/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:19:54,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:19:54,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:19:54,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:19:54,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:19:54,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:19:54,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:19:54,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:19:54,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:19:54,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:19:54,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:19:54,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:19:54,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:19:54,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:19:54,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:19:54,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:19:54,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:19:54,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:19:54,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:19:54,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:19:54,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:19:54,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:19:54,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:19:54,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:19:54,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:19:54,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:19:54,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:19:54,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:19:54,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:19:54,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:19:54,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:19:54,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:19:54,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:19:54,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:19:54,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:19:54,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:19:54,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:19:54,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:19:54,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:19:54,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:19:54,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:19:54,768 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 [2023-01-27 18:19:54,800 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:19:54,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:19:54,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:19:54,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:19:54,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:19:54,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:19:54,802 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:19:54,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:19:54,803 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:19:54,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:19:54,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:19:54,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:19:54,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:19:54,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:19:54,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:19:54,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:19:54,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:19:54,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:19:54,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:19:54,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:19:54,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:19:55,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:19:55,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:19:55,018 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:19:55,018 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:19:55,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:56,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:19:56,426 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:19:56,426 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:56,439 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f580b10/c02762110720447bacc921f741352019/FLAG3823f7a6e [2023-01-27 18:19:56,450 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f580b10/c02762110720447bacc921f741352019 [2023-01-27 18:19:56,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:19:56,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:19:56,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:19:56,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:19:56,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:19:56,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59758fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56, skipping insertion in model container [2023-01-27 18:19:56,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:19:56,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:19:56,622 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-27 18:19:56,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:19:56,732 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:19:56,743 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-27 18:19:56,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:19:56,794 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:19:56,794 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:19:56,800 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:19:56,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56 WrapperNode [2023-01-27 18:19:56,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:19:56,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:19:56,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:19:56,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:19:56,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,858 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-27 18:19:56,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:19:56,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:19:56,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:19:56,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:19:56,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:19:56,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:19:56,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:19:56,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:19:56,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (1/1) ... [2023-01-27 18:19:56,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:19:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:19:56,925 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) [2023-01-27 18:19:56,935 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 [2023-01-27 18:19:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:19:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:19:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:19:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:19:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:19:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:19:56,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:19:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:19:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:19:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:19:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:19:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:19:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:19:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:19:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:19:56,966 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:19:57,117 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:19:57,119 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:19:57,306 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:19:57,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:19:57,315 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:19:57,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:19:57 BoogieIcfgContainer [2023-01-27 18:19:57,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:19:57,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:19:57,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:19:57,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:19:57,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:19:56" (1/3) ... [2023-01-27 18:19:57,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2754469b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:19:57, skipping insertion in model container [2023-01-27 18:19:57,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:56" (2/3) ... [2023-01-27 18:19:57,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2754469b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:19:57, skipping insertion in model container [2023-01-27 18:19:57,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:19:57" (3/3) ... [2023-01-27 18:19:57,327 