/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:40:21,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:40:21,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:40:21,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:40:21,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:40:21,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:40:21,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:40:21,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:40:21,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:40:21,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:40:21,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:40:21,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:40:21,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:40:21,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:40:21,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:40:21,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:40:21,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:40:21,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:40:21,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:40:21,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:40:21,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:40:21,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:40:21,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:40:21,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:40:21,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:40:21,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:40:21,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:40:21,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:40:21,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:40:21,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:40:21,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:40:21,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:40:21,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:40:21,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:40:21,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:40:21,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:40:21,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:40:21,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:40:21,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:40:21,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:40:21,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:40:21,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:40:21,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:40:21,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:40:21,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:40:21,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:40:21,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:40:21,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:40:21,900 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:40:21,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:40:21,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:40:21,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:40:21,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:40:21,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:40:21,903 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:40:21,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:40:21,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:40:22,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:40:22,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:40:22,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:40:22,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:40:22,138 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:40:22,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2022-09-20 20:40:22,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d078c9278/8a228b941c2644b89ed170b18a2fabf2/FLAG6cc97f07b [2022-09-20 20:40:22,630 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:40:22,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2022-09-20 20:40:22,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d078c9278/8a228b941c2644b89ed170b18a2fabf2/FLAG6cc97f07b [2022-09-20 20:40:22,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d078c9278/8a228b941c2644b89ed170b18a2fabf2 [2022-09-20 20:40:22,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:40:22,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:40:22,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:40:22,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:40:23,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:40:23,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:40:22" (1/1) ... [2022-09-20 20:40:23,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe11f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23, skipping insertion in model container [2022-09-20 20:40:23,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:40:22" (1/1) ... [2022-09-20 20:40:23,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:40:23,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:40:23,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2022-09-20 20:40:23,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:40:23,465 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:40:23,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i[945,958] [2022-09-20 20:40:23,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:40:23,554 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:40:23,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23 WrapperNode [2022-09-20 20:40:23,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:40:23,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:40:23,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:40:23,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:40:23,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,618 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-09-20 20:40:23,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:40:23,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:40:23,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:40:23,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:40:23,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:40:23,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:40:23,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:40:23,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:40:23,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (1/1) ... [2022-09-20 20:40:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:40:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:40:23,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 20:40:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 20:40:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:40:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:40:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:40:23,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 20:40:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 20:40:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 20:40:23,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:40:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:40:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:40:23,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:40:23,725 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:40:23,852 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:40:23,857 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:40:24,023 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:40:24,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:40:24,029 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:40:24,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:40:24 BoogieIcfgContainer [2022-09-20 20:40:24,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:40:24,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:40:24,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:40:24,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:40:24,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:40:22" (1/3) ... [2022-09-20 20:40:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8b8929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:40:24, skipping insertion in model container [2022-09-20 20:40:24,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:40:23" (2/3) ... [2022-09-20 20:40:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8b8929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:40:24, skipping insertion in model container [2022-09-20 20:40:24,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:40:24" (3/3) ... [2022-09-20 20:40:24,039 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2022-09-20 20:40:24,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:40:24,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:40:24,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:40:24,105 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 20:40:24,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 20:40:24,176 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-09-20 