/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:32:32,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:32:32,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:32:32,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:32:32,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:32:32,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:32:32,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:32:32,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:32:32,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:32:32,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:32:32,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:32:32,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:32:32,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:32:32,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:32:32,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:32:32,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:32:32,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:32:32,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:32:32,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:32:32,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:32:32,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:32:32,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:32:32,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:32:32,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:32:32,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:32:32,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:32:32,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:32:32,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:32:32,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:32:32,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:32:32,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:32:32,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:32:32,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:32:32,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:32:32,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:32:32,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:32:32,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:32:32,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:32:32,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:32:32,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:32:32,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:32:32,674 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-Before.epf [2022-01-19 07:32:32,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:32:32,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:32:32,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:32:32,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:32:32,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:32:32,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:32:32,698 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:32:32,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:32:32,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:32:32,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:32:32,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:32:32,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:32:32,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:32:32,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:32:32,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:32:32,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:32:32,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:32:32,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:32:32,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:32:32,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:32:32,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:32:32,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:32:32,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:32:32,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:32:32,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:32:32,705 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:32:32,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:32:32,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:32:32,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:32:32,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:32:32,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:32:32,966 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:32:32,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-01-19 07:32:33,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2d527d0/2f692c868dce48c7b19603187a9ba663/FLAG39d6b52f0 [2022-01-19 07:32:33,389 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:32:33,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2022-01-19 07:32:33,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2d527d0/2f692c868dce48c7b19603187a9ba663/FLAG39d6b52f0 [2022-01-19 07:32:33,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e2d527d0/2f692c868dce48c7b19603187a9ba663 [2022-01-19 07:32:33,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:32:33,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:32:33,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:32:33,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:32:33,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:32:33,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416a01e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33, skipping insertion in model container [2022-01-19 07:32:33,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:32:33,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:32:33,702 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/parallel-lamport.wvr.c[4210,4223] [2022-01-19 07:32:33,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:32:33,723 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:32:33,756 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/parallel-lamport.wvr.c[4210,4223] [2022-01-19 07:32:33,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:32:33,770 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:32:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33 WrapperNode [2022-01-19 07:32:33,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:32:33,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:32:33,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:32:33,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:32:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,805 INFO L137 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-01-19 07:32:33,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:32:33,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:32:33,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:32:33,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:32:33,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:32:33,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:32:33,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:32:33,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:32:33,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (1/1) ... [2022-01-19 07:32:33,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:32:33,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:33,859 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 07:32:33,863 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 07:32:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:32:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:32:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:32:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:32:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:32:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:32:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:32:33,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:32:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:32:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:32:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:32:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 07:32:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 07:32:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 07:32:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:32:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:32:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:32:33,910 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 07:32:34,051 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:32:34,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:32:34,387 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:32:34,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:32:34,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-19 07:32:34,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:32:34 BoogieIcfgContainer [2022-01-19 07:32:34,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:32:34,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:32:34,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:32:34,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:32:34,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:32:33" (1/3) ... [2022-01-19 07:32:34,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781b7c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:32:34, skipping insertion in model container [2022-01-19 07:32:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:32:33" (2/3) ... [2022-01-19 