/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:32:23,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:32:23,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:32:23,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:32:23,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:32:23,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:32:23,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:32:23,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:32:23,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:32:23,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:32:23,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:32:23,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:32:23,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:32:23,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:32:23,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:32:23,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:32:23,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:32:23,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:32:23,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:32:23,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:32:23,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:32:23,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:32:23,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:32:23,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:32:23,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:32:23,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:32:23,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:32:23,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:32:23,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:32:23,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:32:23,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:32:23,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:32:23,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:32:23,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:32:23,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:32:23,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:32:23,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:32:23,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:32:23,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:32:23,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:32:23,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:32:23,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 23:32:23,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:32:23,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:32:23,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:32:23,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:32:23,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:32:23,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:32:23,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:32:23,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:32:23,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:32:23,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:32:23,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:32:23,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:32:23,120 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:32:23,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:32:23,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:32:23,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:32:23,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:32:23,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:32:23,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:32:23,316 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:32:23,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-09-20 23:32:23,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b826bba/d8f08833f0ba404eafad6a6e30842dd7/FLAG87fbce3c5 [2022-09-20 23:32:23,751 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:32:23,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2022-09-20 23:32:23,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b826bba/d8f08833f0ba404eafad6a6e30842dd7/FLAG87fbce3c5 [2022-09-20 23:32:23,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15b826bba/d8f08833f0ba404eafad6a6e30842dd7 [2022-09-20 23:32:23,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:32:23,774 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:32:23,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:32:23,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:32:23,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:32:23,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:32:23" (1/1) ... [2022-09-20 23:32:23,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f2dadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:23, skipping insertion in model container [2022-09-20 23:32:23,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:32:23" (1/1) ... [2022-09-20 23:32:23,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:32:23,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:32:23,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-09-20 23:32:23,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:32:23,985 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:32:24,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-09-20 23:32:24,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:32:24,016 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:32:24,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24 WrapperNode [2022-09-20 23:32:24,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:32:24,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:32:24,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:32:24,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:32:24,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,052 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 121 [2022-09-20 23:32:24,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:32:24,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:32:24,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:32:24,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:32:24,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:32:24,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:32:24,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:32:24,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:32:24,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (1/1) ... [2022-09-20 23:32:24,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:32:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:24,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 23:32:24,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 23:32:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:32:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:32:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:32:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:32:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:32:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:32:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:32:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:32:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:32:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:32:24,138 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 23:32:24,197 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:32:24,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:32:24,463 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:32:24,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:32:24,483 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-20 23:32:24,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:32:24 BoogieIcfgContainer [2022-09-20 23:32:24,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:32:24,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:32:24,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:32:24,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:32:24,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:32:23" (1/3) ... [2022-09-20 23:32:24,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7c426c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:32:24, skipping insertion in model container [2022-09-20 23:32:24,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:32:24" (2/3) ... [2022-09-20 23:32:24,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7c426c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:32:24, skipping insertion in model container [2022-09-20 23:32:24,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:32:24" (3/3) ... [2022-09-20 23:32:24,492 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-09-20 23:32:24,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:32:24,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:32:24,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:32:24,573 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 23:32:24,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 186 transitions, 396 flow [2022-09-20 23:32:24,651 INFO L130 PetriNetUnfolder]: 16/183 cut-off events. [2022-09-20 23:32:24,652 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:32:24,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 16/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2022-09-20 23:32:24,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 186 transitions, 396 flow [2022-09-20 23:32:24,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 