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:57,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:19:57,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:19:57,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:19:57,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:19:57,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-01-27 18:19:57,498 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-01-27 18:19:57,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:57,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-27 18:19:57,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-01-27 18:19:57,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-01-27 18:19:57,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:19:57,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-27 18:19:57,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-01-27 18:19:57,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-01-27 18:19:57,568 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-01-27 18:19:57,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:57,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 34 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-27 18:19:57,575 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-27 18:19:59,393 INFO L134 LiptonReduction]: Checked pairs total: 1625 [2023-01-27 18:19:59,393 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-27 18:19:59,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:19:59,421 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;@d58e56f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:19:59,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:19:59,426 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-27 18:19:59,426 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:59,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:59,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:59,427 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 1 more)] === [2023-01-27 18:19:59,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash -303430256, now seen corresponding path program 1 times [2023-01-27 18:19:59,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189304664] [2023-01-27 18:19:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:00,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189304664] [2023-01-27 18:20:00,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189304664] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:00,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:20:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437234898] [2023-01-27 18:20:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:20:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:20:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:20:00,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-27 18:20:00,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-01-27 18:20:00,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:00,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-27 18:20:00,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:00,176 INFO L130 PetriNetUnfolder]: 354/582 cut-off events. [2023-01-27 18:20:00,193 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 18:20:00,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 582 events. 354/582 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2408 event pairs, 129 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1192. Up to 400 conditions per place. [2023-01-27 18:20:00,198 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-01-27 18:20:00,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 127 flow [2023-01-27 18:20:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:20:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:20:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-01-27 18:20:00,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700483091787439 [2023-01-27 18:20:00,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-01-27 18:20:00,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-01-27 18:20:00,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:00,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-01-27 18:20:00,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-01-27 18:20:00,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2023-01-27 18:20:00,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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) [2023-01-27 18:20:00,222 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 236 transitions. [2023-01-27 18:20:00,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 127 flow [2023-01-27 18:20:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:20:00,225 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-01-27 18:20:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-01-27 18:20:00,229 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-27 18:20:00,229 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-01-27 18:20:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-01-27 18:20:00,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:00,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:20:00,230 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 1 more)] === [2023-01-27 18:20:00,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:00,231 INFO L85 PathProgramCache]: Analyzing trace with hash -816403933, now seen corresponding path program 1 times [2023-01-27 18:20:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:00,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572454477] [2023-01-27 18:20:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:00,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:00,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572454477] [2023-01-27 18:20:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572454477] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:00,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:00,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:00,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899449465] [2023-01-27 18:20:00,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:00,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:00,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-27 18:20:00,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-27 18:20:00,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:00,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-27 18:20:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:00,526 INFO L130 PetriNetUnfolder]: 333/552 cut-off events. [2023-01-27 18:20:00,526 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-01-27 18:20:00,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 552 events. 333/552 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2073 event pairs, 81 based on Foata normal form. 9/561 useless extension candidates. Maximal degree in co-relation 1378. Up to 271 conditions per place. [2023-01-27 18:20:00,532 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-27 18:20:00,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 154 flow [2023-01-27 18:20:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:20:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:20:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-01-27 18:20:00,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2023-01-27 18:20:00,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-01-27 18:20:00,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-01-27 18:20:00,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:00,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-01-27 18:20:00,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-01-27 18:20:00,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:00,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:00,543 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 306 transitions. [2023-01-27 18:20:00,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 154 flow [2023-01-27 18:20:00,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:20:00,547 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 88 flow [2023-01-27 18:20:00,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-01-27 18:20:00,548 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-01-27 18:20:00,548 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 88 flow [2023-01-27 18:20:00,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-27 18:20:00,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:00,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:20:00,549 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 1 more)] === [2023-01-27 18:20:00,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -816404584, now seen corresponding path program 1 times [2023-01-27 18:20:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057574926] [2023-01-27 18:20:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057574926] [2023-01-27 18:20:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057574926] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920304327] [2023-01-27 18:20:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:00,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 138 [2023-01-27 18:20:00,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-27 18:20:00,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:00,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 138 [2023-01-27 18:20:00,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:00,829 INFO L130 PetriNetUnfolder]: 318/528 cut-off events. [2023-01-27 18:20:00,830 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-01-27 18:20:00,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 528 events. 