20:40:24,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:40:24,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-09-20 20:40:24,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 20:40:24,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-09-20 20:40:24,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:40:24,205 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;@38f9098, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:40:24,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 20:40:24,243 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-20 20:40:24,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:40:24,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:24,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:24,245 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)] === [2022-09-20 20:40:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2022-09-20 20:40:24,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:24,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966216149] [2022-09-20 20:40:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:24,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:24,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966216149] [2022-09-20 20:40:24,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966216149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:24,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:24,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:40:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875948281] [2022-09-20 20:40:24,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:40:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:40:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:40:24,833 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 20:40:24,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:24,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:24,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 20:40:24,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:25,260 INFO L130 PetriNetUnfolder]: 290/709 cut-off events. [2022-09-20 20:40:25,261 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-09-20 20:40:25,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 709 events. 290/709 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3807 event pairs, 11 based on Foata normal form. 31/708 useless extension candidates. Maximal degree in co-relation 1200. Up to 110 conditions per place. [2022-09-20 20:40:25,271 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 21 selfloop transitions, 6 changer transitions 45/128 dead transitions. [2022-09-20 20:40:25,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 409 flow [2022-09-20 20:40:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:40:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:40:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2022-09-20 20:40:25,288 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-09-20 20:40:25,289 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2022-09-20 20:40:25,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2022-09-20 20:40:25,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:25,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2022-09-20 20:40:25,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,316 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,317 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 988 transitions. [2022-09-20 20:40:25,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 409 flow [2022-09-20 20:40:25,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 406 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 20:40:25,327 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 240 flow [2022-09-20 20:40:25,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-09-20 20:40:25,332 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-09-20 20:40:25,333 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 240 flow [2022-09-20 20:40:25,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:25,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:25,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:40:25,335 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)] === [2022-09-20 20:40:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1138626235, now seen corresponding path program 1 times [2022-09-20 20:40:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:25,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216242659] [2022-09-20 20:40:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:25,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216242659] [2022-09-20 20:40:25,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216242659] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:25,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:25,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:40:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974351851] [2022-09-20 20:40:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:40:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:40:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:40:25,497 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 20:40:25,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:25,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 20:40:25,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:25,676 INFO L130 PetriNetUnfolder]: 148/544 cut-off events. [2022-09-20 20:40:25,676 INFO L131 PetriNetUnfolder]: For 1165/1935 co-relation queries the response was YES. [2022-09-20 20:40:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 544 events. 148/544 cut-off events. For 1165/1935 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3135 event pairs, 2 based on Foata normal form. 16/538 useless extension candidates. Maximal degree in co-relation 1617. Up to 120 conditions per place. [2022-09-20 20:40:25,681 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 31/118 dead transitions. [2022-09-20 20:40:25,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 662 flow [2022-09-20 20:40:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:40:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:40:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-09-20 20:40:25,684 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8274456521739131 [2022-09-20 20:40:25,684 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-09-20 20:40:25,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-09-20 20:40:25,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:25,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-09-20 20:40:25,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 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) [2022-09-20 20:40:25,688 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 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) [2022-09-20 20:40:25,688 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 240 flow. Second operand 8 states and 609 transitions. [2022-09-20 20:40:25,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 662 flow [2022-09-20 20:40:25,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 118 transitions, 631 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-09-20 20:40:25,695 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 278 flow [2022-09-20 20:40:25,696 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-09-20 20:40:25,696 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2022-09-20 20:40:25,697 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 278 flow [2022-09-20 20:40:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:25,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:25,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:40:25,698 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)] === [2022-09-20 20:40:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1467782811, now seen corresponding path program 1 times [2022-09-20 20:40:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:25,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855115543] [2022-09-20 20:40:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855115543] [2022-09-20 20:40:25,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855115543] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:25,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:25,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:40:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641775916] [2022-09-20 20:40:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:40:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:40:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:40:25,838 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 20:40:25,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:25,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:25,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 20:40:25,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:26,038 INFO L130 PetriNetUnfolder]: 58/293 cut-off events. [2022-09-20 20:40:26,038 INFO L131 PetriNetUnfolder]: For 730/1054 co-relation queries the response was YES. [2022-09-20 20:40:26,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 293 events. 