/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:25:22,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:25:22,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:25:22,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:25:22,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:25:22,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:25:22,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:25:22,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:25:22,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:25:22,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:25:22,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:25:22,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:25:22,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:25:22,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:25:22,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:25:22,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:25:22,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:25:22,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:25:22,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:25:22,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:25:22,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:25:22,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:25:22,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:25:22,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:25:22,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:25:22,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:25:22,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:25:22,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:25:22,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:25:22,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:25:22,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:25:22,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:25:22,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:25:22,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:25:22,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:25:22,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:25:22,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:25:22,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:25:22,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:25:22,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:25:22,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:25:22,417 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 [2022-01-19 02:25:22,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:25:22,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:25:22,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:25:22,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:25:22,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:25:22,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:25:22,445 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:25:22,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:25:22,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:25:22,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:25:22,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:25:22,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:25:22,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:25:22,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:25:22,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:25:22,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:25:22,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:25:22,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:25:22,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:25:22,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:25:22,448 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:25:22,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:25:22,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:25:22,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:25:22,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:25:22,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:25:22,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:25:22,628 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:25:22,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2022-01-19 02:25:22,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5e2eac6/3d457625d91f43a6b71d9b432680d127/FLAGc38709ae1 [2022-01-19 02:25:23,003 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:25:23,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2022-01-19 02:25:23,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5e2eac6/3d457625d91f43a6b71d9b432680d127/FLAGc38709ae1 [2022-01-19 02:25:23,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5e2eac6/3d457625d91f43a6b71d9b432680d127 [2022-01-19 02:25:23,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:25:23,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:25:23,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:25:23,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:25:23,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:25:23,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f78df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23, skipping insertion in model container [2022-01-19 02:25:23,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:25:23,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:25:23,606 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-prod-cons.wvr.c[3056,3069] [2022-01-19 02:25:23,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:25:23,624 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:25:23,654 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-prod-cons.wvr.c[3056,3069] [2022-01-19 02:25:23,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:25:23,669 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:25:23,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23 WrapperNode [2022-01-19 02:25:23,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:25:23,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:25:23,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:25:23,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:25:23,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,711 INFO L137 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 166 [2022-01-19 02:25:23,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:25:23,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:25:23,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:25:23,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:25:23,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:25:23,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:25:23,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:25:23,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:25:23,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (1/1) ... [2022-01-19 02:25:23,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:25:23,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:25:23,778 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) [2022-01-19 02:25:23,780 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 [2022-01-19 02:25:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:25:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:25:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:25:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 02:25:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:25:23,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 02:25:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:25:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:25:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:25:23,806 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:25:23,908 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:25:23,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:25:24,116 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:25:24,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:25:24,152 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 02:25:24,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:25:24 BoogieIcfgContainer [2022-01-19 02:25:24,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:25:24,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:25:24,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:25:24,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:25:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:25:23" (1/3) ... [2022-01-19 02:25:24,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff351f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:25:24, skipping insertion in model container [2022-01-19 02:25:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:25:23" (2/3) ... [2022-01-19 02:25:24,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fff351f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:25:24, skipping insertion in model container [2022-01-19 02:25:24,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:25:24" (3/3) ... [2022-01-19 02:25:24,159 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2022-01-19 02:25:24,162 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:25:24,162 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:25:24,162 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:25:24,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,187 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,188 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,189 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,196 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,199 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,200 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_~temp~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,201 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,202 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:25:24,209 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 02:25:24,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:25:24,259 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:25:24,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 02:25:24,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 156 transitions, 336 flow [2022-01-19 02:25:24,338 INFO L129 PetriNetUnfolder]: 11/153 cut-off events. [2022-01-19 02:25:24,338 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:25:24,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 11/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 122. Up to 3 conditions per place. [2022-01-19 02:25:24,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 156 transitions, 336 flow [2022-01-19 02:25:24,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 142 transitions, 302 flow [2022-01-19 02:25:24,373 INFO L129 PetriNetUnfolder]: 11/141 