318/528 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2044 event pairs, 43 based on Foata normal form. 3/531 useless extension candidates. Maximal degree in co-relation 1441. Up to 343 conditions per place. [2023-01-27 18:20:00,833 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-01-27 18:20:00,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 189 flow [2023-01-27 18:20:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:20:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:20:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-01-27 18:20:00,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2023-01-27 18:20:00,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-01-27 18:20:00,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-01-27 18:20:00,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:00,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-01-27 18:20:00,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-01-27 18:20:00,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:00,839 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:00,840 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 88 flow. Second operand 4 states and 309 transitions. [2023-01-27 18:20:00,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 189 flow [2023-01-27 18:20:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:20:00,844 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 105 flow [2023-01-27 18:20:00,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-01-27 18:20:00,846 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-27 18:20:00,848 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 105 flow [2023-01-27 18:20:00,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2023-01-27 18:20:00,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:00,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:20:00,849 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 1 more)] === [2023-01-27 18:20:00,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 461280613, now seen corresponding path program 1 times [2023-01-27 18:20:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64995911] [2023-01-27 18:20:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64995911] [2023-01-27 18:20:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64995911] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:01,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:01,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533605422] [2023-01-27 18:20:01,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:01,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:01,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-27 18:20:01,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 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) [2023-01-27 18:20:01,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:01,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-27 18:20:01,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:01,116 INFO L130 PetriNetUnfolder]: 359/591 cut-off events. [2023-01-27 18:20:01,116 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-01-27 18:20:01,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 591 events. 359/591 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2401 event pairs, 27 based on Foata normal form. 9/600 useless extension candidates. Maximal degree in co-relation 1737. Up to 263 conditions per place. [2023-01-27 18:20:01,122 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 38 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2023-01-27 18:20:01,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 374 flow [2023-01-27 18:20:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-01-27 18:20:01,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565217391304348 [2023-01-27 18:20:01,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-01-27 18:20:01,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-01-27 18:20:01,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:01,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-01-27 18:20:01,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 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) [2023-01-27 18:20:01,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,132 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 105 flow. Second operand 5 states and 384 transitions. [2023-01-27 18:20:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 374 flow [2023-01-27 18:20:01,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 18:20:01,137 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 259 flow [2023-01-27 18:20:01,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-01-27 18:20:01,138 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-27 18:20:01,139 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 259 flow [2023-01-27 18:20:01,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 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) [2023-01-27 18:20:01,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:01,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:01,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:20:01,139 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 1 more)] === [2023-01-27 18:20:01,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 461261083, now seen corresponding path program 2 times [2023-01-27 18:20:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:01,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623448842] [2023-01-27 18:20:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:01,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:01,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623448842] [2023-01-27 18:20:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623448842] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:01,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789944653] [2023-01-27 18:20:01,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:20:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:01,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:20:01,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:20:01,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-27 18:20:01,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:01,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:01,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-27 18:20:01,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:01,399 INFO L130 PetriNetUnfolder]: 419/704 cut-off events. [2023-01-27 18:20:01,400 INFO L131 PetriNetUnfolder]: For 1410/1410 co-relation queries the response was YES. [2023-01-27 18:20:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 704 events. 419/704 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3074 event pairs, 74 based on Foata normal form. 27/731 useless extension candidates. Maximal degree in co-relation 2444. Up to 322 conditions per place. [2023-01-27 18:20:01,404 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 27 selfloop transitions, 9 changer transitions 18/54 dead transitions. [2023-01-27 18:20:01,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 460 flow [2023-01-27 18:20:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-01-27 18:20:01,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2023-01-27 18:20:01,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-01-27 18:20:01,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-01-27 18:20:01,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:01,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-01-27 18:20:01,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 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) [2023-01-27 18:20:01,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,410 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 259 flow. Second operand 5 states and 375 transitions. [2023-01-27 18:20:01,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 460 flow [2023-01-27 18:20:01,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:20:01,416 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 185 flow [2023-01-27 18:20:01,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-01-27 18:20:01,418 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-01-27 18:20:01,419 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 185 flow [2023-01-27 18:20:01,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:20:01,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:01,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:20:01,419 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 1 more)] === [2023-01-27 18:20:01,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -417436779, now seen corresponding path program 1 times [2023-01-27 18:20:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:01,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928010313] [2023-01-27 18:20:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:01,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:01,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928010313] [2023-01-27 18:20:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928010313] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:01,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:01,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:20:01,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295794865] [2023-01-27 18:20:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:01,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:01,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-27 18:20:01,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2023-01-27 18:20:01,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:01,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-27 18:20:01,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:01,663 INFO L130 PetriNetUnfolder]: 155/303 cut-off events. [2023-01-27 18:20:01,664 INFO L131 PetriNetUnfolder]: For 1591/1628 co-relation queries the response was YES. [2023-01-27 18:20:01,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 303 events. 