362 flow [2022-09-20 23:32:24,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:32:24,672 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;@68c0a875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:32:24,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 23:32:24,698 INFO L130 PetriNetUnfolder]: 16/171 cut-off events. [2022-09-20 23:32:24,698 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 23:32:24,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:24,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:24,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:24,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2079232414, now seen corresponding path program 1 times [2022-09-20 23:32:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:24,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630490519] [2022-09-20 23:32:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:32:24,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:24,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630490519] [2022-09-20 23:32:24,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630490519] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:32:24,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:32:24,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:32:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98185984] [2022-09-20 23:32:24,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:24,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:32:24,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:24,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:32:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:32:24,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 186 [2022-09-20 23:32:24,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:24,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:24,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 186 [2022-09-20 23:32:24,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:25,078 INFO L130 PetriNetUnfolder]: 19/211 cut-off events. [2022-09-20 23:32:25,079 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-09-20 23:32:25,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 211 events. 19/211 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 312 event pairs, 7 based on Foata normal form. 28/222 useless extension candidates. Maximal degree in co-relation 137. Up to 28 conditions per place. [2022-09-20 23:32:25,083 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 8 selfloop transitions, 0 changer transitions 5/162 dead transitions. [2022-09-20 23:32:25,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 358 flow [2022-09-20 23:32:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:32:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:32:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2022-09-20 23:32:25,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.946236559139785 [2022-09-20 23:32:25,099 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2022-09-20 23:32:25,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2022-09-20 23:32:25,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:25,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2022-09-20 23:32:25,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:25,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:25,116 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:25,118 INFO L175 Difference]: Start difference. First operand has 166 places, 172 transitions, 362 flow. Second operand 2 states and 352 transitions. [2022-09-20 23:32:25,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 358 flow [2022-09-20 23:32:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 162 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 23:32:25,126 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 320 flow [2022-09-20 23:32:25,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=320, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2022-09-20 23:32:25,131 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, -5 predicate places. [2022-09-20 23:32:25,132 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 320 flow [2022-09-20 23:32:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:25,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:25,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:25,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:32:25,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1738651789, now seen corresponding path program 1 times [2022-09-20 23:32:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799593631] [2022-09-20 23:32:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:32:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:26,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799593631] [2022-09-20 23:32:26,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799593631] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:32:26,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:32:26,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-09-20 23:32:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979839222] [2022-09-20 23:32:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 23:32:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 23:32:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-09-20 23:32:26,111 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-09-20 23:32:26,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 320 flow. Second operand has 13 states, 13 states have (on average 114.46153846153847) internal successors, (1488), 13 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:26,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:26,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-09-20 23:32:26,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:26,964 INFO L130 PetriNetUnfolder]: 753/2013 cut-off events. [2022-09-20 23:32:26,965 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-09-20 23:32:26,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 2013 events. 753/2013 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13404 event pairs, 247 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 3230. Up to 347 conditions per place. [2022-09-20 23:32:26,977 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 124 selfloop transitions, 30 changer transitions 8/260 dead transitions. [2022-09-20 23:32:26,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 260 transitions, 870 flow [2022-09-20 23:32:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 23:32:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 23:32:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1940 transitions. [2022-09-20 23:32:26,981 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6518817204301075 [2022-09-20 23:32:26,981 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1940 transitions. [2022-09-20 23:32:26,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1940 transitions. [2022-09-20 23:32:26,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:26,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1940 transitions. [2022-09-20 23:32:26,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.25) internal successors, (1940), 16 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:26,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:26,991 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:26,991 INFO L175 Difference]: Start difference. First operand has 161 places, 157 transitions, 320 flow. Second operand 16 states and 1940 transitions. [2022-09-20 23:32:26,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 260 transitions, 870 flow [2022-09-20 23:32:26,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 260 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:32:26,996 INFO L231 Difference]: Finished difference. Result has 182 places, 176 transitions, 490 flow [2022-09-20 23:32:26,996 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=490, PETRI_PLACES=182, PETRI_TRANSITIONS=176} [2022-09-20 23:32:26,997 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 16 predicate places. [2022-09-20 23:32:26,997 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 176 transitions, 490 flow [2022-09-20 23:32:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.46153846153847) internal successors, (1488), 13 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:26,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:26,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:26,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:32:26,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash 469868069, now seen corresponding path program 1 times [2022-09-20 23:32:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:26,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531661693] [2022-09-20 23:32:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:32:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:27,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531661693] [2022-09-20 23:32:27,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531661693] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:32:27,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:32:27,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:32:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266320506] [2022-09-20 23:32:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:32:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:32:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:32:27,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-09-20 23:32:27,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 176 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:27,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-09-20 23:32:27,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:27,475 INFO L130 PetriNetUnfolder]: 1136/2841 cut-off events. [2022-09-20 23:32:27,475 INFO L131 PetriNetUnfolder]: For 330/330 co-relation queries the response was YES. [2022-09-20 23:32:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 2841 events. 