cut-off events. [2022-01-19 02:25:24,373 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:25:24,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:24,379 INFO L254 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] [2022-01-19 02:25:24,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1502345378, now seen corresponding path program 1 times [2022-01-19 02:25:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:24,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342136966] [2022-01-19 02:25:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:24,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:24,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:24,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342136966] [2022-01-19 02:25:24,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342136966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:25:24,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:25:24,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 02:25:24,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789819472] [2022-01-19 02:25:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:25:24,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 02:25:24,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 02:25:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 02:25:24,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 156 [2022-01-19 02:25:24,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 142 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:24,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 156 [2022-01-19 02:25:24,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:24,673 INFO L129 PetriNetUnfolder]: 24/206 cut-off events. [2022-01-19 02:25:24,673 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-01-19 02:25:24,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 206 events. 24/206 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 370 event pairs, 7 based on Foata normal form. 22/206 useless extension candidates. Maximal degree in co-relation 154. Up to 32 conditions per place. [2022-01-19 02:25:24,676 INFO L132 encePairwiseOnDemand]: 149/156 looper letters, 8 selfloop transitions, 0 changer transitions 4/135 dead transitions. [2022-01-19 02:25:24,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 135 transitions, 304 flow [2022-01-19 02:25:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 02:25:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 02:25:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 295 transitions. [2022-01-19 02:25:24,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9455128205128205 [2022-01-19 02:25:24,695 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 295 transitions. [2022-01-19 02:25:24,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 295 transitions. [2022-01-19 02:25:24,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:24,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 295 transitions. [2022-01-19 02:25:24,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,710 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,711 INFO L186 Difference]: Start difference. First operand has 141 places, 142 transitions, 302 flow. Second operand 2 states and 295 transitions. [2022-01-19 02:25:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 135 transitions, 304 flow [2022-01-19 02:25:24,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 02:25:24,718 INFO L242 Difference]: Finished difference. Result has 136 places, 131 transitions, 268 flow [2022-01-19 02:25:24,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=268, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2022-01-19 02:25:24,724 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2022-01-19 02:25:24,725 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 268 flow [2022-01-19 02:25:24,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:24,725 INFO L254 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] [2022-01-19 02:25:24,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:25:24,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1179471207, now seen corresponding path program 1 times [2022-01-19 02:25:24,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:24,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174893776] [2022-01-19 02:25:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:24,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:24,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:24,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174893776] [2022-01-19 02:25:24,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174893776] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:25:24,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:25:24,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 02:25:24,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078000602] [2022-01-19 02:25:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:25:24,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 02:25:24,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 02:25:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 02:25:24,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 156 [2022-01-19 02:25:24,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:24,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 156 [2022-01-19 02:25:24,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:24,970 INFO L129 PetriNetUnfolder]: 108/360 cut-off events. [2022-01-19 02:25:24,970 INFO L130 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2022-01-19 02:25:24,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 360 events. 108/360 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1321 event pairs, 16 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 547. Up to 61 conditions per place. [2022-01-19 02:25:24,974 INFO L132 encePairwiseOnDemand]: 151/156 looper letters, 30 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2022-01-19 02:25:24,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 149 transitions, 378 flow [2022-01-19 02:25:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 02:25:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 02:25:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 692 transitions. [2022-01-19 02:25:24,977 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8871794871794871 [2022-01-19 02:25:24,977 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 692 transitions. [2022-01-19 02:25:24,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 692 transitions. [2022-01-19 02:25:24,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:24,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 692 transitions. [2022-01-19 02:25:24,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,981 INFO L186 Difference]: Start difference. First operand has 136 places, 131 transitions, 268 flow. Second operand 5 states and 692 transitions. [2022-01-19 02:25:24,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 149 transitions, 378 flow [2022-01-19 02:25:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 149 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 02:25:24,991 INFO L242 Difference]: Finished difference. Result has 139 places, 134 transitions, 299 flow [2022-01-19 02:25:24,991 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2022-01-19 02:25:24,992 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -2 predicate places. [2022-01-19 02:25:24,992 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 299 flow [2022-01-19 02:25:24,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:24,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:24,993 INFO L254 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] [2022-01-19 02:25:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 02:25:24,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1830553999, now seen corresponding path program 2 times [2022-01-19 02:25:24,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933023905] [2022-01-19 02:25:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:24,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:25,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933023905] [2022-01-19 02:25:25,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933023905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:25:25,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:25:25,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 02:25:25,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138310154] [2022-01-19 02:25:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:25:25,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 02:25:25,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 02:25:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-19 02:25:25,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 156 [2022-01-19 02:25:25,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 299 flow. Second operand has 9 states, 9 states have (on average 110.44444444444444) internal successors, (994), 9 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:25,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 156 [2022-01-19 02:25:25,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:25,505 INFO L129 PetriNetUnfolder]: 223/618 cut-off events. [2022-01-19 02:25:25,505 INFO L130 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-01-19 02:25:25,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 618 events. 