155/303 cut-off events. For 1591/1628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1326 event pairs, 36 based on Foata normal form. 24/314 useless extension candidates. Maximal degree in co-relation 1110. Up to 177 conditions per place. [2023-01-27 18:20:01,666 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 28 selfloop transitions, 5 changer transitions 20/57 dead transitions. [2023-01-27 18:20:01,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 536 flow [2023-01-27 18:20:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-01-27 18:20:01,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563768115942029 [2023-01-27 18:20:01,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-01-27 18:20:01,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-01-27 18:20:01,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:01,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-01-27 18:20:01,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 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) [2023-01-27 18:20:01,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:01,671 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 185 flow. Second operand 5 states and 389 transitions. [2023-01-27 18:20:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 536 flow [2023-01-27 18:20:01,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 399 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-27 18:20:01,674 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 164 flow [2023-01-27 18:20:01,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2023-01-27 18:20:01,677 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-27 18:20:01,677 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 164 flow [2023-01-27 18:20:01,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2023-01-27 18:20:01,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:01,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:01,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:20:01,678 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 1 more)] === [2023-01-27 18:20:01,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1470476291, now seen corresponding path program 1 times [2023-01-27 18:20:01,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669087734] [2023-01-27 18:20:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:01,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669087734] [2023-01-27 18:20:01,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669087734] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:01,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:01,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982975805] [2023-01-27 18:20:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:20:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:20:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:20:01,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-27 18:20:01,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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) [2023-01-27 18:20:01,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:01,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-27 18:20:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:01,921 INFO L130 PetriNetUnfolder]: 111/231 cut-off events. [2023-01-27 18:20:01,921 INFO L131 PetriNetUnfolder]: For 537/597 co-relation queries the response was YES. [2023-01-27 18:20:01,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 231 events. 111/231 cut-off events. For 537/597 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 947 event pairs, 12 based on Foata normal form. 36/258 useless extension candidates. Maximal degree in co-relation 918. Up to 129 conditions per place. [2023-01-27 18:20:01,923 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 35 selfloop transitions, 8 changer transitions 20/67 dead transitions. [2023-01-27 18:20:01,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 531 flow [2023-01-27 18:20:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:20:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:20:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-01-27 18:20:01,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2023-01-27 18:20:01,925 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-01-27 18:20:01,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-01-27 18:20:01,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:01,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-01-27 18:20:01,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 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) [2023-01-27 18:20:01,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2023-01-27 18:20:01,930 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2023-01-27 18:20:01,930 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 164 flow. Second operand 7 states and 539 transitions. [2023-01-27 18:20:01,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 531 flow [2023-01-27 18:20:01,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 525 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:20:01,934 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 216 flow [2023-01-27 18:20:01,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2023-01-27 18:20:01,934 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-01-27 18:20:01,934 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 216 flow [2023-01-27 18:20:01,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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) [2023-01-27 18:20:01,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:01,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:01,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:20:01,935 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 1 more)] === [2023-01-27 18:20:01,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash 521695694, now seen corresponding path program 1 times [2023-01-27 18:20:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730847031] [2023-01-27 18:20:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730847031] [2023-01-27 18:20:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730847031] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:02,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:02,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:20:02,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115207708] [2023-01-27 18:20:02,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:02,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:20:02,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:20:02,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:20:02,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 138 [2023-01-27 18:20:02,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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) [2023-01-27 18:20:02,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:02,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 138 [2023-01-27 18:20:02,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:02,173 INFO L130 PetriNetUnfolder]: 133/267 cut-off events. [2023-01-27 18:20:02,173 INFO L131 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2023-01-27 18:20:02,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 267 events. 