relation queries the response was YES. [2023-01-28 07:02:02,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 3389 events. 2183/3389 cut-off events. For 17520/17575 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18058 event pairs, 565 based on Foata normal form. 84/3427 useless extension candidates. Maximal degree in co-relation 13776. Up to 1548 conditions per place. [2023-01-28 07:02:02,054 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 48 selfloop transitions, 8 changer transitions 21/82 dead transitions. [2023-01-28 07:02:02,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 1046 flow [2023-01-28 07:02:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2023-01-28 07:02:02,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2023-01-28 07:02:02,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2023-01-28 07:02:02,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2023-01-28 07:02:02,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:02,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2023-01-28 07:02:02,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,058 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 654 flow. Second operand 4 states and 381 transitions. [2023-01-28 07:02:02,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 1046 flow [2023-01-28 07:02:02,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 1036 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:02,076 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 525 flow [2023-01-28 07:02:02,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-01-28 07:02:02,076 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-01-28 07:02:02,076 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 525 flow [2023-01-28 07:02:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:02,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:02:02,077 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 07:02:02,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1176329720, now seen corresponding path program 1 times [2023-01-28 07:02:02,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:02,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496617298] [2023-01-28 07:02:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496617298] [2023-01-28 07:02:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496617298] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:02,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:02,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334789328] [2023-01-28 07:02:02,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:02,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:02,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:02,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:02,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:02,359 INFO L130 PetriNetUnfolder]: 1459/2232 cut-off events. [2023-01-28 07:02:02,359 INFO L131 PetriNetUnfolder]: For 11216/11216 co-relation queries the response was YES. [2023-01-28 07:02:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9127 conditions, 2232 events. 1459/2232 cut-off events. For 11216/11216 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10739 event pairs, 356 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 9094. Up to 1124 conditions per place. [2023-01-28 07:02:02,366 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 42 selfloop transitions, 18 changer transitions 4/64 dead transitions. [2023-01-28 07:02:02,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 767 flow [2023-01-28 07:02:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-01-28 07:02:02,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632716049382716 [2023-01-28 07:02:02,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-01-28 07:02:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-01-28 07:02:02,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:02,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-01-28 07:02:02,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,369 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,369 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 525 flow. Second operand 4 states and 365 transitions. [2023-01-28 07:02:02,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 767 flow [2023-01-28 07:02:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 701 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-28 07:02:02,379 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 540 flow [2023-01-28 07:02:02,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-01-28 07:02:02,379 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-01-28 07:02:02,379 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 540 flow [2023-01-28 07:02:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:02,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:02:02,380 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 07:02:02,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash 542011896, now seen corresponding path program 2 times [2023-01-28 07:02:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684045161] [2023-01-28 07:02:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684045161] [2023-01-28 07:02:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684045161] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:02,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977571807] [2023-01-28 07:02:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:02,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 07:02:02,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:02,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 07:02:02,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:02,610 INFO L130 PetriNetUnfolder]: 1127/1853 cut-off events. [2023-01-28 07:02:02,611 INFO L131 PetriNetUnfolder]: For 11094/11200 co-relation queries the response was YES. [2023-01-28 07:02:02,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1853 events. 1127/1853 cut-off events. For 11094/11200 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10230 event pairs, 335 based on Foata normal form. 111/1930 useless extension candidates. Maximal degree in co-relation 7223. Up to 1213 conditions per place. [2023-01-28 07:02:02,617 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 66 selfloop transitions, 9 changer transitions 26/110 dead transitions. [2023-01-28 07:02:02,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 1562 flow [2023-01-28 07:02:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2023-01-28 07:02:02,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728395061728395 [2023-01-28 07:02:02,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2023-01-28 07:02:02,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2023-01-28 07:02:02,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:02,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2023-01-28 07:02:02,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,622 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 540 flow. Second operand 5 states and 464 transitions. [2023-01-28 07:02:02,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 1562 flow [2023-01-28 07:02:02,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 110 transitions, 1502 