07:32:34,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781b7c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:32:34, skipping insertion in model container [2022-01-19 07:32:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:32:34" (3/3) ... [2022-01-19 07:32:34,483 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-01-19 07:32:34,488 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:32:34,488 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:32:34,488 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:32:34,531 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,534 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,535 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,535 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,536 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,537 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,538 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,539 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,540 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,541 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,545 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,546 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,547 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:32:34,553 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:32:34,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:32:34,590 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 07:32:34,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:32:34,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-01-19 07:32:34,683 INFO L129 PetriNetUnfolder]: 7/183 cut-off events. [2022-01-19 07:32:34,683 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:32:34,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-01-19 07:32:34,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-01-19 07:32:34,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-01-19 07:32:34,744 INFO L129 PetriNetUnfolder]: 7/171 cut-off events. [2022-01-19 07:32:34,744 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:32:34,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:34,745 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, 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 07:32:34,746 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 07:32:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1585459092, now seen corresponding path program 1 times [2022-01-19 07:32:34,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924284005] [2022-01-19 07:32:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:34,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:35,037 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 07:32:35,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924284005] [2022-01-19 07:32:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924284005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:35,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:35,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 07:32:35,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72735367] [2022-01-19 07:32:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:35,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 07:32:35,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:35,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 07:32:35,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 07:32:35,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 186 [2022-01-19 07:32:35,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 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 07:32:35,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:35,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 186 [2022-01-19 07:32:35,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:35,256 INFO L129 PetriNetUnfolder]: 215/670 cut-off events. [2022-01-19 07:32:35,256 INFO L130 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-01-19 07:32:35,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 670 events. 215/670 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3318 event pairs, 214 based on Foata normal form. 6/665 useless extension candidates. Maximal degree in co-relation 942. Up to 370 conditions per place. [2022-01-19 07:32:35,266 INFO L132 encePairwiseOnDemand]: 180/186 looper letters, 17 selfloop transitions, 0 changer transitions 5/166 dead transitions. [2022-01-19 07:32:35,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 166 transitions, 384 flow [2022-01-19 07:32:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 07:32:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 07:32:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 347 transitions. [2022-01-19 07:32:35,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9327956989247311 [2022-01-19 07:32:35,281 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 347 transitions. [2022-01-19 07:32:35,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 347 transitions. [2022-01-19 07:32:35,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:35,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 347 transitions. [2022-01-19 07:32:35,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 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 07:32:35,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:35,293 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:35,295 INFO L186 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 2 states and 347 transitions. [2022-01-19 07:32:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 166 transitions, 384 flow [2022-01-19 07:32:35,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 166 transitions, 372 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:32:35,302 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 328 flow [2022-01-19 07:32:35,304 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-01-19 07:32:35,306 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, -5 predicate places. [2022-01-19 07:32:35,306 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 328 flow [2022-01-19 07:32:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 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 07:32:35,308 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:35,308 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, 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 07:32:35,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:32:35,309 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 07:32:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1309777273, now seen corresponding path program 1 times [2022-01-19 07:32:35,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:35,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989063966] [2022-01-19 07:32:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:35,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:35,664 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 07:32:35,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:35,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989063966] [2022-01-19 07:32:35,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989063966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:35,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:35,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:32:35,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652466299] [2022-01-19 07:32:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:32:35,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:32:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:32:35,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 186 [2022-01-19 07:32:35,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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 07:32:35,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:35,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 186 [2022-01-19 07:32:35,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:35,961 INFO L129 PetriNetUnfolder]: 275/841 cut-off events. [2022-01-19 07:32:35,962 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-01-19 07:32:35,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 841 events. 