1136/2841 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 19962 event pairs, 473 based on Foata normal form. 0/2245 useless extension candidates. Maximal degree in co-relation 4929. Up to 1010 conditions per place. [2022-09-20 23:32:27,497 INFO L137 encePairwiseOnDemand]: 172/186 looper letters, 106 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2022-09-20 23:32:27,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 240 transitions, 906 flow [2022-09-20 23:32:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:32:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:32:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1550 transitions. [2022-09-20 23:32:27,500 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-09-20 23:32:27,500 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1550 transitions. [2022-09-20 23:32:27,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1550 transitions. [2022-09-20 23:32:27,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:27,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1550 transitions. [2022-09-20 23:32:27,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.9090909090909) internal successors, (1550), 11 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,506 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,506 INFO L175 Difference]: Start difference. First operand has 182 places, 176 transitions, 490 flow. Second operand 11 states and 1550 transitions. [2022-09-20 23:32:27,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 240 transitions, 906 flow [2022-09-20 23:32:27,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 240 transitions, 894 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-09-20 23:32:27,511 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 516 flow [2022-09-20 23:32:27,512 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=516, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2022-09-20 23:32:27,512 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-09-20 23:32:27,513 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 516 flow [2022-09-20 23:32:27,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:27,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:27,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:32:27,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:27,514 INFO L85 PathProgramCache]: Analyzing trace with hash 551571372, now seen corresponding path program 1 times [2022-09-20 23:32:27,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:27,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533082805] [2022-09-20 23:32:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:27,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:32:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:27,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533082805] [2022-09-20 23:32:27,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533082805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:32:27,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:32:27,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 23:32:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315695761] [2022-09-20 23:32:27,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:27,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:32:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:32:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 23:32:27,579 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-09-20 23:32:27,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 516 flow. Second operand has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:27,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-09-20 23:32:27,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:27,896 INFO L130 PetriNetUnfolder]: 906/2022 cut-off events. [2022-09-20 23:32:27,896 INFO L131 PetriNetUnfolder]: For 599/631 co-relation queries the response was YES. [2022-09-20 23:32:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 2022 events. 906/2022 cut-off events. For 599/631 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12283 event pairs, 514 based on Foata normal form. 32/1647 useless extension candidates. Maximal degree in co-relation 3735. Up to 1043 conditions per place. [2022-09-20 23:32:27,912 INFO L137 encePairwiseOnDemand]: 172/186 looper letters, 45 selfloop transitions, 10 changer transitions 59/228 dead transitions. [2022-09-20 23:32:27,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 228 transitions, 858 flow [2022-09-20 23:32:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:32:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:32:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1540 transitions. [2022-09-20 23:32:27,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2022-09-20 23:32:27,915 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1540 transitions. [2022-09-20 23:32:27,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1540 transitions. [2022-09-20 23:32:27,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:27,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1540 transitions. [2022-09-20 23:32:27,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,921 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,921 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 516 flow. Second operand 11 states and 1540 transitions. [2022-09-20 23:32:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 228 transitions, 858 flow [2022-09-20 23:32:27,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 228 transitions, 827 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-09-20 23:32:27,929 INFO L231 Difference]: Finished difference. Result has 192 places, 163 transitions, 447 flow [2022-09-20 23:32:27,929 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=447, PETRI_PLACES=192, PETRI_TRANSITIONS=163} [2022-09-20 23:32:27,931 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 26 predicate places. [2022-09-20 23:32:27,933 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 163 transitions, 447 flow [2022-09-20 23:32:27,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:27,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:27,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:32:27,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -221735739, now seen corresponding path program 1 times [2022-09-20 23:32:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:27,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151016668] [2022-09-20 23:32:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:32:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:28,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151016668] [2022-09-20 23:32:28,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151016668] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:28,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337141115] [2022-09-20 23:32:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:28,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:28,024 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) [2022-09-20 23:32:28,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:32:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:28,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:32:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:32:28,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:32:28,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337141115] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:28,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:32:28,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 23:32:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027463237] [2022-09-20 23:32:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:32:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:28,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:32:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 23:32:28,484 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-09-20 23:32:28,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 163 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:28,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:28,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-09-20 23:32:28,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:28,655 INFO L130 PetriNetUnfolder]: 572/1368 cut-off events. [2022-09-20 23:32:28,655 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2022-09-20 23:32:28,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1368 events. 