58/293 cut-off events. For 730/1054 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1282 event pairs, 11 based on Foata normal form. 9/290 useless extension candidates. Maximal degree in co-relation 841. Up to 50 conditions per place. [2022-09-20 20:40:26,042 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 7 changer transitions 31/117 dead transitions. [2022-09-20 20:40:26,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 702 flow [2022-09-20 20:40:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:40:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:40:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-09-20 20:40:26,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8068561872909699 [2022-09-20 20:40:26,046 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-09-20 20:40:26,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-09-20 20:40:26,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:26,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-09-20 20:40:26,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,054 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,054 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 278 flow. Second operand 13 states and 965 transitions. [2022-09-20 20:40:26,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 702 flow [2022-09-20 20:40:26,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 625 flow, removed 19 selfloop flow, removed 6 redundant places. [2022-09-20 20:40:26,063 INFO L231 Difference]: Finished difference. Result has 118 places, 81 transitions, 297 flow [2022-09-20 20:40:26,064 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=297, PETRI_PLACES=118, PETRI_TRANSITIONS=81} [2022-09-20 20:40:26,066 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 34 predicate places. [2022-09-20 20:40:26,066 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 81 transitions, 297 flow [2022-09-20 20:40:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:26,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:40:26,067 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)] === [2022-09-20 20:40:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 262329859, now seen corresponding path program 1 times [2022-09-20 20:40:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:26,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107614894] [2022-09-20 20:40:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107614894] [2022-09-20 20:40:26,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107614894] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:26,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:26,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:40:26,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301036903] [2022-09-20 20:40:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:26,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:40:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:40:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:40:26,233 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 20:40:26,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 81 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:26,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 20:40:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:26,431 INFO L130 PetriNetUnfolder]: 23/266 cut-off events. [2022-09-20 20:40:26,431 INFO L131 PetriNetUnfolder]: For 688/1373 co-relation queries the response was YES. [2022-09-20 20:40:26,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 266 events. 23/266 cut-off events. For 688/1373 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1381 event pairs, 8 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 709. Up to 36 conditions per place. [2022-09-20 20:40:26,433 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 8 changer transitions 22/109 dead transitions. [2022-09-20 20:40:26,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 109 transitions, 645 flow [2022-09-20 20:40:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:40:26,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:40:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 960 transitions. [2022-09-20 20:40:26,436 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.802675585284281 [2022-09-20 20:40:26,437 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 960 transitions. [2022-09-20 20:40:26,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 960 transitions. [2022-09-20 20:40:26,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:26,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 960 transitions. [2022-09-20 20:40:26,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.84615384615384) internal successors, (960), 13 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,443 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,444 INFO L175 Difference]: Start difference. First operand has 118 places, 81 transitions, 297 flow. Second operand 13 states and 960 transitions. [2022-09-20 20:40:26,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 109 transitions, 645 flow [2022-09-20 20:40:26,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 550 flow, removed 45 selfloop flow, removed 11 redundant places. [2022-09-20 20:40:26,450 INFO L231 Difference]: Finished difference. Result has 121 places, 80 transitions, 312 flow [2022-09-20 20:40:26,451 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=312, PETRI_PLACES=121, PETRI_TRANSITIONS=80} [2022-09-20 20:40:26,452 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 37 predicate places. [2022-09-20 20:40:26,452 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 80 transitions, 312 flow [2022-09-20 20:40:26,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:26,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:40:26,460 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)] === [2022-09-20 20:40:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1361839338, now seen corresponding path program 1 times [2022-09-20 20:40:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:26,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616902473] [2022-09-20 20:40:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616902473] [2022-09-20 20:40:26,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616902473] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:26,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:26,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:40:26,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865186966] [2022-09-20 20:40:26,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:26,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:40:26,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:40:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:40:26,559 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:40:26,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 80 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:26,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:40:26,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:26,795 INFO L130 PetriNetUnfolder]: 500/1268 cut-off events. [2022-09-20 20:40:26,796 INFO L131 PetriNetUnfolder]: For 701/726 co-relation queries the response was YES. [2022-09-20 20:40:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1268 events. 500/1268 cut-off events. For 701/726 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9512 event pairs, 21 based on Foata normal form. 5/1162 useless extension candidates. Maximal degree in co-relation 2584. Up to 345 conditions per place. [2022-09-20 20:40:26,808 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 15 changer transitions 6/112 dead transitions. [2022-09-20 20:40:26,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 472 flow [2022-09-20 20:40:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:40:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:40:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-09-20 20:40:26,811 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-09-20 20:40:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-09-20 20:40:26,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-09-20 20:40:26,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:26,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-09-20 20:40:26,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,817 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,817 INFO L175 Difference]: Start difference. First operand has 121 places, 80 transitions, 312 flow. Second operand 10 states and 798 transitions. [2022-09-20 20:40:26,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 472 flow [2022-09-20 20:40:26,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 431 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-09-20 20:40:26,825 INFO L231 Difference]: Finished difference. Result has 114 places, 93 transitions, 380 flow [2022-09-20 20:40:26,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2022-09-20 20:40:26,827 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-09-20 20:40:26,827 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 93 