275/841 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4309 event pairs, 274 based on Foata normal form. 41/873 useless extension candidates. Maximal degree in co-relation 1400. Up to 382 conditions per place. [2022-01-19 07:32:35,970 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 34 selfloop transitions, 6 changer transitions 13/178 dead transitions. [2022-01-19 07:32:35,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 178 transitions, 471 flow [2022-01-19 07:32:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:32:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:32:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1057 transitions. [2022-01-19 07:32:35,976 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8118279569892473 [2022-01-19 07:32:35,976 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1057 transitions. [2022-01-19 07:32:35,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1057 transitions. [2022-01-19 07:32:35,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:35,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1057 transitions. [2022-01-19 07:32:35,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 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 07:32:35,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:35,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:35,988 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 328 flow. Second operand 7 states and 1057 transitions. [2022-01-19 07:32:35,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 178 transitions, 471 flow [2022-01-19 07:32:35,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 178 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:32:35,996 INFO L242 Difference]: Finished difference. Result has 173 places, 162 transitions, 354 flow [2022-01-19 07:32:35,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=173, PETRI_TRANSITIONS=162} [2022-01-19 07:32:35,997 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, -2 predicate places. [2022-01-19 07:32:35,997 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 162 transitions, 354 flow [2022-01-19 07:32:35,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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 07:32:35,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:35,998 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:35,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:32:35,999 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 07:32:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash 710443097, now seen corresponding path program 1 times [2022-01-19 07:32:36,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:36,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016874038] [2022-01-19 07:32:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:36,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:36,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:36,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016874038] [2022-01-19 07:32:36,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016874038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:36,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:36,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:32:36,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624748213] [2022-01-19 07:32:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:36,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:32:36,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:32:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:32:36,191 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-01-19 07:32:36,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 162 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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 07:32:36,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:36,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-01-19 07:32:36,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:36,684 INFO L129 PetriNetUnfolder]: 1031/2322 cut-off events. [2022-01-19 07:32:36,684 INFO L130 PetriNetUnfolder]: For 213/213 co-relation queries the response was YES. [2022-01-19 07:32:36,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2322 events. 1031/2322 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15973 event pairs, 364 based on Foata normal form. 25/2314 useless extension candidates. Maximal degree in co-relation 4489. Up to 511 conditions per place. [2022-01-19 07:32:36,700 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 91 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2022-01-19 07:32:36,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 768 flow [2022-01-19 07:32:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:32:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:32:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1442 transitions. [2022-01-19 07:32:36,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8614097968936678 [2022-01-19 07:32:36,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1442 transitions. [2022-01-19 07:32:36,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1442 transitions. [2022-01-19 07:32:36,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:36,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1442 transitions. [2022-01-19 07:32:36,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.22222222222223) internal successors, (1442), 9 states have internal predecessors, (1442), 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 07:32:36,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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 07:32:36,712 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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 07:32:36,712 INFO L186 Difference]: Start difference. First operand has 173 places, 162 transitions, 354 flow. Second operand 9 states and 1442 transitions. [2022-01-19 07:32:36,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 768 flow [2022-01-19 07:32:36,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 240 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:32:36,717 INFO L242 Difference]: Finished difference. Result has 181 places, 176 transitions, 448 flow [2022-01-19 07:32:36,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=181, PETRI_TRANSITIONS=176} [2022-01-19 07:32:36,718 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 6 predicate places. [2022-01-19 07:32:36,718 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 176 transitions, 448 flow [2022-01-19 07:32:36,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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 07:32:36,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:36,719 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:36,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:32:36,720 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 07:32:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash 446910751, now seen corresponding path program 2 times [2022-01-19 07:32:36,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:36,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956539835] [2022-01-19 07:32:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:36,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:37,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:37,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956539835] [2022-01-19 07:32:37,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956539835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:32:37,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885141887] [2022-01-19 07:32:37,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:32:37,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:37,655 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 07:32:37,667 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 07:32:37,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 07:32:37,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:32:37,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-19 07:32:37,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:32:38,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:32:38,451 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 07:32:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:38,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:32:38,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885141887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:38,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:32:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 33 [2022-01-19 07:32:38,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472810560] [2022-01-19 07:32:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 07:32:38,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 07:32:38,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2022-01-19 07:32:38,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-01-19 07:32:38,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 176 transitions, 448 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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 07:32:38,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:38,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-01-19 07:32:38,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:39,464 INFO L129 PetriNetUnfolder]: 2890/6198 cut-off events. [2022-01-19 07:32:39,464 INFO L130 PetriNetUnfolder]: For 948/966 co-relation queries the response was YES. [2022-01-19 07:32:39,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 6198 events. 