572/1368 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7929 event pairs, 239 based on Foata normal form. 29/1187 useless extension candidates. Maximal degree in co-relation 2669. Up to 520 conditions per place. [2022-09-20 23:32:28,664 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 54 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-09-20 23:32:28,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 175 transitions, 609 flow [2022-09-20 23:32:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:32:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:32:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2022-09-20 23:32:28,666 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2022-09-20 23:32:28,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2022-09-20 23:32:28,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2022-09-20 23:32:28,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:28,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2022-09-20 23:32:28,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:28,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:28,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:28,670 INFO L175 Difference]: Start difference. First operand has 192 places, 163 transitions, 447 flow. Second operand 7 states and 966 transitions. [2022-09-20 23:32:28,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 175 transitions, 609 flow [2022-09-20 23:32:28,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 175 transitions, 524 flow, removed 14 selfloop flow, removed 21 redundant places. [2022-09-20 23:32:28,675 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 403 flow [2022-09-20 23:32:28,675 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2022-09-20 23:32:28,677 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 4 predicate places. [2022-09-20 23:32:28,677 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 403 flow [2022-09-20 23:32:28,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:28,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:28,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:28,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:28,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:28,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1352033563, now seen corresponding path program 1 times [2022-09-20 23:32:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:28,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624911428] [2022-09-20 23:32:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:32:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:28,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624911428] [2022-09-20 23:32:28,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624911428] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:28,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419515564] [2022-09-20 23:32:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:28,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:28,970 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) [2022-09-20 23:32:28,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:32:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:29,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:32:29,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:32:29,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:32:29,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419515564] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:29,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:32:29,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 23:32:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017985214] [2022-09-20 23:32:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:32:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:32:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 23:32:29,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-09-20 23:32:29,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 135.42857142857142) internal successors, (948), 7 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:29,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:29,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-09-20 23:32:29,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:29,475 INFO L130 PetriNetUnfolder]: 538/1317 cut-off events. [2022-09-20 23:32:29,475 INFO L131 PetriNetUnfolder]: For 465/621 co-relation queries the response was YES. [2022-09-20 23:32:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 1317 events. 538/1317 cut-off events. For 465/621 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7964 event pairs, 209 based on Foata normal form. 156/1259 useless extension candidates. Maximal degree in co-relation 2465. Up to 464 conditions per place. [2022-09-20 23:32:29,483 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 55 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-09-20 23:32:29,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 176 transitions, 565 flow [2022-09-20 23:32:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:32:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:32:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 965 transitions. [2022-09-20 23:32:29,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7411674347158218 [2022-09-20 23:32:29,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 965 transitions. [2022-09-20 23:32:29,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 965 transitions. [2022-09-20 23:32:29,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:29,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 965 transitions. [2022-09-20 23:32:29,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.85714285714286) internal successors, (965), 7 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:29,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:29,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:29,489 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 403 flow. Second operand 7 states and 965 transitions. [2022-09-20 23:32:29,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 176 transitions, 565 flow [2022-09-20 23:32:29,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 556 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:32:29,492 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 422 flow [2022-09-20 23:32:29,492 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-09-20 23:32:29,492 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 8 predicate places. [2022-09-20 23:32:29,493 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 422 flow [2022-09-20 23:32:29,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.42857142857142) internal successors, (948), 7 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:29,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:29,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:29,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-20 23:32:29,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:29,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash -773812509, now seen corresponding path program 1 times [2022-09-20 23:32:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:29,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842921782] [2022-09-20 23:32:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:29,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842921782] [2022-09-20 23:32:29,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842921782] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396332868] [2022-09-20 23:32:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:29,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:29,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:29,768 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) [2022-09-20 23:32:29,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 23:32:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:29,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:32:29,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:29,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:30,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396332868] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:30,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:32:30,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 23:32:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145280079] [2022-09-20 23:32:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:32:30,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 23:32:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 23:32:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 23:32:30,116 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 186 [2022-09-20 23:32:30,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 422 flow. Second operand has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:30,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 186 [2022-09-20 23:32:30,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:30,247 INFO L130 PetriNetUnfolder]: 439/1045 cut-off events. [2022-09-20 23:32:30,248 INFO L131 PetriNetUnfolder]: For 645/902 co-relation queries the response was YES. [2022-09-20 23:32:30,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 1045 events. 