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:02,632 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 585 flow [2023-01-28 07:02:02,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-01-28 07:02:02,632 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2023-01-28 07:02:02,632 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 585 flow [2023-01-28 07:02:02,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:02,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:02:02,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 07:02:02,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 68625228, now seen corresponding path program 1 times [2023-01-28 07:02:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344273217] [2023-01-28 07:02:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344273217] [2023-01-28 07:02:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344273217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:02,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:02,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948034205] [2023-01-28 07:02:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:02,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:02,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:02,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 07:02:02,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:02,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 07:02:02,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:02,913 INFO L130 PetriNetUnfolder]: 1076/1835 cut-off events. [2023-01-28 07:02:02,913 INFO L131 PetriNetUnfolder]: For 10006/10344 co-relation queries the response was YES. [2023-01-28 07:02:02,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9297 conditions, 1835 events. 1076/1835 cut-off events. For 10006/10344 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10774 event pairs, 83 based on Foata normal form. 166/1971 useless extension candidates. Maximal degree in co-relation 9260. Up to 1148 conditions per place. [2023-01-28 07:02:02,920 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 82 selfloop transitions, 17 changer transitions 36/144 dead transitions. [2023-01-28 07:02:02,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 144 transitions, 2035 flow [2023-01-28 07:02:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2023-01-28 07:02:02,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-28 07:02:02,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2023-01-28 07:02:02,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2023-01-28 07:02:02,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:02,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2023-01-28 07:02:02,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,925 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 585 flow. Second operand 7 states and 648 transitions. [2023-01-28 07:02:02,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 144 transitions, 2035 flow [2023-01-28 07:02:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 144 transitions, 1962 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:02,936 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 680 flow [2023-01-28 07:02:02,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-01-28 07:02:02,937 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2023-01-28 07:02:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 680 flow [2023-01-28 07:02:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:02,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:02,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:02,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:02:02,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 07:02:02,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1838314156, now seen corresponding path program 1 times [2023-01-28 07:02:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294204502] [2023-01-28 07:02:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:03,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:03,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294204502] [2023-01-28 07:02:03,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294204502] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:03,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:03,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:02:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196785723] [2023-01-28 07:02:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:03,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:02:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:02:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:02:03,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 07:02:03,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:03,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 07:02:03,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:03,238 INFO L130 PetriNetUnfolder]: 943/1669 cut-off events. [2023-01-28 07:02:03,238 INFO L131 PetriNetUnfolder]: For 9413/9990 co-relation queries the response was YES. [2023-01-28 07:02:03,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10209 conditions, 1669 events. 943/1669 cut-off events. For 9413/9990 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10087 event pairs, 24 based on Foata normal form. 192/1833 useless extension candidates. Maximal degree in co-relation 10169. Up to 1021 conditions per place. [2023-01-28 07:02:03,244 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 72 selfloop transitions, 13 changer transitions 75/168 dead transitions. [2023-01-28 07:02:03,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 168 transitions, 2351 flow [2023-01-28 07:02:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 07:02:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 07:02:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 832 transitions. [2023-01-28 07:02:03,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706447187928669 [2023-01-28 07:02:03,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 832 transitions. [2023-01-28 07:02:03,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 832 transitions. [2023-01-28 07:02:03,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:03,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 832 transitions. [2023-01-28 07:02:03,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.44444444444444) internal successors, (832), 9 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,249 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,249 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 680 flow. Second operand 9 states and 832 transitions. [2023-01-28 07:02:03,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 168 transitions, 2351 flow [2023-01-28 07:02:03,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 2306 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-28 07:02:03,271 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 669 flow [2023-01-28 07:02:03,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-01-28 07:02:03,272 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2023-01-28 07:02:03,272 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 669 flow [2023-01-28 