223/618 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3311 event pairs, 20 based on Foata normal form. 10/607 useless extension candidates. Maximal degree in co-relation 1228. Up to 144 conditions per place. [2022-01-19 02:25:25,511 INFO L132 encePairwiseOnDemand]: 145/156 looper letters, 52 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2022-01-19 02:25:25,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 157 transitions, 485 flow [2022-01-19 02:25:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 02:25:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 02:25:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1132 transitions. [2022-01-19 02:25:25,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7256410256410256 [2022-01-19 02:25:25,513 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1132 transitions. [2022-01-19 02:25:25,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1132 transitions. [2022-01-19 02:25:25,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:25,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1132 transitions. [2022-01-19 02:25:25,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,519 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,519 INFO L186 Difference]: Start difference. First operand has 139 places, 134 transitions, 299 flow. Second operand 10 states and 1132 transitions. [2022-01-19 02:25:25,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 157 transitions, 485 flow [2022-01-19 02:25:25,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 157 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 02:25:25,523 INFO L242 Difference]: Finished difference. Result has 149 places, 136 transitions, 339 flow [2022-01-19 02:25:25,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=339, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2022-01-19 02:25:25,525 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 8 predicate places. [2022-01-19 02:25:25,525 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 339 flow [2022-01-19 02:25:25,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.44444444444444) internal successors, (994), 9 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:25,526 INFO L254 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] [2022-01-19 02:25:25,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:25:25,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash -334250164, now seen corresponding path program 1 times [2022-01-19 02:25:25,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:25,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352815968] [2022-01-19 02:25:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:25,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:25,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:25,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352815968] [2022-01-19 02:25:25,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352815968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:25:25,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:25:25,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 02:25:25,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046828226] [2022-01-19 02:25:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:25:25,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 02:25:25,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 02:25:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 02:25:25,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 156 [2022-01-19 02:25:25,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:25,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 156 [2022-01-19 02:25:25,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:25,700 INFO L129 PetriNetUnfolder]: 33/243 cut-off events. [2022-01-19 02:25:25,700 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-01-19 02:25:25,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 243 events. 33/243 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 5 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 368. Up to 41 conditions per place. [2022-01-19 02:25:25,701 INFO L132 encePairwiseOnDemand]: 153/156 looper letters, 13 selfloop transitions, 2 changer transitions 1/140 dead transitions. [2022-01-19 02:25:25,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 382 flow [2022-01-19 02:25:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 02:25:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 02:25:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-01-19 02:25:25,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9081196581196581 [2022-01-19 02:25:25,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2022-01-19 02:25:25,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2022-01-19 02:25:25,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:25,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2022-01-19 02:25:25,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,706 INFO L186 Difference]: Start difference. First operand has 149 places, 136 transitions, 339 flow. Second operand 3 states and 425 transitions. [2022-01-19 02:25:25,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 382 flow [2022-01-19 02:25:25,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 140 transitions, 365 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-19 02:25:25,709 INFO L242 Difference]: Finished difference. Result has 145 places, 137 transitions, 334 flow [2022-01-19 02:25:25,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-01-19 02:25:25,710 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 4 predicate places. [2022-01-19 02:25:25,711 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 334 flow [2022-01-19 02:25:25,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:25,712 INFO L254 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] [2022-01-19 02:25:25,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:25:25,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1349938213, now seen corresponding path program 1 times [2022-01-19 02:25:25,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:25,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410757723] [2022-01-19 02:25:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:25,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:25,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:25,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410757723] [2022-01-19 02:25:25,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410757723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:25:25,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:25:25,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 02:25:25,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903973319] [2022-01-19 02:25:25,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:25:25,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 02:25:25,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:25,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 02:25:25,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 02:25:25,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 156 [2022-01-19 02:25:25,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:25,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 156 [2022-01-19 02:25:25,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:25,896 INFO L129 PetriNetUnfolder]: 34/302 cut-off events. [2022-01-19 02:25:25,896 INFO L130 PetriNetUnfolder]: For 71/79 co-relation queries the response was YES. [2022-01-19 02:25:25,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 302 events. 34/302 cut-off events. For 71/79 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 801 event pairs, 9 based on Foata normal form. 3/282 useless extension candidates. Maximal degree in co-relation 476. Up to 51 conditions per place. [2022-01-19 02:25:25,898 INFO L132 encePairwiseOnDemand]: 148/156 looper letters, 21 selfloop transitions, 6 changer transitions 5/146 dead transitions. [2022-01-19 02:25:25,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 420 flow [2022-01-19 02:25:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:25:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:25:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 914 transitions. [2022-01-19 02:25:25,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.836996336996337 [2022-01-19 02:25:25,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 914 transitions. [2022-01-19 02:25:25,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 914 transitions. [2022-01-19 02:25:25,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:25,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 914 transitions. [2022-01-19 02:25:25,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,908 INFO L186 Difference]: Start difference. First operand has 145 places, 137 transitions, 334 flow. Second operand 7 states and 914 transitions. [2022-01-19 02:25:25,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 420 flow [2022-01-19 02:25:25,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 02:25:25,916 INFO L242 Difference]: Finished difference. Result has 152 places, 138 transitions, 354 flow [2022-01-19 02:25:25,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2022-01-19 02:25:25,918 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 11 predicate places. [2022-01-19 02:25:25,918 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 354 flow [2022-01-19 02:25:25,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:25,919 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:25,919 INFO L254 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] [2022-01-19 02:25:25,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:25:25,920 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 530472597, now seen corresponding path program 1 times [2022-01-19 02:25:25,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673184265] [2022-01-19 02:25:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:25,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:26,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673184265] [2022-01-19 02:25:26,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673184265] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:25:26,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065712069] [2022-01-19 02:25:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:26,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:25:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:25:26,572 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) [2022-01-19 02:25:26,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 02:25:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-19 02:25:26,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:25:27,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-19 02:25:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:27,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:25:28,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:25:28,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-19 02:25:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065712069] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:25:29,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:25:29,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 20] total 60 [2022-01-19 02:25:29,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146396263] [2022-01-19 02:25:29,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:25:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-19 02:25:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-19 02:25:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=3036, Unknown=0, NotChecked=0, Total=3540 [2022-01-19 02:25:29,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2022-01-19 02:25:29,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 354 flow. Second operand has 60 states, 60 states have (on average 86.73333333333333) internal successors, (5204), 60 states have internal predecessors, (5204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:29,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:29,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2022-01-19 02:25:29,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:38,197 INFO L129 PetriNetUnfolder]: 7997/16882 cut-off events. [2022-01-19 02:25:38,197 INFO L130 PetriNetUnfolder]: For 9922/9922 co-relation queries the response was YES. [2022-01-19 02:25:38,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38392 conditions, 16882 events. 