transitions, 380 flow [2022-09-20 20:40:26,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:26,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:40:26,828 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)] === [2022-09-20 20:40:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1451553419, now seen corresponding path program 1 times [2022-09-20 20:40:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028364259] [2022-09-20 20:40:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:26,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028364259] [2022-09-20 20:40:26,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028364259] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:26,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:26,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:40:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566042620] [2022-09-20 20:40:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:26,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:40:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:40:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:40:26,917 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:40:26,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 93 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:26,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:26,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:40:26,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:27,186 INFO L130 PetriNetUnfolder]: 487/1334 cut-off events. [2022-09-20 20:40:27,187 INFO L131 PetriNetUnfolder]: For 3014/3285 co-relation queries the response was YES. [2022-09-20 20:40:27,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 1334 events. 487/1334 cut-off events. For 3014/3285 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10640 event pairs, 4 based on Foata normal form. 101/1369 useless extension candidates. Maximal degree in co-relation 4456. Up to 529 conditions per place. [2022-09-20 20:40:27,198 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 24 selfloop transitions, 28 changer transitions 13/131 dead transitions. [2022-09-20 20:40:27,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 131 transitions, 746 flow [2022-09-20 20:40:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:40:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:40:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-09-20 20:40:27,201 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-09-20 20:40:27,201 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-09-20 20:40:27,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-09-20 20:40:27,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:27,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-09-20 20:40:27,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,208 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,208 INFO L175 Difference]: Start difference. First operand has 114 places, 93 transitions, 380 flow. Second operand 13 states and 1036 transitions. [2022-09-20 20:40:27,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 131 transitions, 746 flow [2022-09-20 20:40:27,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:40:27,217 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 604 flow [2022-09-20 20:40:27,217 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2022-09-20 20:40:27,220 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 47 predicate places. [2022-09-20 20:40:27,220 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 604 flow [2022-09-20 20:40:27,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:27,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:27,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:40:27,221 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)] === [2022-09-20 20:40:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 274184300, now seen corresponding path program 1 times [2022-09-20 20:40:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:27,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548665493] [2022-09-20 20:40:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:27,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548665493] [2022-09-20 20:40:27,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548665493] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:27,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:27,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:40:27,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547221143] [2022-09-20 20:40:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:27,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:40:27,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:27,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:40:27,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:40:27,369 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:40:27,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:27,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:40:27,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:27,684 INFO L130 PetriNetUnfolder]: 327/1067 cut-off events. [2022-09-20 20:40:27,684 INFO L131 PetriNetUnfolder]: For 5199/6106 co-relation queries the response was YES. [2022-09-20 20:40:27,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 1067 events. 327/1067 cut-off events. For 5199/6106 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9011 event pairs, 0 based on Foata normal form. 129/1130 useless extension candidates. Maximal degree in co-relation 4574. Up to 375 conditions per place. [2022-09-20 20:40:27,693 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 32 changer transitions 21/139 dead transitions. [2022-09-20 20:40:27,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 944 flow [2022-09-20 20:40:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:40:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:40:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-09-20 20:40:27,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-09-20 20:40:27,697 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-09-20 20:40:27,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-09-20 20:40:27,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:27,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-09-20 20:40:27,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,705 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,705 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 604 flow. Second operand 16 states and 1258 transitions. [2022-09-20 20:40:27,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 944 flow [2022-09-20 20:40:27,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 855 flow, removed 35 selfloop flow, removed 9 redundant places. [2022-09-20 20:40:27,739 INFO L231 Difference]: Finished difference. Result has 144 places, 111 transitions, 629 flow [2022-09-20 20:40:27,739 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=629, PETRI_PLACES=144, PETRI_TRANSITIONS=111} [2022-09-20 20:40:27,740 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2022-09-20 20:40:27,740 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 111 transitions, 629 flow [2022-09-20 20:40:27,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:27,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:27,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:40:27,741 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)] === [2022-09-20 20:40:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash 453170603, now seen corresponding path program 1 times [2022-09-20 20:40:27,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:27,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052182065] [2022-09-20 20:40:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:27,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052182065] [2022-09-20 20:40:27,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052182065] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:27,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:27,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:40:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132227644] [2022-09-20 20:40:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:40:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:40:27,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:40:27,873 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 20:40:27,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 111 transitions, 629 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:27,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:27,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 20:40:27,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:28,041 INFO L130 PetriNetUnfolder]: 160/838 cut-off events. [2022-09-20 20:40:28,041 INFO L131 PetriNetUnfolder]: For 2577/2661 co-relation queries the response was YES. [2022-09-20 20:40:28,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 838 events. 