07:02:03,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:03,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:03,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:02:03,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 07:02:03,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1510454651, now seen corresponding path program 1 times [2023-01-28 07:02:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736809148] [2023-01-28 07:02:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:03,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:03,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736809148] [2023-01-28 07:02:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736809148] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:03,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:03,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:02:03,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779563185] [2023-01-28 07:02:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:03,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:03,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:03,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:03,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:03,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 669 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:03,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:03,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:03,480 INFO L130 PetriNetUnfolder]: 569/1004 cut-off events. [2023-01-28 07:02:03,480 INFO L131 PetriNetUnfolder]: For 8555/8555 co-relation queries the response was YES. [2023-01-28 07:02:03,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 1004 events. 569/1004 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4798 event pairs, 63 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 6256. Up to 468 conditions per place. [2023-01-28 07:02:03,484 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 53 selfloop transitions, 16 changer transitions 65/134 dead transitions. [2023-01-28 07:02:03,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 134 transitions, 1723 flow [2023-01-28 07:02:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:02:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:02:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-01-28 07:02:03,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565843621399177 [2023-01-28 07:02:03,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-01-28 07:02:03,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-01-28 07:02:03,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:03,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-01-28 07:02:03,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,488 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,488 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 669 flow. Second operand 6 states and 541 transitions. [2023-01-28 07:02:03,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 134 transitions, 1723 flow [2023-01-28 07:02:03,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 1395 flow, removed 118 selfloop flow, removed 9 redundant places. [2023-01-28 07:02:03,506 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 532 flow [2023-01-28 07:02:03,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-01-28 07:02:03,506 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-01-28 07:02:03,506 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 532 flow [2023-01-28 07:02:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:03,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:03,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:02:03,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 07:02:03,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash 625563137, now seen corresponding path program 2 times [2023-01-28 07:02:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:03,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425174190] [2023-01-28 07:02:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:03,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:03,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425174190] [2023-01-28 07:02:03,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425174190] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:03,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:03,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:02:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343829227] [2023-01-28 07:02:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:02:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:02:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:02:03,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 162 [2023-01-28 07:02:03,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:03,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 162 [2023-01-28 07:02:03,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:03,694 INFO L130 PetriNetUnfolder]: 225/431 cut-off events. [2023-01-28 07:02:03,694 INFO L131 PetriNetUnfolder]: For 2535/2640 co-relation queries the response was YES. [2023-01-28 07:02:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 431 events. 225/431 cut-off events. For 2535/2640 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1871 event pairs, 12 based on Foata normal form. 55/476 useless extension candidates. Maximal degree in co-relation 2217. Up to 140 conditions per place. [2023-01-28 07:02:03,695 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 21 selfloop transitions, 17 changer transitions 45/85 dead transitions. [2023-01-28 07:02:03,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 1116 flow [2023-01-28 07:02:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:02:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:02:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 721 transitions. [2023-01-28 07:02:03,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563271604938271 [2023-01-28 07:02:03,697 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 721 transitions. [2023-01-28 07:02:03,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 721 transitions. [2023-01-28 07:02:03,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:03,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 721 transitions. [2023-01-28 07:02:03,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.125) internal successors, (721), 8 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,700 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 532 flow. Second operand 8 states and 721 transitions. [2023-01-28 07:02:03,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 1116 flow [2023-01-28 07:02:03,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 971 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 07:02:03,706 INFO L231 Difference]: Finished difference. Result has 70 places, 32 transitions, 296 flow [2023-01-28 07:02:03,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=70, PETRI_TRANSITIONS=32} [2023-01-28 07:02:03,707 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2023-01-28 07:02:03,707 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 32 transitions, 296 flow [2023-01-28 07:02:03,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:03,707 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] [2023-01-28 