7997/16882 cut-off events. For 9922/9922 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 164161 event pairs, 757 based on Foata normal form. 54/15982 useless extension candidates. Maximal degree in co-relation 38380. Up to 1583 conditions per place. [2022-01-19 02:25:38,273 INFO L132 encePairwiseOnDemand]: 120/156 looper letters, 526 selfloop transitions, 166 changer transitions 647/1406 dead transitions. [2022-01-19 02:25:38,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1406 transitions, 6762 flow [2022-01-19 02:25:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-19 02:25:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2022-01-19 02:25:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 14336 transitions. [2022-01-19 02:25:38,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5928866832092639 [2022-01-19 02:25:38,292 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 14336 transitions. [2022-01-19 02:25:38,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 14336 transitions. [2022-01-19 02:25:38,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:25:38,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 14336 transitions. [2022-01-19 02:25:38,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 92.49032258064516) internal successors, (14336), 155 states have internal predecessors, (14336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:38,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 156.0) internal successors, (24336), 156 states have internal predecessors, (24336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:38,359 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 156.0) internal successors, (24336), 156 states have internal predecessors, (24336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:38,359 INFO L186 Difference]: Start difference. First operand has 152 places, 138 transitions, 354 flow. Second operand 155 states and 14336 transitions. [2022-01-19 02:25:38,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1406 transitions, 6762 flow [2022-01-19 02:25:38,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1406 transitions, 6722 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-01-19 02:25:38,402 INFO L242 Difference]: Finished difference. Result has 389 places, 284 transitions, 1706 flow [2022-01-19 02:25:38,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=155, PETRI_FLOW=1706, PETRI_PLACES=389, PETRI_TRANSITIONS=284} [2022-01-19 02:25:38,404 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 248 predicate places. [2022-01-19 02:25:38,404 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 284 transitions, 1706 flow [2022-01-19 02:25:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 86.73333333333333) internal successors, (5204), 60 states have internal predecessors, (5204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:38,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:25:38,408 INFO L254 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] [2022-01-19 02:25:38,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 02:25:38,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 02:25:38,625 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:25:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:25:38,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2060040751, now seen corresponding path program 2 times [2022-01-19 02:25:38,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:25:38,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578016054] [2022-01-19 02:25:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:25:38,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:25:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:25:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:39,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:25:39,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578016054] [2022-01-19 02:25:39,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578016054] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:25:39,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63223341] [2022-01-19 02:25:39,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:25:39,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:25:39,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:25:39,250 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) [2022-01-19 02:25:39,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 02:25:39,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:25:39,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:25:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 02:25:39,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:25:40,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:25:40,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:25:40,741 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:25:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:25:41,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:25:41,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 02:25:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:25:41,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:25:41,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_139 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_139) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) is different from false [2022-01-19 02:25:42,708 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:25:42,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-01-19 02:25:42,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:25:42,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 824 treesize of output 792 [2022-01-19 02:25:42,739 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:25:42,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 776 treesize of output 720 [2022-01-19 02:25:42,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 590 treesize of output 494 [2022-01-19 02:25:42,757 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:25:42,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 608 treesize of output 588 [2022-01-19 02:25:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-19 02:25:44,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63223341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:25:44,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:25:44,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31, 30] total 78 [2022-01-19 02:25:44,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172334960] [2022-01-19 02:25:44,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:25:44,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-19 02:25:44,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:25:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-19 02:25:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=5379, Unknown=29, NotChecked=150, Total=6006 [2022-01-19 02:25:44,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 156 [2022-01-19 02:25:44,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 284 transitions, 1706 flow. Second operand has 78 states, 78 states have (on average 71.37179487179488) internal successors, (5567), 78 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:25:44,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:25:44,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 156 [2022-01-19 02:25:44,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:25:55,712 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_139 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_139) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) (not (<= (mod |c_thread2Thread1of1ForFork2_~cond~1#1| 256) 0))) is different from false [2022-01-19 02:26:04,148 INFO L129 PetriNetUnfolder]: 14736/29069 cut-off events. [2022-01-19 02:26:04,148 INFO L130 PetriNetUnfolder]: For 1024724/1024830 co-relation queries the response was YES. [2022-01-19 02:26:04,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191224 conditions, 29069 events. 14736/29069 cut-off events. For 1024724/1024830 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 285040 event pairs, 1536 based on Foata normal form. 207/28164 useless extension candidates. Maximal degree in co-relation 191125. Up to 3455 conditions per place. [2022-01-19 02:26:04,655 INFO L132 encePairwiseOnDemand]: 108/156 looper letters, 856 selfloop transitions, 312 changer transitions 362/1588 dead transitions. [2022-01-19 02:26:04,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1588 transitions, 18235 flow [2022-01-19 02:26:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-19 02:26:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-01-19 02:26:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 9616 transitions. [2022-01-19 02:26:04,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.505254308532997 [2022-01-19 02:26:04,794 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 9616 transitions. [2022-01-19 02:26:04,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 9616 transitions. [2022-01-19 02:26:04,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:26:04,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 9616 transitions. [2022-01-19 02:26:04,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 78.81967213114754) internal successors, (9616), 122 states have internal predecessors, (9616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:04,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 156.0) internal successors, (19188), 123 states have internal predecessors, (19188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:04,837 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 156.0) internal successors, (19188), 123 states have internal predecessors, (19188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:04,838 INFO L186 Difference]: Start difference. First operand has 389 places, 284 transitions, 1706 flow. Second operand 122 states and 9616 transitions. [2022-01-19 02:26:04,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1588 transitions, 18235 flow [2022-01-19 02:26:06,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1588 transitions, 13704 flow, removed 2122 selfloop flow, removed 55 redundant places. [2022-01-19 02:26:06,537 INFO L242 Difference]: Finished difference. Result has 441 places, 501 transitions, 4951 flow [2022-01-19 