439/1045 cut-off events. For 645/902 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5365 event pairs, 120 based on Foata normal form. 257/1205 useless extension candidates. Maximal degree in co-relation 2192. Up to 415 conditions per place. [2022-09-20 23:32:30,254 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 55 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-09-20 23:32:30,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 176 transitions, 583 flow [2022-09-20 23:32:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:32:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:32:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 965 transitions. [2022-09-20 23:32:30,256 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7411674347158218 [2022-09-20 23:32:30,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 965 transitions. [2022-09-20 23:32:30,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 965 transitions. [2022-09-20 23:32:30,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:30,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 965 transitions. [2022-09-20 23:32:30,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.85714285714286) internal successors, (965), 7 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,259 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,259 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 422 flow. Second operand 7 states and 965 transitions. [2022-09-20 23:32:30,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 176 transitions, 583 flow [2022-09-20 23:32:30,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 176 transitions, 572 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 23:32:30,263 INFO L231 Difference]: Finished difference. Result has 177 places, 167 transitions, 439 flow [2022-09-20 23:32:30,263 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=177, PETRI_TRANSITIONS=167} [2022-09-20 23:32:30,263 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2022-09-20 23:32:30,263 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 167 transitions, 439 flow [2022-09-20 23:32:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:30,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:30,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:30,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:30,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1638031120, now seen corresponding path program 1 times [2022-09-20 23:32:30,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728888869] [2022-09-20 23:32:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:30,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:30,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:30,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728888869] [2022-09-20 23:32:30,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728888869] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:30,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008472826] [2022-09-20 23:32:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:30,556 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) [2022-09-20 23:32:30,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 23:32:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 23:32:30,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:30,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:30,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008472826] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:30,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:30,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-09-20 23:32:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296082645] [2022-09-20 23:32:30,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 23:32:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 23:32:30,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-09-20 23:32:30,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 186 [2022-09-20 23:32:30,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 167 transitions, 439 flow. Second operand has 12 states, 12 states have (on average 155.16666666666666) internal successors, (1862), 12 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:30,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:30,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 186 [2022-09-20 23:32:30,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:31,005 INFO L130 PetriNetUnfolder]: 629/1305 cut-off events. [2022-09-20 23:32:31,005 INFO L131 PetriNetUnfolder]: For 739/739 co-relation queries the response was YES. [2022-09-20 23:32:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 1305 events. 629/1305 cut-off events. For 739/739 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7589 event pairs, 127 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 2927. Up to 491 conditions per place. [2022-09-20 23:32:31,015 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 79 selfloop transitions, 17 changer transitions 3/239 dead transitions. [2022-09-20 23:32:31,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 866 flow [2022-09-20 23:32:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 23:32:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 23:32:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1619 transitions. [2022-09-20 23:32:31,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8704301075268818 [2022-09-20 23:32:31,018 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1619 transitions. [2022-09-20 23:32:31,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1619 transitions. [2022-09-20 23:32:31,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:31,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1619 transitions. [2022-09-20 23:32:31,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.9) internal successors, (1619), 10 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:31,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:31,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:31,024 INFO L175 Difference]: Start difference. First operand has 177 places, 167 transitions, 439 flow. Second operand 10 states and 1619 transitions. [2022-09-20 23:32:31,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 866 flow [2022-09-20 23:32:31,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 239 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 23:32:31,028 INFO L231 Difference]: Finished difference. Result has 189 places, 184 transitions, 578 flow [2022-09-20 23:32:31,029 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=189, PETRI_TRANSITIONS=184} [2022-09-20 23:32:31,029 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 23 predicate places. [2022-09-20 23:32:31,029 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 184 transitions, 578 flow [2022-09-20 23:32:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.16666666666666) internal successors, (1862), 12 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:31,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:31,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:31,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:31,243 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 [2022-09-20 23:32:31,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 823223750, now seen corresponding path program 2 times [2022-09-20 23:32:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:31,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806998885] [2022-09-20 23:32:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:31,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806998885] [2022-09-20 23:32:31,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806998885] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049452491] [2022-09-20 23:32:31,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 23:32:31,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:31,338 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) [2022-09-20 23:32:31,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 23:32:31,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:32:31,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:32:31,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 23:32:31,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:31,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:32:31,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049452491] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:31,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:31,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2022-09-20 23:32:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252431520] [2022-09-20 23:32:31,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-20 23:32:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-20 23:32:31,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-09-20 23:32:31,755 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 186 [2022-09-20 23:32:31,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 184 transitions, 578 flow. Second operand has 21 states, 21 states have (on average 128.0952380952381) internal successors, (2690), 21 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:31,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:31,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 186 [2022-09-20 23:32:31,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:34,157 INFO L130 PetriNetUnfolder]: 3793/6982 cut-off events. [2022-09-20 23:32:34,158 INFO L131 PetriNetUnfolder]: For 11056/12206 co-relation queries the response was YES. [2022-09-20 23:32:34,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20678 conditions, 6982 events. 