/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:57:04,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:57:04,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:57:04,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:57:04,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:57:04,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:57:04,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:57:04,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:57:04,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:57:04,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:57:04,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:57:04,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:57:04,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:57:04,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:57:04,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:57:04,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:57:04,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:57:04,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:57:04,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:57:04,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:57:04,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:57:04,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:57:04,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:57:04,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:57:04,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:57:04,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:57:04,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:57:04,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:57:04,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:57:04,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:57:04,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:57:04,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:57:04,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:57:04,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:57:04,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:57:04,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:57:04,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:57:04,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:57:04,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:57:04,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:57:04,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:57:04,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:57:04,774 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:57:04,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:57:04,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:57:04,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:57:04,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:57:04,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:57:04,776 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:57:04,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:57:04,777 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:57:04,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:57:04,778 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:57:04,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:57:04,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:57:04,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:57:04,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:57:04,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:57:04,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:57:04,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:57:04,986 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:57:04,986 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:57:04,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-01-28 05:57:06,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:57:06,320 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:57:06,321 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-01-28 05:57:06,345 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6320126/7f78a9f0670c43bb8f692d501cf4df51/FLAG025b24ad1 [2023-01-28 05:57:06,363 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6320126/7f78a9f0670c43bb8f692d501cf4df51 [2023-01-28 05:57:06,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:57:06,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:57:06,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:57:06,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:57:06,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:57:06,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe8b4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06, skipping insertion in model container [2023-01-28 05:57:06,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:57:06,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:57:06,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-01-28 05:57:06,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:57:06,721 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:57:06,770 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-01-28 05:57:06,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:57:06,803 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:57:06,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06 WrapperNode [2023-01-28 05:57:06,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:57:06,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:57:06,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:57:06,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:57:06,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,832 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-01-28 05:57:06,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:57:06,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:57:06,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:57:06,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:57:06,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:57:06,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:57:06,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:57:06,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:57:06,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (1/1) ... [2023-01-28 05:57:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:57:06,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:06,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:57:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:57:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:57:06,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:57:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:57:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:57:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 05:57:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:57:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:57:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:57:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:57:06,899 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:57:06,994 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:57:06,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:57:07,184 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:57:07,189 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:57:07,190 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 05:57:07,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:57:07 BoogieIcfgContainer [2023-01-28 05:57:07,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:57:07,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:57:07,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:57:07,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:57:07,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:57:06" (1/3) ... [2023-01-28 05:57:07,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de693ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:57:07, skipping insertion in model container [2023-01-28 05:57:07,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:57:06" (2/3) ... [2023-01-28 05:57:07,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de693ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:57:07, skipping insertion in model container [2023-01-28 05:57:07,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:57:07" (3/3) ... [2023-01-28 05:57:07,196 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-01-28 05:57:07,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:57:07,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:57:07,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:57:07,257 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 05:57:07,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 05:57:07,342 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-28 05:57:07,343 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:57:07,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2023-01-28 05:57:07,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2023-01-28 05:57:07,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2023-01-28 05:57:07,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:57:07,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 05:57:07,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-28 05:57:07,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2023-01-28 05:57:07,379 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-01-28 05:57:07,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:57:07,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-28 05:57:07,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2023-01-28 05:57:11,366 INFO L134 LiptonReduction]: Checked pairs total: 4363 [2023-01-28 05:57:11,366 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-28 