02:26:06,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=4951, PETRI_PLACES=441, PETRI_TRANSITIONS=501} [2022-01-19 02:26:06,538 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 300 predicate places. [2022-01-19 02:26:06,538 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 501 transitions, 4951 flow [2022-01-19 02:26:06,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 71.37179487179488) internal successors, (5567), 78 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:06,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:26:06,539 INFO L254 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] [2022-01-19 02:26:06,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 02:26:06,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 02:26:06,757 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:26:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:26:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash -618402877, now seen corresponding path program 3 times [2022-01-19 02:26:06,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:26:06,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671148624] [2022-01-19 02:26:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:26:06,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:26:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:26:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:26:07,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:26:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671148624] [2022-01-19 02:26:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671148624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:26:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198190055] [2022-01-19 02:26:07,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:26:07,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:26:07,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:26:07,679 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) [2022-01-19 02:26:07,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 02:26:07,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 02:26:07,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:26:07,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 02:26:07,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:26:08,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:26:08,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:26:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:26:09,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:26:09,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:26:09,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:26:09,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 02:26:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:26:09,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:26:09,804 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_176 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_176) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) is different from false [2022-01-19 02:26:09,824 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_175 (Array Int Int)) (v_ArrVal_176 (Array Int Int))) (<= (+ c_~d~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_175) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_176) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) is different from false [2022-01-19 02:26:10,851 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:10,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-19 02:26:10,860 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:10,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 702 treesize of output 678 [2022-01-19 02:26:10,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:10,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 330 [2022-01-19 02:26:10,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 614 treesize of output 518 [2022-01-19 02:26:10,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 518 treesize of output 470 [2022-01-19 02:26:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-01-19 02:26:12,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198190055] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:26:12,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:26:12,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 31] total 82 [2022-01-19 02:26:12,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811658971] [2022-01-19 02:26:12,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:26:12,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-19 02:26:12,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:26:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-19 02:26:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=5808, Unknown=21, NotChecked=314, Total=6642 [2022-01-19 02:26:12,124 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 156 [2022-01-19 02:26:12,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 501 transitions, 4951 flow. Second operand has 82 states, 82 states have (on average 74.21951219512195) internal successors, (6086), 82 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:12,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:26:12,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 156 [2022-01-19 02:26:12,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:26:29,093 INFO L129 PetriNetUnfolder]: 17595/34517 cut-off events. [2022-01-19 02:26:29,093 INFO L130 PetriNetUnfolder]: For 1117345/1118748 co-relation queries the response was YES. [2022-01-19 02:26:29,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248649 conditions, 34517 events. 17595/34517 cut-off events. For 1117345/1118748 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 351375 event pairs, 1892 based on Foata normal form. 162/34418 useless extension candidates. Maximal degree in co-relation 248533. Up to 5434 conditions per place. [2022-01-19 02:26:29,941 INFO L132 encePairwiseOnDemand]: 111/156 looper letters, 896 selfloop transitions, 597 changer transitions 92/1646 dead transitions. [2022-01-19 02:26:29,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 1646 transitions, 23909 flow [2022-01-19 02:26:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-19 02:26:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2022-01-19 02:26:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 7915 transitions. [2022-01-19 02:26:29,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5177263212977499 [2022-01-19 02:26:29,953 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 7915 transitions. [2022-01-19 02:26:29,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 7915 transitions. [2022-01-19 02:26:29,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:26:29,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 7915 transitions. [2022-01-19 02:26:29,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 80.76530612244898) internal successors, (7915), 98 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:29,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 156.0) internal successors, (15444), 99 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:29,981 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 156.0) internal successors, (15444), 99 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:29,982 INFO L186 Difference]: Start difference. First operand has 441 places, 501 transitions, 4951 flow. Second operand 98 states and 7915 transitions. [2022-01-19 02:26:29,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 1646 transitions, 23909 flow [2022-01-19 02:26:33,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1646 transitions, 20290 flow, removed 1619 selfloop flow, removed 60 redundant places. [2022-01-19 02:26:33,123 INFO L242 Difference]: Finished difference. Result has 492 places, 907 transitions, 10800 flow [2022-01-19 02:26:33,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3807, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=10800, PETRI_PLACES=492, PETRI_TRANSITIONS=907} [2022-01-19 02:26:33,124 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 351 predicate places. [2022-01-19 02:26:33,124 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 907 transitions, 10800 flow [2022-01-19 02:26:33,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 74.21951219512195) internal successors, (6086), 82 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:33,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:26:33,125 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2022-01-19 02:26:33,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 02:26:33,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:26:33,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:26:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:26:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1391996792, now seen corresponding path program 1 times [2022-01-19 02:26:33,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:26:33,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376817911] [2022-01-19 02:26:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:26:33,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:26:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:26:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 02:26:33,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:26:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376817911] [2022-01-19 02:26:33,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376817911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:26:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007041152] [2022-01-19 02:26:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:26:33,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:26:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:26:33,360 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) [2022-01-19 02:26:33,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 02:26:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:26:33,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 02:26:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:26:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 02:26:33,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:26:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 02:26:33,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007041152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:26:33,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:26:33,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2022-01-19 02:26:33,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238179533] [2022-01-19 02:26:33,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:26:33,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 02:26:33,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:26:33,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 02:26:33,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-19 02:26:33,770 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 156 [2022-01-19 02:26:33,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 907 transitions, 10800 flow. Second operand has 8 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:33,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:26:33,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 156 [2022-01-19 02:26:33,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:26:38,943 INFO L129 PetriNetUnfolder]: 7366/19511 cut-off events. [2022-01-19 02:26:38,944 INFO L130 PetriNetUnfolder]: For 796845/800357 co-relation queries the response was YES. [2022-01-19 02:26:39,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149570 conditions, 19511 events. 