160/838 cut-off events. For 2577/2661 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7318 event pairs, 0 based on Foata normal form. 3/799 useless extension candidates. Maximal degree in co-relation 2729. Up to 121 conditions per place. [2022-09-20 20:40:28,046 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 16 selfloop transitions, 6 changer transitions 9/118 dead transitions. [2022-09-20 20:40:28,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 118 transitions, 713 flow [2022-09-20 20:40:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:40:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:40:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2022-09-20 20:40:28,048 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8090062111801242 [2022-09-20 20:40:28,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2022-09-20 20:40:28,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2022-09-20 20:40:28,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:28,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2022-09-20 20:40:28,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,052 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,052 INFO L175 Difference]: Start difference. First operand has 144 places, 111 transitions, 629 flow. Second operand 7 states and 521 transitions. [2022-09-20 20:40:28,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 118 transitions, 713 flow [2022-09-20 20:40:28,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 118 transitions, 616 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-09-20 20:40:28,067 INFO L231 Difference]: Finished difference. Result has 136 places, 108 transitions, 531 flow [2022-09-20 20:40:28,068 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2022-09-20 20:40:28,069 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2022-09-20 20:40:28,070 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 531 flow [2022-09-20 20:40:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:40:28,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:40:28,070 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)] === [2022-09-20 20:40:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:40:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash -114987435, now seen corresponding path program 2 times [2022-09-20 20:40:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:40:28,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911681802] [2022-09-20 20:40:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:40:28,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:40:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:40:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:40:28,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:40:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911681802] [2022-09-20 20:40:28,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911681802] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:40:28,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:40:28,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:40:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377744370] [2022-09-20 20:40:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:40:28,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:40:28,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:40:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:40:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:40:28,178 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:40:28,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 531 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:40:28,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:40:28,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:40:28,290 INFO L130 PetriNetUnfolder]: 83/451 cut-off events. [2022-09-20 20:40:28,291 INFO L131 PetriNetUnfolder]: For 656/665 co-relation queries the response was YES. [2022-09-20 20:40:28,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 451 events. 83/451 cut-off events. For 656/665 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3176 event pairs, 0 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1216. Up to 54 conditions per place. [2022-09-20 20:40:28,294 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2022-09-20 20:40:28,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 107 transitions, 557 flow [2022-09-20 20:40:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:40:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:40:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2022-09-20 20:40:28,295 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-20 20:40:28,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2022-09-20 20:40:28,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2022-09-20 20:40:28,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:40:28,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2022-09-20 20:40:28,297 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) [2022-09-20 20:40:28,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,299 INFO L175 Difference]: Start difference. First operand has 136 places, 108 transitions, 531 flow. Second operand 7 states and 539 transitions. [2022-09-20 20:40:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 107 transitions, 557 flow [2022-09-20 20:40:28,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 107 transitions, 518 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-09-20 20:40:28,305 INFO L231 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2022-09-20 20:40:28,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2022-09-20 20:40:28,306 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-09-20 20:40:28,307 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2022-09-20 20:40:28,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:40:28,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 20:40:28,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 20:40:28,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 20:40:28,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 20:40:28,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:40:28,311 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:40:28,321 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:40:28,321 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:40:28,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:40:28 BasicIcfg [2022-09-20 20:40:28,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:40:28,329 INFO L158 Benchmark]: Toolchain (without parser) took 5343.77ms. Allocated memory was 180.4MB in the beginning and 270.5MB in the end (delta: 90.2MB). Free memory was 149.7MB in the beginning and 182.0MB in the end (delta: -32.3MB). Peak memory consumption was 57.8MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,329 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:40:28,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 559.26ms. Allocated memory is still 225.4MB. Free memory was 198.0MB in the beginning and 184.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.99ms. Allocated memory is still 225.4MB. Free memory was 184.4MB in the beginning and 182.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,330 INFO L158 Benchmark]: Boogie Preprocessor took 20.51ms. Allocated memory is still 225.4MB. Free memory was 182.5MB in the beginning and 180.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,330 INFO L158 Benchmark]: RCFGBuilder took 390.83ms. Allocated memory is still 225.4MB. Free memory was 180.9MB in the beginning and 168.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,331 INFO L158 Benchmark]: TraceAbstraction took 4295.10ms. Allocated memory was 225.4MB in the beginning and 270.5MB in the end (delta: 45.1MB). Free memory was 167.8MB in the beginning and 182.0MB in the end (delta: -14.2MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. [2022-09-20 20:40:28,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 559.26ms. Allocated memory is still 225.4MB. Free memory was 198.0MB in the beginning and 184.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.99ms. Allocated memory is still 225.4MB. Free memory was 184.4MB in the beginning and 182.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.51ms. Allocated memory is still 225.4MB. Free memory was 182.5MB in the beginning and 180.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 390.83ms. Allocated memory is still 225.4MB. Free memory was 180.9MB in the beginning and 168.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4295.10ms. Allocated memory was 225.4MB in the beginning and 270.5MB in the end (delta: 45.1MB). Free memory was 167.8MB in the beginning and 182.0MB in the end (delta: -14.2MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 115 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: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 404 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 492 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 114 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=7, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 561 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 2548 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! [2022-09-20 20:40:28,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...