2890/6198 cut-off events. For 948/966 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 51657 event pairs, 398 based on Foata normal form. 5/6068 useless extension candidates. Maximal degree in co-relation 12472. Up to 2776 conditions per place. [2022-01-19 07:32:39,511 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 103 selfloop transitions, 47 changer transitions 4/272 dead transitions. [2022-01-19 07:32:39,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 272 transitions, 996 flow [2022-01-19 07:32:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 07:32:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 07:32:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1895 transitions. [2022-01-19 07:32:39,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6792114695340502 [2022-01-19 07:32:39,516 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1895 transitions. [2022-01-19 07:32:39,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1895 transitions. [2022-01-19 07:32:39,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:39,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1895 transitions. [2022-01-19 07:32:39,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.33333333333333) internal successors, (1895), 15 states have internal predecessors, (1895), 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 07:32:39,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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 07:32:39,525 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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 07:32:39,526 INFO L186 Difference]: Start difference. First operand has 181 places, 176 transitions, 448 flow. Second operand 15 states and 1895 transitions. [2022-01-19 07:32:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 272 transitions, 996 flow [2022-01-19 07:32:39,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 272 transitions, 996 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:32:39,539 INFO L242 Difference]: Finished difference. Result has 202 places, 221 transitions, 778 flow [2022-01-19 07:32:39,540 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=778, PETRI_PLACES=202, PETRI_TRANSITIONS=221} [2022-01-19 07:32:39,540 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 27 predicate places. [2022-01-19 07:32:39,540 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 221 transitions, 778 flow [2022-01-19 07:32:39,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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 07:32:39,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:39,541 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:39,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:32:39,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:39,769 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 07:32:39,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash 795173689, now seen corresponding path program 3 times [2022-01-19 07:32:39,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:39,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243102691] [2022-01-19 07:32:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:39,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:39,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:39,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243102691] [2022-01-19 07:32:39,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243102691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:39,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:39,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:32:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794148488] [2022-01-19 07:32:39,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:39,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:32:39,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:32:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:32:39,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-01-19 07:32:39,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 221 transitions, 778 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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 07:32:39,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:39,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-01-19 07:32:39,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:40,658 INFO L129 PetriNetUnfolder]: 2499/5476 cut-off events. [2022-01-19 07:32:40,658 INFO L130 PetriNetUnfolder]: For 7497/7884 co-relation queries the response was YES. [2022-01-19 07:32:40,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17081 conditions, 5476 events. 2499/5476 cut-off events. For 7497/7884 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44395 event pairs, 602 based on Foata normal form. 112/5390 useless extension candidates. Maximal degree in co-relation 17062. Up to 1650 conditions per place. [2022-01-19 07:32:40,794 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 186 selfloop transitions, 24 changer transitions 0/354 dead transitions. [2022-01-19 07:32:40,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 354 transitions, 1884 flow [2022-01-19 07:32:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:32:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:32:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1439 transitions. [2022-01-19 07:32:40,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8596176821983273 [2022-01-19 07:32:40,798 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1439 transitions. [2022-01-19 07:32:40,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1439 transitions. [2022-01-19 07:32:40,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:40,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1439 transitions. [2022-01-19 07:32:40,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.88888888888889) internal successors, (1439), 9 states have internal predecessors, (1439), 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 07:32:40,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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 07:32:40,804 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 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 07:32:40,804 INFO L186 Difference]: Start difference. First operand has 202 places, 221 transitions, 778 flow. Second operand 9 states and 1439 transitions. [2022-01-19 07:32:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 354 transitions, 1884 flow [2022-01-19 07:32:40,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 354 transitions, 1858 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-01-19 07:32:40,826 INFO L242 Difference]: Finished difference. Result has 205 places, 227 transitions, 873 flow [2022-01-19 07:32:40,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=873, PETRI_PLACES=205, PETRI_TRANSITIONS=227} [2022-01-19 07:32:40,827 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 30 predicate places. [2022-01-19 07:32:40,827 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 227 transitions, 873 flow [2022-01-19 07:32:40,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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 07:32:40,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:40,828 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:40,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:32:40,828 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 07:32:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 250132429, now seen corresponding path program 4 times [2022-01-19 07:32:40,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604069433] [2022-01-19 07:32:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:40,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:40,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:40,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604069433] [2022-01-19 07:32:40,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604069433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:40,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:32:40,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:32:40,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135283881] [2022-01-19 07:32:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:40,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:32:40,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:32:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:32:40,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 186 [2022-01-19 07:32:40,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 227 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 07:32:40,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:40,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 186 [2022-01-19 07:32:40,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:41,558 INFO L129 PetriNetUnfolder]: 1872/4606 cut-off events. [2022-01-19 07:32:41,558 INFO L130 PetriNetUnfolder]: For 6280/6753 co-relation queries the response was YES. [2022-01-19 07:32:41,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14241 conditions, 4606 events. 