7366/19511 cut-off events. For 796845/800357 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 225087 event pairs, 3066 based on Foata normal form. 1833/20496 useless extension candidates. Maximal degree in co-relation 149445. Up to 5931 conditions per place. [2022-01-19 02:26:39,413 INFO L132 encePairwiseOnDemand]: 151/156 looper letters, 429 selfloop transitions, 31 changer transitions 9/872 dead transitions. [2022-01-19 02:26:39,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 872 transitions, 11494 flow [2022-01-19 02:26:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 02:26:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 02:26:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 963 transitions. [2022-01-19 02:26:39,415 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8818681318681318 [2022-01-19 02:26:39,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 963 transitions. [2022-01-19 02:26:39,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 963 transitions. [2022-01-19 02:26:39,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:26:39,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 963 transitions. [2022-01-19 02:26:39,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.57142857142858) internal successors, (963), 7 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:39,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:39,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:39,417 INFO L186 Difference]: Start difference. First operand has 492 places, 907 transitions, 10800 flow. Second operand 7 states and 963 transitions. [2022-01-19 02:26:39,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 872 transitions, 11494 flow [2022-01-19 02:26:41,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 872 transitions, 10286 flow, removed 500 selfloop flow, removed 46 redundant places. [2022-01-19 02:26:41,554 INFO L242 Difference]: Finished difference. Result has 457 places, 744 transitions, 7794 flow [2022-01-19 02:26:41,555 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7794, PETRI_PLACES=457, PETRI_TRANSITIONS=744} [2022-01-19 02:26:41,556 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 316 predicate places. [2022-01-19 02:26:41,556 INFO L470 AbstractCegarLoop]: Abstraction has has 457 places, 744 transitions, 7794 flow [2022-01-19 02:26:41,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:41,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:26:41,556 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2022-01-19 02:26:41,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 02:26:41,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:26:41,757 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:26:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:26:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash 851899706, now seen corresponding path program 2 times [2022-01-19 02:26:41,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:26:41,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894029590] [2022-01-19 02:26:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:26:41,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:26:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:26:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:26:42,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:26:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894029590] [2022-01-19 02:26:42,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894029590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:26:42,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292321178] [2022-01-19 02:26:42,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 02:26:42,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:26:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:26:42,486 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) [2022-01-19 02:26:42,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 02:26:42,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 02:26:42,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:26:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-19 02:26:42,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:26:43,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:26:43,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:26:43,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:26:43,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:26:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:26:44,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:26:44,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 02:26:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:26:44,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:26:44,700 WARN L838 $PredicateComparison]: unable to prove that (or (<= |c_thread1Thread1of1ForFork1_~w~0#1| 1) (forall ((v_ArrVal_245 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_245) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0))) is different from false [2022-01-19 02:26:45,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:45,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-19 02:26:45,822 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:45,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 192 [2022-01-19 02:26:45,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 140 [2022-01-19 02:26:45,831 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 116 [2022-01-19 02:26:45,847 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:26:45,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 89 [2022-01-19 02:26:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:26:46,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292321178] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:26:46,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:26:46,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 34, 33] total 88 [2022-01-19 02:26:46,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761846405] [2022-01-19 02:26:46,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:26:46,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-19 02:26:46,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:26:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-19 02:26:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=6873, Unknown=56, NotChecked=170, Total=7656 [2022-01-19 02:26:47,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 156 [2022-01-19 02:26:47,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 744 transitions, 7794 flow. Second operand has 88 states, 88 states have (on average 73.18181818181819) internal successors, (6440), 88 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:26:47,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:26:47,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 156 [2022-01-19 02:26:47,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:27:44,607 INFO L129 PetriNetUnfolder]: 58057/112188 cut-off events. [2022-01-19 02:27:44,607 INFO L130 PetriNetUnfolder]: For 3648631/3651236 co-relation queries the response was YES. [2022-01-19 02:27:48,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 836974 conditions, 112188 events. 58057/112188 cut-off events. For 3648631/3651236 co-relation queries the response was YES. Maximal size of possible extension queue 5125. Compared 1305120 event pairs, 4450 based on Foata normal form. 541/112236 useless extension candidates. Maximal degree in co-relation 836847. Up to 17701 conditions per place. [2022-01-19 02:27:48,618 INFO L132 encePairwiseOnDemand]: 106/156 looper letters, 1993 selfloop transitions, 2106 changer transitions 713/4872 dead transitions. [2022-01-19 02:27:48,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 4872 transitions, 73420 flow [2022-01-19 02:27:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2022-01-19 02:27:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2022-01-19 02:27:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 23103 transitions. [2022-01-19 02:27:48,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5071786090621707 [2022-01-19 02:27:48,634 INFO L72 ComplementDD]: Start complementDD. Operand 292 states and 23103 transitions. [2022-01-19 02:27:48,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 23103 transitions. [2022-01-19 02:27:48,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:27:48,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 292 states and 23103 transitions. [2022-01-19 02:27:48,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 293 states, 292 states have (on average 79.11986301369863) internal successors, (23103), 292 states have internal predecessors, (23103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:27:48,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 293 states, 293 states have (on average 156.0) internal successors, (45708), 293 states have internal predecessors, (45708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:27:48,696 INFO L81 ComplementDD]: Finished complementDD. Result has 293 states, 293 states have (on average 156.0) internal successors, (45708), 293 states have internal predecessors, (45708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:27:48,696 INFO L186 Difference]: Start difference. First operand has 457 places, 744 transitions, 7794 flow. Second operand 292 states and 23103 transitions. [2022-01-19 02:27:48,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 4872 transitions, 73420 flow [2022-01-19 02:28:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 4872 transitions, 72736 flow, removed 258 selfloop flow, removed 2 redundant places. [2022-01-19 02:28:17,535 INFO L242 Difference]: Finished difference. Result has 933 places, 2540 transitions, 41846 flow [2022-01-19 02:28:17,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=7749, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=292, PETRI_FLOW=41846, PETRI_PLACES=933, PETRI_TRANSITIONS=2540} [2022-01-19 02:28:17,536 