05:57:11,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:57:11,384 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;@32df237c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:57:11,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 05:57:11,389 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-01-28 05:57:11,389 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 05:57:11,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:11,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:11,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:11,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -373663314, now seen corresponding path program 1 times [2023-01-28 05:57:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:11,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589835555] [2023-01-28 05:57:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:11,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589835555] [2023-01-28 05:57:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589835555] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:57:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596380350] [2023-01-28 05:57:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:11,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:11,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:11,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 05:57:11,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:11,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 05:57:11,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:11,736 INFO L130 PetriNetUnfolder]: 219/470 cut-off events. [2023-01-28 05:57:11,736 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 05:57:11,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 470 events. 219/470 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2196 event pairs, 87 based on Foata normal form. 28/432 useless extension candidates. Maximal degree in co-relation 772. Up to 225 conditions per place. [2023-01-28 05:57:11,744 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 34 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 05:57:11,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 173 flow [2023-01-28 05:57:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-01-28 05:57:11,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-28 05:57:11,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-01-28 05:57:11,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-01-28 05:57:11,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:11,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-01-28 05:57:11,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,787 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-01-28 05:57:11,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 173 flow [2023-01-28 05:57:11,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 05:57:11,791 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-01-28 05:57:11,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-01-28 05:57:11,801 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-01-28 05:57:11,801 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-01-28 05:57:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:11,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:11,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:57:11,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:11,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2115918277, now seen corresponding path program 1 times [2023-01-28 05:57:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256407128] [2023-01-28 05:57:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:11,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256407128] [2023-01-28 05:57:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256407128] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:11,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:57:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328762281] [2023-01-28 05:57:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:11,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 224 [2023-01-28 05:57:11,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:11,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:11,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 224 [2023-01-28 05:57:11,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:12,051 INFO L130 PetriNetUnfolder]: 357/694 cut-off events. [2023-01-28 05:57:12,051 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-01-28 05:57:12,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 694 events. 357/694 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3192 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 442. Up to 347 conditions per place. [2023-01-28 05:57:12,054 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-01-28 05:57:12,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 191 flow [2023-01-28 05:57:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-01-28 05:57:12,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-28 05:57:12,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-01-28 05:57:12,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-01-28 05:57:12,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:12,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-01-28 05:57:12,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,061 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 376 transitions. [2023-01-28 05:57:12,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 191 flow [2023-01-28 05:57:12,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:12,063 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-01-28 05:57:12,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-28 05:57:12,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-28 05:57:12,064 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-01-28 05:57:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:12,065 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] [2023-01-28 05:57:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:57:12,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:12,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash 26892520, now seen corresponding path program 1 times [2023-01-28 05:57:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192400729] [2023-01-28 05:57:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192400729] [2023-01-28 05:57:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192400729] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:12,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:12,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:57:12,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979555121] [2023-01-28 05:57:12,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:12,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:12,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:12,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-01-28 05:57:12,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:12,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-01-28 05:57:12,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:12,306 INFO L130 PetriNetUnfolder]: 309/688 cut-off events. [2023-01-28 05:57:12,307 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 05:57:12,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 309/688 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3367 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 413. Up to 316 conditions per place. [2023-01-28 05:57:12,311 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 25 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-01-28 05:57:12,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 183 flow [2023-01-28 05:57:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-01-28 05:57:12,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2023-01-28 05:57:12,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-01-28 05:57:12,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-01-28 05:57:12,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:12,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-01-28 05:57:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,316 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 346 transitions. [2023-01-28 05:57:12,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 183 flow [2023-01-28 05:57:12,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:12,318 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2023-01-28 05:57:12,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-28 05:57:12,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 05:57:12,319 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2023-01-28 05:57:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:12,320 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] [2023-01-28 05:57:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:57:12,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:12,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1826989588, now seen corresponding path program 2 times [2023-01-28 05:57:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:12,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323613533] [2023-01-28 05:57:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323613533] [2023-01-28 05:57:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323613533] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:57:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502126741] [2023-01-28 05:57:12,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:57:12,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:12,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:12,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:57:12,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:57:12,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:57:12,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 