1872/4606 cut-off events. For 6280/6753 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38766 event pairs, 815 based on Foata normal form. 35/4439 useless extension candidates. Maximal degree in co-relation 14220. Up to 2459 conditions per place. [2022-01-19 07:32:41,601 INFO L132 encePairwiseOnDemand]: 183/186 looper letters, 73 selfloop transitions, 2 changer transitions 0/249 dead transitions. [2022-01-19 07:32:41,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 249 transitions, 1145 flow [2022-01-19 07:32:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:32:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:32:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-01-19 07:32:41,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9032258064516129 [2022-01-19 07:32:41,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-01-19 07:32:41,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-01-19 07:32:41,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:41,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-01-19 07:32:41,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 07:32:41,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 07:32:41,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 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 07:32:41,606 INFO L186 Difference]: Start difference. First operand has 205 places, 227 transitions, 873 flow. Second operand 3 states and 504 transitions. [2022-01-19 07:32:41,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 249 transitions, 1145 flow [2022-01-19 07:32:41,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 249 transitions, 1109 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-01-19 07:32:41,680 INFO L242 Difference]: Finished difference. Result has 204 places, 227 transitions, 845 flow [2022-01-19 07:32:41,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=845, PETRI_PLACES=204, PETRI_TRANSITIONS=227} [2022-01-19 07:32:41,681 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 29 predicate places. [2022-01-19 07:32:41,681 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 227 transitions, 845 flow [2022-01-19 07:32:41,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 07:32:41,681 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:41,681 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:41,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:32:41,682 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 07:32:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2092178769, now seen corresponding path program 5 times [2022-01-19 07:32:41,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:41,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581572562] [2022-01-19 07:32:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:41,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:42,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:42,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581572562] [2022-01-19 07:32:42,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581572562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:32:42,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570884824] [2022-01-19 07:32:42,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 07:32:42,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:42,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:42,466 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 07:32:42,499 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 07:32:42,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:32:42,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:32:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 07:32:42,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:32:44,377 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 15 treesize of output 7 [2022-01-19 07:32:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:44,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:32:44,704 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:32:44,705 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-01-19 07:32:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:45,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570884824] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:32:45,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:32:45,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 23] total 64 [2022-01-19 07:32:45,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310395398] [2022-01-19 07:32:45,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:32:45,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-19 07:32:45,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-19 07:32:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=3490, Unknown=0, NotChecked=0, Total=4032 [2022-01-19 07:32:46,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-01-19 07:32:46,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 227 transitions, 845 flow. Second operand has 64 states, 64 states have (on average 101.828125) internal successors, (6517), 64 states have internal predecessors, (6517), 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 07:32:46,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:46,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-01-19 07:32:46,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:51,517 INFO L129 PetriNetUnfolder]: 6150/12750 cut-off events. [2022-01-19 07:32:51,517 INFO L130 PetriNetUnfolder]: For 19029/19934 co-relation queries the response was YES. [2022-01-19 07:32:51,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42560 conditions, 12750 events. 6150/12750 cut-off events. For 19029/19934 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 115257 event pairs, 702 based on Foata normal form. 99/12647 useless extension candidates. Maximal degree in co-relation 42540. Up to 4292 conditions per place. [2022-01-19 07:32:51,634 INFO L132 encePairwiseOnDemand]: 134/186 looper letters, 337 selfloop transitions, 155 changer transitions 41/639 dead transitions. [2022-01-19 07:32:51,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 639 transitions, 4198 flow [2022-01-19 07:32:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-19 07:32:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-01-19 07:32:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6623 transitions. [2022-01-19 07:32:51,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5651988393923878 [2022-01-19 07:32:51,650 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6623 transitions. [2022-01-19 07:32:51,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6623 transitions. [2022-01-19 07:32:51,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:51,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6623 transitions. [2022-01-19 07:32:51,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 105.12698412698413) internal successors, (6623), 63 states have internal predecessors, (6623), 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 07:32:51,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 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 07:32:51,780 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 186.0) internal successors, (11904), 64 states have internal predecessors, (11904), 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 07:32:51,780 INFO L186 Difference]: Start difference. First operand has 204 places, 227 transitions, 845 flow. Second operand 63 states and 6623 transitions. [2022-01-19 07:32:51,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 639 transitions, 4198 flow [2022-01-19 07:32:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 639 transitions, 4194 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:32:51,846 INFO L242 Difference]: Finished difference. Result has 300 places, 383 transitions, 2373 flow [2022-01-19 07:32:51,847 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2373, PETRI_PLACES=300, PETRI_TRANSITIONS=383} [2022-01-19 07:32:51,848 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 125 predicate places. [2022-01-19 07:32:51,848 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 383 transitions, 2373 flow [2022-01-19 07:32:51,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 101.828125) internal successors, (6517), 64 states have internal predecessors, (6517), 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 07:32:51,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:51,861 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:51,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 07:32:52,075 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 07:32:52,076 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 07:32:52,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash -886467297, now seen corresponding path program 6 times [2022-01-19 07:32:52,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:52,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645876143] [2022-01-19 07:32:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:52,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:52,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:52,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645876143] [2022-01-19 07:32:52,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645876143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:32:52,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821073648] [2022-01-19 07:32:52,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 07:32:52,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:52,497 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 07:32:52,498 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 07:32:52,609 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-19 07:32:52,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:32:52,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-19 07:32:52,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:32:52,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:32:52,982 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 07:32:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:53,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:32:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821073648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:32:53,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:32:53,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2022-01-19 07:32:53,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593334976] [2022-01-19 07:32:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:32:53,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 07:32:53,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 07:32:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 07:32:53,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-01-19 07:32:53,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 383 transitions, 2373 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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 07:32:53,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:53,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-01-19 07:32:53,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:55,517 INFO L129 PetriNetUnfolder]: 6972/14542 cut-off events. [2022-01-19 07:32:55,518 INFO L130 PetriNetUnfolder]: For 60447/62929 co-relation queries the response was YES. [2022-01-19 07:32:55,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67347 conditions, 14542 events. 