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 792 predicate places. [2022-01-19 02:28:17,537 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 2540 transitions, 41846 flow [2022-01-19 02:28:17,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 73.18181818181819) internal successors, (6440), 88 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:28:17,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:28:17,538 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2022-01-19 02:28:17,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 02:28:17,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 02:28:17,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:28:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:28:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash -893251290, now seen corresponding path program 3 times [2022-01-19 02:28:17,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:28:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741992611] [2022-01-19 02:28:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:28:17,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:28:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:28:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:28:18,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:28:18,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741992611] [2022-01-19 02:28:18,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741992611] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:28:18,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065666680] [2022-01-19 02:28:18,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:28:18,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:28:18,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:28:18,328 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) [2022-01-19 02:28:18,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 02:28:18,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 02:28:18,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:28:18,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-19 02:28:18,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:28:18,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:28:18,492 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 02:28:18,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 02:28:18,874 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 02:28:18,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-19 02:28:19,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:28:19,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:28:19,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:28:19,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-19 02:28:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:28:19,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:28:20,232 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_283 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_283) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) (<= |c_thread1Thread1of1ForFork1_~w~0#1| 1)) is different from false [2022-01-19 02:28:20,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:28:20,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 47 [2022-01-19 02:28:20,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:28:20,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 108 [2022-01-19 02:28:20,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-01-19 02:28:20,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:28:20,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2022-01-19 02:28:22,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 02:28:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:28:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065666680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:28:22,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:28:22,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 28] total 76 [2022-01-19 02:28:22,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601316381] [2022-01-19 02:28:22,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:28:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-19 02:28:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:28:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-19 02:28:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=5129, Unknown=13, NotChecked=146, Total=5700 [2022-01-19 02:28:22,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 156 [2022-01-19 02:28:22,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 2540 transitions, 41846 flow. Second operand has 76 states, 76 states have (on average 73.47368421052632) internal successors, (5584), 76 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:28:22,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:28:22,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 156 [2022-01-19 02:28:22,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:30:30,550 INFO L129 PetriNetUnfolder]: 68476/141848 cut-off events. [2022-01-19 02:30:30,550 INFO L130 PetriNetUnfolder]: For 17397047/17409619 co-relation queries the response was YES. [2022-01-19 02:30:42,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1814794 conditions, 141848 events. 68476/141848 cut-off events. For 17397047/17409619 co-relation queries the response was YES. Maximal size of possible extension queue 6854. Compared 1810230 event pairs, 12779 based on Foata normal form. 2666/143197 useless extension candidates. Maximal degree in co-relation 1814481. Up to 28893 conditions per place. [2022-01-19 02:30:43,227 INFO L132 encePairwiseOnDemand]: 115/156 looper letters, 2560 selfloop transitions, 2635 changer transitions 244/5690 dead transitions. [2022-01-19 02:30:43,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1028 places, 5690 transitions, 118379 flow [2022-01-19 02:30:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-19 02:30:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2022-01-19 02:30:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 10633 transitions. [2022-01-19 02:30:43,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5086586299272866 [2022-01-19 02:30:43,266 INFO L72 ComplementDD]: Start complementDD. Operand 134 states and 10633 transitions. [2022-01-19 02:30:43,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 10633 transitions. [2022-01-19 02:30:43,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:30:43,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 134 states and 10633 transitions. [2022-01-19 02:30:43,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 135 states, 134 states have (on average 79.35074626865672) internal successors, (10633), 134 states have internal predecessors, (10633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:30:43,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 135 states, 135 states have (on average 156.0) internal successors, (21060), 135 states have internal predecessors, (21060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:30:43,315 INFO L81 ComplementDD]: Finished complementDD. Result has 135 states, 135 states have (on average 156.0) internal successors, (21060), 135 states have internal predecessors, (21060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:30:43,315 INFO L186 Difference]: Start difference. First operand has 933 places, 2540 transitions, 41846 flow. Second operand 134 states and 10633 transitions. [2022-01-19 02:30:43,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1028 places, 5690 transitions, 118379 flow [2022-01-19 02:34:51,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 966 places, 5690 transitions, 104110 flow, removed 7007 selfloop flow, removed 62 redundant places. [2022-01-19 02:34:51,638 INFO L242 Difference]: Finished difference. Result has 1029 places, 4046 transitions, 70893 flow [2022-01-19 02:34:51,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=34904, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=134, PETRI_FLOW=70893, PETRI_PLACES=1029, PETRI_TRANSITIONS=4046} [2022-01-19 02:34:51,656 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 888 predicate places. [2022-01-19 02:34:51,656 INFO L470 AbstractCegarLoop]: Abstraction has has 1029 places, 4046 transitions, 70893 flow [2022-01-19 02:34:51,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 73.47368421052632) internal successors, (5584), 76 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:34:51,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:34:51,657 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2022-01-19 02:34:51,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 02:34:51,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:34:51,871 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:34:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:34:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash -873736884, now seen corresponding path program 4 times [2022-01-19 02:34:51,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:34:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897312722] [2022-01-19 02:34:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:34:51,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:34:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:34:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:34:52,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:34:52,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897312722] [2022-01-19 02:34:52,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897312722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:34:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026799507] [2022-01-19 02:34:52,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:34:52,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:34:52,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:34:52,756 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) [2022-01-19 02:34:52,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 02:34:52,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:34:52,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:34:52,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-19 02:34:52,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:34:53,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 02:34:54,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 02:34:54,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:34:54,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:34:54,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 02:34:54,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 02:34:54,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 02:34:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:34:54,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:34:55,129 