05:57:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:12,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:57:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:57:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502126741] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:57:12,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:57:12,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 05:57:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238252481] [2023-01-28 05:57:12,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:57:12,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 05:57:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:12,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 05:57:12,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:57:12,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-01-28 05:57:12,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:12,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-01-28 05:57:12,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:12,794 INFO L130 PetriNetUnfolder]: 509/1236 cut-off events. [2023-01-28 05:57:12,794 INFO L131 PetriNetUnfolder]: For 350/356 co-relation queries the response was YES. [2023-01-28 05:57:12,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 1236 events. 509/1236 cut-off events. For 350/356 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6749 event pairs, 42 based on Foata normal form. 96/1274 useless extension candidates. Maximal degree in co-relation 673. Up to 246 conditions per place. [2023-01-28 05:57:12,799 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 113 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2023-01-28 05:57:12,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 147 transitions, 789 flow [2023-01-28 05:57:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:57:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:57:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1541 transitions. [2023-01-28 05:57:12,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291895604395604 [2023-01-28 05:57:12,802 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1541 transitions. [2023-01-28 05:57:12,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1541 transitions. [2023-01-28 05:57:12,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:12,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1541 transitions. [2023-01-28 05:57:12,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.53846153846153) internal successors, (1541), 13 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,810 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 224.0) internal successors, (3136), 14 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,810 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 13 states and 1541 transitions. [2023-01-28 05:57:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 147 transitions, 789 flow [2023-01-28 05:57:12,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 147 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:57:12,813 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 325 flow [2023-01-28 05:57:12,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=325, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-01-28 05:57:12,814 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2023-01-28 05:57:12,815 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 325 flow [2023-01-28 05:57:12,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:12,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:12,816 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:12,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:13,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:13,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1311970565, now seen corresponding path program 3 times [2023-01-28 05:57:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601723306] [2023-01-28 05:57:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:57:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601723306] [2023-01-28 05:57:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601723306] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:57:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649579321] [2023-01-28 05:57:13,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:57:13,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:13,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:13,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:57:13,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 05:57:13,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:57:13,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:57:13,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-28 05:57:13,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649579321] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:57:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 05:57:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19552194] [2023-01-28 05:57:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:57:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:57:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:57:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-01-28 05:57:13,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:13,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:13,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-01-28 05:57:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:13,553 INFO L130 PetriNetUnfolder]: 800/1629 cut-off events. [2023-01-28 05:57:13,553 INFO L131 PetriNetUnfolder]: For 3035/3035 co-relation queries the response was YES. [2023-01-28 05:57:13,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4715 conditions, 1629 events. 800/1629 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8057 event pairs, 161 based on Foata normal form. 0/1513 useless extension candidates. Maximal degree in co-relation 3446. Up to 652 conditions per place. [2023-01-28 05:57:13,563 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 90 selfloop transitions, 8 changer transitions 1/101 dead transitions. [2023-01-28 05:57:13,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 779 flow [2023-01-28 05:57:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:57:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:57:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-28 05:57:13,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491071428571429 [2023-01-28 05:57:13,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-28 05:57:13,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-28 05:57:13,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:13,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-28 05:57:13,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:13,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:13,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:13,571 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 325 flow. Second operand 5 states and 615 transitions. [2023-01-28 05:57:13,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 779 flow [2023-01-28 05:57:13,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-28 05:57:13,584 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 345 flow [2023-01-28 05:57:13,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-01-28 05:57:13,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-01-28 05:57:13,587 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 345 flow [2023-01-28 05:57:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:13,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:13,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:13,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 05:57:13,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:13,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:13,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1361604361, now seen corresponding path program 4 times [2023-01-28 05:57:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378102896] [2023-01-28 05:57:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:57:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378102896] [2023-01-28 05:57:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378102896] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:57:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550676589] [2023-01-28 05:57:13,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:57:13,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:13,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:13,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:13,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:57:14,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:57:14,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:57:14,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 05:57:14,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:57:14,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:57:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:57:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550676589] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:57:14,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:57:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-01-28 05:57:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130724306] [2023-01-28 05:57:14,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:57:14,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:57:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:57:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:57:14,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-28 05:57:14,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:14,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-28 05:57:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:14,280 INFO L130 PetriNetUnfolder]: 639/1480 cut-off events. [2023-01-28 05:57:14,280 INFO L131 PetriNetUnfolder]: For 3086/3104 co-relation queries the response was YES. [2023-01-28 05:57:14,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 1480 events. 