3793/6982 cut-off events. For 11056/12206 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 52640 event pairs, 233 based on Foata normal form. 1251/8134 useless extension candidates. Maximal degree in co-relation 20658. Up to 867 conditions per place. [2022-09-20 23:32:34,209 INFO L137 encePairwiseOnDemand]: 157/186 looper letters, 298 selfloop transitions, 81 changer transitions 216/702 dead transitions. [2022-09-20 23:32:34,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 702 transitions, 3990 flow [2022-09-20 23:32:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-09-20 23:32:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-09-20 23:32:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 8044 transitions. [2022-09-20 23:32:34,225 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6975372875476934 [2022-09-20 23:32:34,225 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 8044 transitions. [2022-09-20 23:32:34,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 8044 transitions. [2022-09-20 23:32:34,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:34,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 8044 transitions. [2022-09-20 23:32:34,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 129.74193548387098) internal successors, (8044), 62 states have internal predecessors, (8044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:34,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 186.0) internal successors, (11718), 63 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:34,264 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 186.0) internal successors, (11718), 63 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:34,264 INFO L175 Difference]: Start difference. First operand has 189 places, 184 transitions, 578 flow. Second operand 62 states and 8044 transitions. [2022-09-20 23:32:34,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 702 transitions, 3990 flow [2022-09-20 23:32:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 702 transitions, 3990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:32:34,296 INFO L231 Difference]: Finished difference. Result has 286 places, 244 transitions, 1170 flow [2022-09-20 23:32:34,296 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=1170, PETRI_PLACES=286, PETRI_TRANSITIONS=244} [2022-09-20 23:32:34,297 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 120 predicate places. [2022-09-20 23:32:34,297 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 244 transitions, 1170 flow [2022-09-20 23:32:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 128.0952380952381) internal successors, (2690), 21 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:34,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:34,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:34,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:34,511 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 [2022-09-20 23:32:34,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2084629896, now seen corresponding path program 3 times [2022-09-20 23:32:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:34,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258754686] [2022-09-20 23:32:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-09-20 23:32:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:34,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258754686] [2022-09-20 23:32:34,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258754686] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:34,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503489411] [2022-09-20 23:32:34,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 23:32:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:34,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:32:34,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 23:32:34,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-20 23:32:34,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:32:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 23:32:34,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-09-20 23:32:34,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-09-20 23:32:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503489411] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:34,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:34,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2022-09-20 23:32:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630101751] [2022-09-20 23:32:34,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:34,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-20 23:32:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-20 23:32:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-09-20 23:32:34,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 186 [2022-09-20 23:32:34,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 244 transitions, 1170 flow. Second operand has 21 states, 21 states have (on average 127.28571428571429) internal successors, (2673), 21 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:34,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:34,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 186 [2022-09-20 23:32:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:38,315 INFO L130 PetriNetUnfolder]: 7644/14474 cut-off events. [2022-09-20 23:32:38,316 INFO L131 PetriNetUnfolder]: For 288433/289579 co-relation queries the response was YES. [2022-09-20 23:32:38,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70738 conditions, 14474 events. 7644/14474 cut-off events. For 288433/289579 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 119484 event pairs, 1567 based on Foata normal form. 951/15057 useless extension candidates. Maximal degree in co-relation 70681. Up to 2577 conditions per place. [2022-09-20 23:32:38,556 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 395 selfloop transitions, 75 changer transitions 12/614 dead transitions. [2022-09-20 23:32:38,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 614 transitions, 5080 flow [2022-09-20 23:32:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 23:32:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 23:32:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3360 transitions. [2022-09-20 23:32:38,560 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6947890818858561 [2022-09-20 23:32:38,560 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3360 transitions. [2022-09-20 23:32:38,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3360 transitions. [2022-09-20 23:32:38,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:38,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3360 transitions. [2022-09-20 23:32:38,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 129.23076923076923) internal successors, (3360), 26 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:38,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:38,570 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:38,570 INFO L175 Difference]: Start difference. First operand has 286 places, 244 transitions, 1170 flow. Second operand 26 states and 3360 transitions. [2022-09-20 23:32:38,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 614 transitions, 5080 flow [2022-09-20 23:32:39,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 614 transitions, 4733 flow, removed 167 selfloop flow, removed 18 redundant places. [2022-09-20 23:32:39,259 INFO L231 Difference]: Finished difference. Result has 278 places, 290 transitions, 1646 flow [2022-09-20 23:32:39,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1646, PETRI_PLACES=278, PETRI_TRANSITIONS=290} [2022-09-20 23:32:39,260 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 112 predicate places. [2022-09-20 23:32:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 290 transitions, 1646 flow [2022-09-20 23:32:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 127.28571428571429) internal successors, (2673), 21 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:39,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-20 23:32:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:39,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash -835573280, now seen corresponding path program 4 times [2022-09-20 23:32:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:39,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233624753] [2022-09-20 23:32:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:39,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-20 23:32:39,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:39,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233624753] [2022-09-20 23:32:39,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233624753] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:39,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736832050] [2022-09-20 23:32:39,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 23:32:39,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:39,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:32:39,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 23:32:39,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 23:32:39,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:32:39,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:32:39,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-20 23:32:39,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-20 23:32:40,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736832050] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:40,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:40,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-09-20 23:32:40,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921371247] [2022-09-20 23:32:40,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:40,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-20 23:32:40,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-20 23:32:40,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2022-09-20 23:32:40,133 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 186 [2022-09-20 23:32:40,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 290 transitions, 1646 flow. Second operand has 24 states, 24 states have (on average 131.04166666666666) internal successors, (3145), 24 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:40,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:40,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 186 [2022-09-20 23:32:40,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:41,710 INFO L130 PetriNetUnfolder]: 3503/7189 cut-off events. [2022-09-20 23:32:41,710 INFO L131 PetriNetUnfolder]: For 45951/47413 co-relation queries the response was YES. [2022-09-20 23:32:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30263 conditions, 7189 events. 