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_320 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) (not (< 0 |c_thread1Thread1of1ForFork1_~w~0#1|))) is different from false [2022-01-19 02:34:55,170 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_320 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) (<= |c_thread1Thread1of1ForFork1_#t~post1#1| 1)) is different from false [2022-01-19 02:34:55,177 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_320 (Array Int Int))) (<= (+ c_~d~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) c_~W~0)) (<= |c_thread1Thread1of1ForFork1_~w~0#1| 1)) is different from false [2022-01-19 02:34:55,195 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_319 (Array Int Int)) (v_ArrVal_320 (Array Int Int))) (<= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_319) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) c_~d~0) c_~W~0)) (<= |c_thread1Thread1of1ForFork1_~w~0#1| 1)) is different from false [2022-01-19 02:34:56,278 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:34:56,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2022-01-19 02:34:56,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:34:56,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 362 treesize of output 354 [2022-01-19 02:34:56,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 266 [2022-01-19 02:34:56,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 02:34:56,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 156 [2022-01-19 02:34:56,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 230 [2022-01-19 02:34:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:34:57,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026799507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:34:57,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:34:57,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33, 33] total 87 [2022-01-19 02:34:57,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156896387] [2022-01-19 02:34:57,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:34:57,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-19 02:34:57,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:34:57,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-19 02:34:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=6268, Unknown=23, NotChecked=660, Total=7482 [2022-01-19 02:34:57,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 156 [2022-01-19 02:34:57,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1029 places, 4046 transitions, 70893 flow. Second operand has 87 states, 87 states have (on average 75.1264367816092) internal successors, (6536), 87 states have internal predecessors, (6536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:34:57,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:34:57,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 156 [2022-01-19 02:34:57,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 02:35:30,599 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:35:30,600 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:35:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-01-19 02:35:30,839 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 02:35:30,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 02:35:31,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:35:31,055 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (87states, 73/156 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 168689 conditions, 10137 events (4645/10136 cut-off events. For 5716259/5726822 co-relation queries the response was YES. Maximal size of possible extension queue 3511. Compared 121579 event pairs, 762 based on Foata normal form. 554/14009 useless extension candidates. Maximal degree in co-relation 168337. Up to 2443 conditions per place.). [2022-01-19 02:35:31,056 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 02:35:31,056 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 02:35:31,056 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 02:35:31,059 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1] [2022-01-19 02:35:31,063 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:35:31,063 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:35:31,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:35:31 BasicIcfg [2022-01-19 02:35:31,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:35:31,077 INFO L158 Benchmark]: Toolchain (without parser) took 607669.54ms. Allocated memory was 333.4MB in the beginning and 15.2GB in the end (delta: 14.9GB). Free memory was 276.7MB in the beginning and 6.5GB in the end (delta: -6.3GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2022-01-19 02:35:31,077 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 333.4MB. Free memory is still 292.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:35:31,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.35ms. Allocated memory was 333.4MB in the beginning and 444.6MB in the end (delta: 111.1MB). Free memory was 276.5MB in the beginning and 413.9MB in the end (delta: -137.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.0GB. [2022-01-19 02:35:31,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.41ms. Allocated memory is still 444.6MB. Free memory was 413.9MB in the beginning and 411.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:35:31,078 INFO L158 Benchmark]: Boogie Preprocessor took 35.80ms. Allocated memory is still 444.6MB. Free memory was 411.9MB in the beginning and 409.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:35:31,078 INFO L158 Benchmark]: RCFGBuilder took 404.78ms. Allocated memory is still 444.6MB. Free memory was 409.8MB in the beginning and 388.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-19 02:35:31,078 INFO L158 Benchmark]: TraceAbstraction took 606922.40ms. Allocated memory was 444.6MB in the beginning and 15.2GB in the end (delta: 14.8GB). Free memory was 388.8MB in the beginning and 6.5GB in the end (delta: -6.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2022-01-19 02:35:31,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 333.4MB. Free memory is still 292.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 260.35ms. Allocated memory was 333.4MB in the beginning and 444.6MB in the end (delta: 111.1MB). Free memory was 276.5MB in the beginning and 413.9MB in the end (delta: -137.4MB). Peak memory consumption was 8.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.41ms. Allocated memory is still 444.6MB. Free memory was 413.9MB in the beginning and 411.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.80ms. Allocated memory is still 444.6MB. Free memory was 411.9MB in the beginning and 409.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 404.78ms. Allocated memory is still 444.6MB. Free memory was 409.8MB in the beginning and 388.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 606922.40ms. Allocated memory was 444.6MB in the beginning and 15.2GB in the end (delta: 14.8GB). Free memory was 388.8MB in the beginning and 6.5GB in the end (delta: -6.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (87states, 73/156 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 168689 conditions, 10137 events (4645/10136 cut-off events. For 5716259/5726822 co-relation queries the response was YES. Maximal size of possible extension queue 3511. Compared 121579 event pairs, 762 based on Foata normal form. 554/14009 useless extension candidates. Maximal degree in co-relation 168337. Up to 2443 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (87states, 73/156 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 168689 conditions, 10137 events (4645/10136 cut-off events. For 5716259/5726822 co-relation queries the response was YES. Maximal size of possible extension queue 3511. Compared 121579 event pairs, 762 based on Foata normal form. 554/14009 useless extension candidates. Maximal degree in co-relation 168337. Up to 2443 conditions per place.). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (87states, 73/156 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 168689 conditions, 10137 events (4645/10136 cut-off events. For 5716259/5726822 co-relation queries the response was YES. Maximal size of possible extension queue 3511. Compared 121579 event pairs, 762 based on Foata normal form. 554/14009 useless extension candidates. Maximal degree in co-relation 168337. Up to 2443 conditions per place.). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (87states, 73/156 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 168689 conditions, 10137 events (4645/10136 cut-off events. For 5716259/5726822 co-relation queries the response was YES. Maximal size of possible extension queue 3511. Compared 121579 event pairs, 762 based on Foata normal form. 554/14009 useless extension candidates. Maximal degree in co-relation 168337. Up to 2443 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 173 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: 606.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 573.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15352 SdHoareTripleChecker+Valid, 15.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15352 mSDsluCounter, 15769 SdHoareTripleChecker+Invalid, 12.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 26092 IncrementalHoareTripleChecker+Unchecked, 27324 mSDsCounter, 2662 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30675 IncrementalHoareTripleChecker+Invalid, 59429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2662 mSolverCounterUnsat, 429 mSDtfsCounter, 30675 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3069 GetRequests, 1581 SyntacticMatches, 116 SemanticMatches, 1372 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 127755 ImplicationChecksByTransitivity, 80.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70893occurred in iteration=11, InterpolantAutomatonStates: 835, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 2411 NumberOfCodeBlocks, 2411 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 3303 ConstructedInterpolants, 251 QuantifiedInterpolants, 48351 SizeOfPredicates, 216 NumberOfNonLiveVariables, 2221 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 22/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2022-01-19 02:35:31,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !SESSION 2022-01-19 02:25:20.675 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -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-prod-cons.wvr.c Command-line arguments: -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-prod-cons.wvr.c !ENTRY org.eclipse.osgi 4 0 2022-01-19 02:35:31.300 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5e2eac6/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5e2eac6/.metadata/.log.