133/267 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 995 event pairs, 10 based on Foata normal form. 5/272 useless extension candidates. Maximal degree in co-relation 1167. Up to 136 conditions per place. [2023-01-27 18:20:02,175 INFO L137 encePairwiseOnDemand]: 131/138 looper letters, 33 selfloop transitions, 11 changer transitions 8/52 dead transitions. [2023-01-27 18:20:02,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 446 flow [2023-01-27 18:20:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:20:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:20:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-01-27 18:20:02,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420289855072464 [2023-01-27 18:20:02,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-01-27 18:20:02,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-01-27 18:20:02,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:02,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-01-27 18:20:02,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2023-01-27 18:20:02,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:02,180 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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) [2023-01-27 18:20:02,180 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 216 flow. Second operand 5 states and 374 transitions. [2023-01-27 18:20:02,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 446 flow [2023-01-27 18:20:02,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 393 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-01-27 18:20:02,184 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 208 flow [2023-01-27 18:20:02,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-01-27 18:20:02,184 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-01-27 18:20:02,184 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 208 flow [2023-01-27 18:20:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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) [2023-01-27 18:20:02,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:20:02,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:20:02,185 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 1 more)] === [2023-01-27 18:20:02,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:20:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 849736341, now seen corresponding path program 1 times [2023-01-27 18:20:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:20:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870827293] [2023-01-27 18:20:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:20:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:20:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:20:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:20:02,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:20:02,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870827293] [2023-01-27 18:20:02,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870827293] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:20:02,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:20:02,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:20:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482334776] [2023-01-27 18:20:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:20:02,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:20:02,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:20:02,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:20:02,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:20:02,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 138 [2023-01-27 18:20:02,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-01-27 18:20:02,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:20:02,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 138 [2023-01-27 18:20:02,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:20:02,419 INFO L130 PetriNetUnfolder]: 71/169 cut-off events. [2023-01-27 18:20:02,420 INFO L131 PetriNetUnfolder]: For 455/495 co-relation queries the response was YES. [2023-01-27 18:20:02,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 169 events. 71/169 cut-off events. For 455/495 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 672 event pairs, 10 based on Foata normal form. 27/191 useless extension candidates. Maximal degree in co-relation 705. Up to 59 conditions per place. [2023-01-27 18:20:02,421 INFO L137 encePairwiseOnDemand]: 132/138 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-01-27 18:20:02,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 442 flow [2023-01-27 18:20:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:20:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:20:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2023-01-27 18:20:02,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2023-01-27 18:20:02,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2023-01-27 18:20:02,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2023-01-27 18:20:02,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:20:02,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2023-01-27 18:20:02,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2023-01-27 18:20:02,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2023-01-27 18:20:02,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 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) [2023-01-27 18:20:02,426 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 208 flow. Second operand 7 states and 525 transitions. [2023-01-27 18:20:02,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 442 flow [2023-01-27 18:20:02,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 398 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-27 18:20:02,428 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-01-27 18:20:02,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-01-27 18:20:02,429 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-01-27 18:20:02,429 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-01-27 18:20:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-01-27 18:20:02,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:20:02,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:20:02,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:20:02,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:20:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:20:02,432 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:20:02,435 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:20:02,435 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:20:02,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:20:02 BasicIcfg [2023-01-27 18:20:02,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:20:02,438 INFO L158 Benchmark]: Toolchain (without parser) took 5985.31ms. Allocated memory is still 492.8MB. Free memory was 444.4MB in the beginning and 221.8MB in the end (delta: 222.6MB). Peak memory consumption was 225.6MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,438 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory was 329.2MB in the beginning and 329.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:20:02,438 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.23ms. Allocated memory is still 492.8MB. Free memory was 444.2MB in the beginning and 424.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.72ms. Allocated memory is still 492.8MB. Free memory was 424.1MB in the beginning and 422.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,439 INFO L158 Benchmark]: Boogie Preprocessor took 31.25ms. Allocated memory is still 492.8MB. Free memory was 422.1MB in the beginning and 420.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,439 INFO L158 Benchmark]: RCFGBuilder took 427.42ms. Allocated memory is still 492.8MB. Free memory was 420.4MB in the beginning and 407.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,439 INFO L158 Benchmark]: TraceAbstraction took 5116.90ms. Allocated memory is still 492.8MB. Free memory was 406.1MB in the beginning and 221.8MB in the end (delta: 184.3MB). Peak memory consumption was 185.7MB. Max. memory is 16.0GB. [2023-01-27 18:20:02,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory was 329.2MB in the beginning and 329.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 347.23ms. Allocated memory is still 492.8MB. Free memory was 444.2MB in the beginning and 424.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.72ms. Allocated memory is still 492.8MB. Free memory was 424.1MB in the beginning and 422.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.25ms. Allocated memory is still 492.8MB. Free memory was 422.1MB in the beginning and 420.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.42ms. Allocated memory is still 492.8MB. Free memory was 420.4MB in the beginning and 407.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5116.90ms. Allocated memory is still 492.8MB. Free memory was 406.1MB in the beginning and 221.8MB in the end (delta: 184.3MB). Peak memory consumption was 185.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1625 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 906, independent: 840, independent conditional: 0, independent unconditional: 840, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 529, independent: 507, independent conditional: 0, independent unconditional: 507, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 906, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 529, unknown conditional: 0, unknown unconditional: 529] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 7 procedures, 105 locations, 4 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: 5.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 414 IncrementalHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 13 mSDtfsCounter, 414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 1.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-01-27 18:20:02,459 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...