3503/7189 cut-off events. For 45951/47413 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 59880 event pairs, 588 based on Foata normal form. 1437/8320 useless extension candidates. Maximal degree in co-relation 30211. Up to 2011 conditions per place. [2022-09-20 23:32:41,947 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 196 selfloop transitions, 49 changer transitions 6/397 dead transitions. [2022-09-20 23:32:41,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 397 transitions, 2979 flow [2022-09-20 23:32:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 23:32:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 23:32:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2647 transitions. [2022-09-20 23:32:41,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7115591397849462 [2022-09-20 23:32:41,950 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2647 transitions. [2022-09-20 23:32:41,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2647 transitions. [2022-09-20 23:32:41,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:41,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2647 transitions. [2022-09-20 23:32:41,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.35) internal successors, (2647), 20 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:41,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:41,956 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:41,956 INFO L175 Difference]: Start difference. First operand has 278 places, 290 transitions, 1646 flow. Second operand 20 states and 2647 transitions. [2022-09-20 23:32:41,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 397 transitions, 2979 flow [2022-09-20 23:32:42,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 397 transitions, 2948 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-09-20 23:32:42,151 INFO L231 Difference]: Finished difference. Result has 291 places, 295 transitions, 1822 flow [2022-09-20 23:32:42,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1822, PETRI_PLACES=291, PETRI_TRANSITIONS=295} [2022-09-20 23:32:42,153 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 125 predicate places. [2022-09-20 23:32:42,153 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 295 transitions, 1822 flow [2022-09-20 23:32:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 131.04166666666666) internal successors, (3145), 24 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:42,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:42,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:42,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 23:32:42,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:42,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:42,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:42,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1402404709, now seen corresponding path program 5 times [2022-09-20 23:32:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:42,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506585904] [2022-09-20 23:32:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 23:32:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506585904] [2022-09-20 23:32:42,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506585904] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604666643] [2022-09-20 23:32:42,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 23:32:42,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:42,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:42,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:32:42,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 23:32:42,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 23:32:42,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:32:42,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 23:32:42,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 23:32:42,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 23:32:42,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604666643] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:42,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-09-20 23:32:42,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9351126] [2022-09-20 23:32:42,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:42,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 23:32:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 23:32:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-09-20 23:32:42,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 186 [2022-09-20 23:32:42,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 295 transitions, 1822 flow. Second operand has 19 states, 19 states have (on average 153.3684210526316) internal successors, (2914), 19 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:42,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:42,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 186 [2022-09-20 23:32:42,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:45,170 INFO L130 PetriNetUnfolder]: 4661/9008 cut-off events. [2022-09-20 23:32:45,170 INFO L131 PetriNetUnfolder]: For 48293/52317 co-relation queries the response was YES. [2022-09-20 23:32:45,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37757 conditions, 9008 events. 4661/9008 cut-off events. For 48293/52317 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 78823 event pairs, 549 based on Foata normal form. 325/8813 useless extension candidates. Maximal degree in co-relation 37702. Up to 2885 conditions per place. [2022-09-20 23:32:45,299 INFO L137 encePairwiseOnDemand]: 173/186 looper letters, 371 selfloop transitions, 123 changer transitions 79/730 dead transitions. [2022-09-20 23:32:45,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 730 transitions, 6434 flow [2022-09-20 23:32:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 23:32:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 23:32:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 6442 transitions. [2022-09-20 23:32:45,304 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8447416732231838 [2022-09-20 23:32:45,304 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 6442 transitions. [2022-09-20 23:32:45,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 6442 transitions. [2022-09-20 23:32:45,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:45,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 6442 transitions. [2022-09-20 23:32:45,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 157.1219512195122) internal successors, (6442), 41 states have internal predecessors, (6442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:45,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 186.0) internal successors, (7812), 42 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:45,318 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 186.0) internal successors, (7812), 42 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:45,318 INFO L175 Difference]: Start difference. First operand has 291 places, 295 transitions, 1822 flow. Second operand 41 states and 6442 transitions. [2022-09-20 23:32:45,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 730 transitions, 6434 flow [2022-09-20 23:32:45,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 730 transitions, 6286 flow, removed 13 selfloop flow, removed 17 redundant places. [2022-09-20 23:32:45,561 INFO L231 Difference]: Finished difference. Result has 328 places, 416 transitions, 3117 flow [2022-09-20 23:32:45,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=3117, PETRI_PLACES=328, PETRI_TRANSITIONS=416} [2022-09-20 23:32:45,562 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 162 predicate places. [2022-09-20 23:32:45,562 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 416 transitions, 3117 flow [2022-09-20 23:32:45,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 153.3684210526316) internal successors, (2914), 19 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:45,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:32:45,563 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:45,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-20 23:32:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-20 23:32:45,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 23:32:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:32:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1589961483, now seen corresponding path program 6 times [2022-09-20 