6972/14542 cut-off events. For 60447/62929 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 134953 event pairs, 825 based on Foata normal form. 360/14635 useless extension candidates. Maximal degree in co-relation 67291. Up to 6383 conditions per place. [2022-01-19 07:32:55,728 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 282 selfloop transitions, 130 changer transitions 9/554 dead transitions. [2022-01-19 07:32:55,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 554 transitions, 4781 flow [2022-01-19 07:32:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 07:32:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 07:32:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2016 transitions. [2022-01-19 07:32:55,732 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2022-01-19 07:32:55,733 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2016 transitions. [2022-01-19 07:32:55,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2016 transitions. [2022-01-19 07:32:55,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:55,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2016 transitions. [2022-01-19 07:32:55,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.0) internal successors, (2016), 16 states have internal predecessors, (2016), 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 07:32:55,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:55,740 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:55,740 INFO L186 Difference]: Start difference. First operand has 300 places, 383 transitions, 2373 flow. Second operand 16 states and 2016 transitions. [2022-01-19 07:32:55,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 554 transitions, 4781 flow [2022-01-19 07:32:56,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 554 transitions, 4575 flow, removed 89 selfloop flow, removed 20 redundant places. [2022-01-19 07:32:56,072 INFO L242 Difference]: Finished difference. Result has 295 places, 446 transitions, 3263 flow [2022-01-19 07:32:56,072 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3263, PETRI_PLACES=295, PETRI_TRANSITIONS=446} [2022-01-19 07:32:56,075 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 120 predicate places. [2022-01-19 07:32:56,075 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 446 transitions, 3263 flow [2022-01-19 07:32:56,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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 07:32:56,078 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:56,079 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, 1, 1, 1, 1, 1, 1, 1, 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 07:32:56,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 07:32:56,301 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 07:32:56,301 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 07:32:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2144886995, now seen corresponding path program 7 times [2022-01-19 07:32:56,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193009181] [2022-01-19 07:32:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:56,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:56,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:56,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193009181] [2022-01-19 07:32:56,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193009181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:32:56,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336901055] [2022-01-19 07:32:56,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 07:32:56,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:56,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:56,976 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 07:32:56,977 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 07:32:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:57,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-19 07:32:57,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:32:58,160 INFO L353 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-01-19 07:32:58,161 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-01-19 07:32:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:58,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:32:58,606 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:32:58,606 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2022-01-19 07:32:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:32:59,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336901055] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:32:59,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:32:59,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 19] total 53 [2022-01-19 07:32:59,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211365100] [2022-01-19 07:32:59,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:32:59,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-19 07:32:59,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:32:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-19 07:32:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2351, Unknown=0, NotChecked=0, Total=2756 [2022-01-19 07:32:59,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-01-19 07:32:59,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 446 transitions, 3263 flow. Second operand has 53 states, 53 states have (on average 102.16981132075472) internal successors, (5415), 53 states have internal predecessors, (5415), 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 07:32:59,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:32:59,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-01-19 07:32:59,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:33:07,776 INFO L129 PetriNetUnfolder]: 12558/27648 cut-off events. [2022-01-19 07:33:07,776 INFO L130 PetriNetUnfolder]: For 166717/169207 co-relation queries the response was YES. [2022-01-19 07:33:08,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143315 conditions, 27648 events. 12558/27648 cut-off events. For 166717/169207 co-relation queries the response was YES. Maximal size of possible extension queue 1631. Compared 299147 event pairs, 834 based on Foata normal form. 460/27761 useless extension candidates. Maximal degree in co-relation 143258. Up to 8897 conditions per place. [2022-01-19 07:33:08,242 INFO L132 encePairwiseOnDemand]: 138/186 looper letters, 789 selfloop transitions, 535 changer transitions 45/1475 dead transitions. [2022-01-19 07:33:08,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1475 transitions, 16394 flow [2022-01-19 07:33:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 07:33:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-01-19 07:33:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 7915 transitions. [2022-01-19 07:33:08,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5750508573089218 [2022-01-19 07:33:08,255 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 7915 transitions. [2022-01-19 07:33:08,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 7915 transitions. [2022-01-19 07:33:08,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:33:08,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 7915 transitions. [2022-01-19 07:33:08,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 106.95945945945945) internal successors, (7915), 74 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 07:33:08,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 186.0) internal successors, (13950), 75 states have internal predecessors, (13950), 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 07:33:08,289 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 186.0) internal successors, (13950), 75 states have internal predecessors, (13950), 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 07:33:08,289 INFO L186 Difference]: Start difference. First operand has 295 places, 446 transitions, 3263 flow. Second operand 74 states and 7915 transitions. [2022-01-19 07:33:08,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1475 transitions, 16394 flow [2022-01-19 07:33:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1475 transitions, 16074 flow, removed 145 selfloop flow, removed 7 redundant places. [2022-01-19 07:33:08,959 INFO L242 Difference]: Finished difference. Result has 399 places, 945 transitions, 10409 flow [2022-01-19 07:33:08,960 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=10409, PETRI_PLACES=399, PETRI_TRANSITIONS=945} [2022-01-19 07:33:08,960 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 