639/1480 cut-off events. For 3086/3104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7912 event pairs, 118 based on Foata normal form. 46/1518 useless extension candidates. Maximal degree in co-relation 3476. Up to 310 conditions per place. [2023-01-28 05:57:14,286 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 75 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2023-01-28 05:57:14,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 737 flow [2023-01-28 05:57:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:57:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:57:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 634 transitions. [2023-01-28 05:57:14,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660714285714286 [2023-01-28 05:57:14,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 634 transitions. [2023-01-28 05:57:14,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 634 transitions. [2023-01-28 05:57:14,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:14,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 634 transitions. [2023-01-28 05:57:14,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,291 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 345 flow. Second operand 5 states and 634 transitions. [2023-01-28 05:57:14,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 737 flow [2023-01-28 05:57:14,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 737 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:57:14,295 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 389 flow [2023-01-28 05:57:14,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-01-28 05:57:14,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-28 05:57:14,297 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 389 flow [2023-01-28 05:57:14,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:14,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:14,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:14,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:14,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1041839656, now seen corresponding path program 5 times [2023-01-28 05:57:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:14,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900253719] [2023-01-28 05:57:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-28 05:57:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900253719] [2023-01-28 05:57:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900253719] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:57:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:57:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416766794] [2023-01-28 05:57:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:14,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:57:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:57:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:57:14,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-01-28 05:57:14,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:14,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-01-28 05:57:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:14,646 INFO L130 PetriNetUnfolder]: 528/1113 cut-off events. [2023-01-28 05:57:14,646 INFO L131 PetriNetUnfolder]: For 2847/2847 co-relation queries the response was YES. [2023-01-28 05:57:14,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 1113 events. 528/1113 cut-off events. For 2847/2847 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5004 event pairs, 164 based on Foata normal form. 46/1159 useless extension candidates. Maximal degree in co-relation 3272. Up to 813 conditions per place. [2023-01-28 05:57:14,650 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 54 selfloop transitions, 3 changer transitions 3/62 dead transitions. [2023-01-28 05:57:14,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 485 flow [2023-01-28 05:57:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:57:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:57:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-01-28 05:57:14,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610119047619048 [2023-01-28 05:57:14,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-01-28 05:57:14,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-01-28 05:57:14,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:14,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-01-28 05:57:14,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,653 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 389 flow. Second operand 3 states and 377 transitions. [2023-01-28 05:57:14,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 485 flow [2023-01-28 05:57:14,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 462 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-28 05:57:14,658 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 288 flow [2023-01-28 05:57:14,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-01-28 05:57:14,659 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-01-28 05:57:14,659 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 288 flow [2023-01-28 05:57:14,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:14,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:14,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:14,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:57:14,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:14,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1414803876, now seen corresponding path program 6 times [2023-01-28 05:57:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:14,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474450458] [2023-01-28 05:57:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:57:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474450458] [2023-01-28 05:57:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474450458] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:57:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571401201] [2023-01-28 05:57:14,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:57:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:14,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:14,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:57:14,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 05:57:14,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:57:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:57:14,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-01-28 05:57:15,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:57:15,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571401201] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:57:15,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:57:15,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-01-28 05:57:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432799183] [2023-01-28 05:57:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:57:15,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:57:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:57:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 05:57:15,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 05:57:15,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:15,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 05:57:15,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:15,154 INFO L130 PetriNetUnfolder]: 472/1003 cut-off events. [2023-01-28 05:57:15,154 INFO L131 PetriNetUnfolder]: For 1814/1814 co-relation queries the response was YES. [2023-01-28 05:57:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1003 events. 472/1003 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4334 event pairs, 123 based on Foata normal form. 18/1021 useless extension candidates. Maximal degree in co-relation 1477. Up to 429 conditions per place. [2023-01-28 05:57:15,193 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-01-28 05:57:15,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 580 flow [2023-01-28 05:57:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:57:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:57:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-01-28 05:57:15,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-01-28 05:57:15,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-01-28 05:57:15,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-01-28 05:57:15,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:15,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-01-28 05:57:15,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,200 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 288 flow. Second operand 6 states and 708 transitions. [2023-01-28 05:57:15,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 580 flow [2023-01-28 05:57:15,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 05:57:15,203 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 332 flow [2023-01-28 05:57:15,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-01-28 05:57:15,203 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-28 05:57:15,203 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 332 flow [2023-01-28 05:57:15,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:15,204 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:15,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:57:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:15,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:15,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2055301186, now seen corresponding path program 7 times [2023-01-28 05:57:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529031978] [2023-01-28 05:57:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:15,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 05:57:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:57:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529031978] [2023-01-28 05:57:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529031978] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:57:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450432044] [2023-01-28 05:57:15,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 05:57:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:57:15,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:57:15,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:57:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:57:15,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 05:57:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:57:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 05:57:15,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:57:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 05:57:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450432044] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:57:15,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:57:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-01-28 05:57:15,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807932467] [2023-01-28 05:57:15,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:57:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:57:15,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:57:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:57:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:57:15,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-28 05:57:15,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:57:15,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-28 05:57:15,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:57:15,887 INFO L130 PetriNetUnfolder]: 325/706 cut-off events. [2023-01-28 05:57:15,887 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-01-28 05:57:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 706 events. 325/706 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2564 event pairs, 90 based on Foata normal form. 22/728 useless extension candidates. Maximal degree in co-relation 1227. Up to 300 conditions per place. [2023-01-28 05:57:15,890 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 59 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2023-01-28 05:57:15,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 534 flow [2023-01-28 05:57:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:57:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:57:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 706 transitions. [2023-01-28 05:57:15,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252976190476191 [2023-01-28 05:57:15,892 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 706 transitions. [2023-01-28 05:57:15,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 706 transitions. [2023-01-28 05:57:15,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:57:15,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 706 transitions. [2023-01-28 05:57:15,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,896 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 332 flow. Second operand 6 states and 706 transitions. [2023-01-28 05:57:15,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 534 flow [2023-01-28 05:57:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 500 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-28 05:57:15,899 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 265 flow [2023-01-28 05:57:15,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-01-28 05:57:15,900 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-01-28 05:57:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 265 flow [2023-01-28 05:57:15,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:57:15,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:57:15,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:57:15,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 05:57:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:57:16,106 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 05:57:16,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:57:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587720, now seen corresponding path program 8 times [2023-01-28 05:57:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:57:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58656653] [2023-01-28 05:57:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:57:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:57:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 05:57:16,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 05:57:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 05:57:16,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 05:57:16,194 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 05:57:16,194 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 05:57:16,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 05:57:16,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 05:57:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 05:57:16,196 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-01-28 05:57:16,199 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:57:16,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:57:16,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:57:16 BasicIcfg [2023-01-28 05:57:16,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:57:16,257 INFO L158 Benchmark]: Toolchain (without parser) took 9891.47ms. Allocated memory was 547.4MB in the beginning and 677.4MB in the end (delta: 130.0MB). Free memory was 498.3MB in the beginning and 467.6MB in the end (delta: 30.7MB). Peak memory consumption was 162.6MB. Max. memory is 16.0GB. [2023-01-28 05:57:16,257 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 318.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:57:16,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.58ms. Allocated memory is still 547.4MB. Free memory was 497.9MB in the beginning and 471.8MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 05:57:16,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.28ms. Allocated memory is still 547.4MB. Free memory was 471.8MB in the beginning and 469.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 05:57:16,258 INFO L158 Benchmark]: Boogie Preprocessor took 16.72ms. Allocated memory is still 547.4MB. Free memory was 469.3MB in the beginning and 467.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:57:16,258 INFO L158 Benchmark]: RCFGBuilder took 341.55ms. Allocated memory is still 547.4MB. Free memory was 467.8MB in the beginning and 449.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 05:57:16,258 INFO L158 Benchmark]: TraceAbstraction took 9064.66ms. Allocated memory was 547.4MB in the beginning and 677.4MB in the end (delta: 130.0MB). Free memory was 448.9MB in the beginning and 467.6MB in the end (delta: -18.7MB). Peak memory consumption was 114.3MB. Max. memory is 16.0GB. [2023-01-28 05:57:16,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 318.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.58ms. Allocated memory is still 547.4MB. Free memory was 497.9MB in the beginning and 471.8MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.28ms. Allocated memory is still 547.4MB. Free memory was 471.8MB in the beginning and 469.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.72ms. Allocated memory is still 547.4MB. Free memory was 469.3MB in the beginning and 467.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 341.55ms. Allocated memory is still 547.4MB. Free memory was 467.8MB in the beginning and 449.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 9064.66ms. Allocated memory was 547.4MB in the beginning and 677.4MB in the end (delta: 130.0MB). Free memory was 448.9MB in the beginning and 467.6MB in the end (delta: -18.7MB). Peak memory consumption was 114.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2172, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1031, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2172, independent: 1000, independent conditional: 0, independent unconditional: 1000, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1031, unknown conditional: 0, unknown unconditional: 1031] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 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: 8.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1005 IncrementalHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 2 mSDtfsCounter, 1005 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 287 SyntacticMatches, 15 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=6, InterpolantAutomatonStates: 47, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 510 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 1264 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1392 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 273/350 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 05:57:16,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...