23:32:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:32:45,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475629224] [2022-09-20 23:32:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:32:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:32:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:32:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-09-20 23:32:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:32:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475629224] [2022-09-20 23:32:45,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475629224] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:32:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797046553] [2022-09-20 23:32:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-20 23:32:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:32:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:32:45,918 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:32:45,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 23:32:46,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-09-20 23:32:46,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:32:46,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 23:32:46,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:32:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-09-20 23:32:46,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:32:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-09-20 23:32:46,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797046553] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:32:46,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:32:46,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 22 [2022-09-20 23:32:46,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279410405] [2022-09-20 23:32:46,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:32:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-20 23:32:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:32:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-20 23:32:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-09-20 23:32:46,239 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 186 [2022-09-20 23:32:46,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 416 transitions, 3117 flow. Second operand has 22 states, 22 states have (on average 125.18181818181819) internal successors, (2754), 22 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:46,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:32:46,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 186 [2022-09-20 23:32:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:32:55,101 INFO L130 PetriNetUnfolder]: 15990/27480 cut-off events. [2022-09-20 23:32:55,101 INFO L131 PetriNetUnfolder]: For 203060/210185 co-relation queries the response was YES. [2022-09-20 23:32:55,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134941 conditions, 27480 events. 15990/27480 cut-off events. For 203060/210185 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 239995 event pairs, 519 based on Foata normal form. 7434/34605 useless extension candidates. Maximal degree in co-relation 134877. Up to 4674 conditions per place. [2022-09-20 23:32:55,566 INFO L137 encePairwiseOnDemand]: 153/186 looper letters, 0 selfloop transitions, 0 changer transitions 1547/1547 dead transitions. [2022-09-20 23:32:55,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 1547 transitions, 15322 flow [2022-09-20 23:32:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-09-20 23:32:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-09-20 23:32:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 12444 transitions. [2022-09-20 23:32:55,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6757901596611274 [2022-09-20 23:32:55,586 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 12444 transitions. [2022-09-20 23:32:55,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 12444 transitions. [2022-09-20 23:32:55,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:32:55,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 12444 transitions. [2022-09-20 23:32:55,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 125.6969696969697) internal successors, (12444), 99 states have internal predecessors, (12444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:55,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 186.0) internal successors, (18600), 100 states have internal predecessors, (18600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:55,629 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 186.0) internal successors, (18600), 100 states have internal predecessors, (18600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:55,629 INFO L175 Difference]: Start difference. First operand has 328 places, 416 transitions, 3117 flow. Second operand 99 states and 12444 transitions. [2022-09-20 23:32:55,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 1547 transitions, 15322 flow [2022-09-20 23:32:56,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1547 transitions, 14656 flow, removed 239 selfloop flow, removed 5 redundant places. [2022-09-20 23:32:56,735 INFO L231 Difference]: Finished difference. Result has 409 places, 0 transitions, 0 flow [2022-09-20 23:32:56,735 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=0, PETRI_PLACES=409, PETRI_TRANSITIONS=0} [2022-09-20 23:32:56,736 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 243 predicate places. [2022-09-20 23:32:56,736 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 0 transitions, 0 flow [2022-09-20 23:32:56,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.18181818181819) internal successors, (2754), 22 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:32:56,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 23:32:56,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 23:32:56,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 23:32:56,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 23:32:56,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-20 23:32:56,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-20 23:32:56,940 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:32:56,943 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 23:32:56,943 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 23:32:56,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 11:32:56 BasicIcfg [2022-09-20 23:32:56,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 23:32:56,946 INFO L158 Benchmark]: Toolchain (without parser) took 33172.75ms. Allocated memory was 169.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 112.5MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.61ms. Allocated memory is still 169.9MB. Free memory was 112.2MB in the beginning and 143.1MB in the end (delta: -30.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.64ms. Allocated memory is still 169.9MB. Free memory was 143.1MB in the beginning and 141.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: Boogie Preprocessor took 26.87ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 139.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: RCFGBuilder took 404.24ms. Allocated memory is still 169.9MB. Free memory was 139.6MB in the beginning and 122.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-20 23:32:56,947 INFO L158 Benchmark]: TraceAbstraction took 32459.36ms. Allocated memory was 169.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 121.8MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-09-20 23:32:56,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 241.61ms. Allocated memory is still 169.9MB. Free memory was 112.2MB in the beginning and 143.1MB in the end (delta: -30.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.64ms. Allocated memory is still 169.9MB. Free memory was 143.1MB in the beginning and 141.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.87ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 139.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 404.24ms. Allocated memory is still 169.9MB. Free memory was 139.6MB in the beginning and 122.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 32459.36ms. Allocated memory was 169.9MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 121.8MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 206 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.3s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 24.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3927 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3927 mSDsluCounter, 1681 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2789 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8216 IncrementalHoareTripleChecker+Invalid, 8553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 282 mSDtfsCounter, 8216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3474 GetRequests, 3023 SyntacticMatches, 24 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7790 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3117occurred in iteration=12, InterpolantAutomatonStates: 319, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 3476 NumberOfCodeBlocks, 3329 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 4928 ConstructedInterpolants, 0 QuantifiedInterpolants, 13273 SizeOfPredicates, 58 NumberOfNonLiveVariables, 3035 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 438/551 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 23:32:56,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...