224 predicate places. [2022-01-19 07:33:08,960 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 945 transitions, 10409 flow [2022-01-19 07:33:08,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 102.16981132075472) internal successors, (5415), 53 states have internal predecessors, (5415), 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 07:33:08,962 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:33:08,962 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, 1, 1, 1, 1, 1, 1, 1, 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 07:33:08,988 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 07:33:09,185 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 07:33:09,186 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 07:33:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:33:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 872739589, now seen corresponding path program 8 times [2022-01-19 07:33:09,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:33:09,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971608222] [2022-01-19 07:33:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:33:09,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:33:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:33:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:33:09,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:33:09,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971608222] [2022-01-19 07:33:09,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971608222] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:33:09,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037172780] [2022-01-19 07:33:09,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:33:09,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:33:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:33:09,827 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 07:33:09,827 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 07:33:09,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 07:33:09,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:33:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-19 07:33:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:33:09,957 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 07:33:09,981 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 07:33:09,981 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 11 treesize of output 11 [2022-01-19 07:33:10,291 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 11 treesize of output 7 [2022-01-19 07:33:10,320 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 07:33:10,527 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:10,527 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 07:33:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:33:10,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:33:10,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037172780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:33:10,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:33:10,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [26] total 37 [2022-01-19 07:33:10,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223351780] [2022-01-19 07:33:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:33:10,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 07:33:10,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:33:10,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 07:33:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 07:33:10,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 186 [2022-01-19 07:33:10,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 945 transitions, 10409 flow. Second operand has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 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 07:33:10,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:33:10,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 186 [2022-01-19 07:33:10,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:33:19,334 INFO L129 PetriNetUnfolder]: 13537/30386 cut-off events. [2022-01-19 07:33:19,335 INFO L130 PetriNetUnfolder]: For 474923/479675 co-relation queries the response was YES. [2022-01-19 07:33:19,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210759 conditions, 30386 events. 13537/30386 cut-off events. For 474923/479675 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 337927 event pairs, 1385 based on Foata normal form. 802/30716 useless extension candidates. Maximal degree in co-relation 210663. Up to 17131 conditions per place. [2022-01-19 07:33:19,858 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 855 selfloop transitions, 224 changer transitions 34/1238 dead transitions. [2022-01-19 07:33:19,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1238 transitions, 17043 flow [2022-01-19 07:33:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 07:33:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 07:33:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2785 transitions. [2022-01-19 07:33:19,863 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5989247311827957 [2022-01-19 07:33:19,863 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2785 transitions. [2022-01-19 07:33:19,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2785 transitions. [2022-01-19 07:33:19,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:33:19,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2785 transitions. [2022-01-19 07:33:19,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.4) internal successors, (2785), 25 states have internal predecessors, (2785), 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 07:33:19,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 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 07:33:19,876 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 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 07:33:19,876 INFO L186 Difference]: Start difference. First operand has 399 places, 945 transitions, 10409 flow. Second operand 25 states and 2785 transitions. [2022-01-19 07:33:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1238 transitions, 17043 flow [2022-01-19 07:33:23,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1238 transitions, 16362 flow, removed 317 selfloop flow, removed 27 redundant places. [2022-01-19 07:33:23,402 INFO L242 Difference]: Finished difference. Result has 405 places, 1030 transitions, 11853 flow [2022-01-19 07:33:23,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9834, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11853, PETRI_PLACES=405, PETRI_TRANSITIONS=1030} [2022-01-19 07:33:23,404 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 230 predicate places. [2022-01-19 07:33:23,404 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 1030 transitions, 11853 flow [2022-01-19 07:33:23,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 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 07:33:23,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:33:23,405 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, 1, 1, 1, 1, 1, 1, 1, 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 07:33:23,421 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 07:33:23,605 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 07:33:23,606 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 07:33:23,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:33:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash 422036635, now seen corresponding path program 9 times [2022-01-19 07:33:23,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:33:23,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810385548] [2022-01-19 07:33:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:33:23,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:33:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:33:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:33:24,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:33:24,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810385548] [2022-01-19 07:33:24,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810385548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:33:24,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959772254] [2022-01-19 07:33:24,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:33:24,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:33:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:33:24,184 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 07:33:24,184 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 07:33:24,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 07:33:24,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:33:24,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 07:33:24,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:33:24,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:24,745 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-01-19 07:33:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:33:24,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:33:24,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959772254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:33:24,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:33:24,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [26] total 34 [2022-01-19 07:33:24,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347945192] [2022-01-19 07:33:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:33:24,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 07:33:24,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:33:24,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 07:33:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 07:33:24,783 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-01-19 07:33:24,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 1030 transitions, 11853 flow. Second operand has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 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 07:33:24,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:33:24,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-01-19 07:33:24,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:33:37,176 INFO L129 PetriNetUnfolder]: 20072/40911 cut-off events. [2022-01-19 07:33:37,176 INFO L130 PetriNetUnfolder]: For 735583/739467 co-relation queries the response was YES. [2022-01-19 07:33:38,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297411 conditions, 40911 events. 