07:02:03,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 07:02:03,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 07:02:03,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 406969096, now seen corresponding path program 1 times [2023-01-28 07:02:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233925625] [2023-01-28 07:02:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233925625] [2023-01-28 07:02:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233925625] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:03,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:03,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:03,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439253371] [2023-01-28 07:02:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:03,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:03,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:03,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 162 [2023-01-28 07:02:03,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 32 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:03,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 162 [2023-01-28 07:02:03,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:03,836 INFO L130 PetriNetUnfolder]: 44/94 cut-off events. [2023-01-28 07:02:03,836 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-01-28 07:02:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 94 events. 44/94 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 186 event pairs, 14 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 542. Up to 57 conditions per place. [2023-01-28 07:02:03,837 INFO L137 encePairwiseOnDemand]: 159/162 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-01-28 07:02:03,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 35 transitions, 380 flow [2023-01-28 07:02:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-01-28 07:02:03,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-01-28 07:02:03,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-01-28 07:02:03,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-01-28 07:02:03,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:03,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-01-28 07:02:03,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,840 INFO L175 Difference]: Start difference. First operand has 70 places, 32 transitions, 296 flow. Second operand 4 states and 342 transitions. [2023-01-28 07:02:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 35 transitions, 380 flow [2023-01-28 07:02:03,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 240 flow, removed 17 selfloop flow, removed 26 redundant places. [2023-01-28 07:02:03,841 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-28 07:02:03,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-28 07:02:03,841 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-01-28 07:02:03,841 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-28 07:02:03,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:03,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 07:02:03,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 07:02:03,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 07:02:03,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 07:02:03,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 07:02:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 07:02:03,844 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:03,846 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:02:03,846 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:02:03,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:02:03 BasicIcfg [2023-01-28 07:02:03,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:02:03,850 INFO L158 Benchmark]: Toolchain (without parser) took 7470.87ms. Allocated memory was 562.0MB in the beginning and 740.3MB in the end (delta: 178.3MB). Free memory was 521.4MB in the beginning and 384.1MB in the end (delta: 137.3MB). Peak memory consumption was 318.2MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,850 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory was 307.8MB in the beginning and 307.6MB in the end (delta: 177.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:02:03,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.21ms. Allocated memory is still 562.0MB. Free memory was 521.0MB in the beginning and 500.9MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.86ms. Allocated memory is still 562.0MB. Free memory was 500.9MB in the beginning and 498.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,851 INFO L158 Benchmark]: Boogie Preprocessor took 26.71ms. Allocated memory is still 562.0MB. Free memory was 498.8MB in the beginning and 497.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,851 INFO L158 Benchmark]: RCFGBuilder took 445.57ms. Allocated memory is still 562.0MB. Free memory was 497.4MB in the beginning and 482.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,851 INFO L158 Benchmark]: TraceAbstraction took 6544.32ms. Allocated memory was 562.0MB in the beginning and 740.3MB in the end (delta: 178.3MB). Free memory was 482.0MB in the beginning and 384.1MB in the end (delta: 97.9MB). Peak memory consumption was 278.4MB. Max. memory is 16.0GB. [2023-01-28 07:02:03,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory was 307.8MB in the beginning and 307.6MB in the end (delta: 177.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 401.21ms. Allocated memory is still 562.0MB. Free memory was 521.0MB in the beginning and 500.9MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.86ms. Allocated memory is still 562.0MB. Free memory was 500.9MB in the beginning and 498.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.71ms. Allocated memory is still 562.0MB. Free memory was 498.8MB in the beginning and 497.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 445.57ms. Allocated memory is still 562.0MB. Free memory was 497.4MB in the beginning and 482.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6544.32ms. Allocated memory was 562.0MB in the beginning and 740.3MB in the end (delta: 178.3MB). Free memory was 482.0MB in the beginning and 384.1MB in the end (delta: 97.9MB). Peak memory consumption was 278.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 92 PlacesBefore, 33 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1542 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2424 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1169, independent conditional: 0, independent unconditional: 1169, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 797, independent: 773, independent conditional: 0, independent unconditional: 773, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 127 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: 6.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 314 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 868 IncrementalHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 24 mSDtfsCounter, 868 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=680occurred in iteration=10, InterpolantAutomatonStates: 69, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 848 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:02:03,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...