20072/40911 cut-off events. For 735583/739467 co-relation queries the response was YES. Maximal size of possible extension queue 2145. Compared 433888 event pairs, 2600 based on Foata normal form. 1033/41674 useless extension candidates. Maximal degree in co-relation 297305. Up to 28177 conditions per place. [2022-01-19 07:33:38,272 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 947 selfloop transitions, 288 changer transitions 18/1371 dead transitions. [2022-01-19 07:33:38,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1371 transitions, 19780 flow [2022-01-19 07:33:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:33:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:33:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2526 transitions. [2022-01-19 07:33:38,275 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6466973886328725 [2022-01-19 07:33:38,275 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2526 transitions. [2022-01-19 07:33:38,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2526 transitions. [2022-01-19 07:33:38,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:33:38,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2526 transitions. [2022-01-19 07:33:38,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 120.28571428571429) internal successors, (2526), 21 states have internal predecessors, (2526), 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 07:33:38,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 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 07:33:38,281 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 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 07:33:38,281 INFO L186 Difference]: Start difference. First operand has 405 places, 1030 transitions, 11853 flow. Second operand 21 states and 2526 transitions. [2022-01-19 07:33:38,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1371 transitions, 19780 flow [2022-01-19 07:33:46,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1371 transitions, 18906 flow, removed 361 selfloop flow, removed 12 redundant places. [2022-01-19 07:33:46,264 INFO L242 Difference]: Finished difference. Result has 422 places, 1249 transitions, 15951 flow [2022-01-19 07:33:46,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11262, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15951, PETRI_PLACES=422, PETRI_TRANSITIONS=1249} [2022-01-19 07:33:46,266 INFO L334 CegarLoopForPetriNet]: 175 programPoint places, 247 predicate places. [2022-01-19 07:33:46,266 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 1249 transitions, 15951 flow [2022-01-19 07:33:46,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 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 07:33:46,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:33:46,266 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, 1, 1, 1, 1, 1, 1, 1, 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 07:33:46,289 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 07:33:46,487 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 07:33:46,487 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 07:33:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:33:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -943930637, now seen corresponding path program 10 times [2022-01-19 07:33:46,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:33:46,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674119651] [2022-01-19 07:33:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:33:46,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:33:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:33:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:33:47,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:33:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674119651] [2022-01-19 07:33:47,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674119651] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:33:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900211946] [2022-01-19 07:33:47,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 07:33:47,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:33:47,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:33:47,227 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 07:33:47,228 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 07:33:47,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 07:33:47,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:33:47,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-19 07:33:47,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:33:47,822 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 07:33:48,573 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 07:33:48,664 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 07:33:48,777 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 07:33:49,103 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-19 07:33:49,104 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 20 [2022-01-19 07:33:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:33:49,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:33:53,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:53,291 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 190 treesize of output 130 [2022-01-19 07:33:53,310 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:53,311 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 5816 treesize of output 5452 [2022-01-19 07:33:53,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:53,391 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 6440 treesize of output 4738 [2022-01-19 07:33:53,472 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:53,472 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 3820 treesize of output 2982 [2022-01-19 07:33:53,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:33:53,553 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 3848 treesize of output 3442 [2022-01-19 07:33:53,621 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-01-19 07:46:27,160 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 07:46:27,162 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 07:46:27,162 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 07:46:27,163 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 07:46:27,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 07:46:27,362 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 07:46:27,362 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. [2022-01-19 07:46:27,364 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 07:46:27,364 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 07:46:27,364 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 07:46:27,367 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2022-01-19 07:46:27,368 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:46:27,368 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:46:27,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:46:27 BasicIcfg [2022-01-19 07:46:27,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:46:27,373 INFO L158 Benchmark]: Toolchain (without parser) took 833950.18ms. Allocated memory was 394.3MB in the beginning and 10.5GB in the end (delta: 10.1GB). Free memory was 340.7MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 8.4GB. Max. memory is 16.0GB. [2022-01-19 07:46:27,373 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 394.3MB. Free memory was 357.0MB in the beginning and 356.9MB in the end (delta: 83.2kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:46:27,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.33ms. Allocated memory is still 394.3MB. Free memory was 340.4MB in the beginning and 366.1MB in the end (delta: -25.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. [2022-01-19 07:46:27,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 394.3MB. Free memory was 366.1MB in the beginning and 363.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:46:27,373 INFO L158 Benchmark]: Boogie Preprocessor took 26.11ms. Allocated memory is still 394.3MB. Free memory was 363.8MB in the beginning and 362.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:46:27,374 INFO L158 Benchmark]: RCFGBuilder took 638.32ms. Allocated memory is still 394.3MB. Free memory was 362.0MB in the beginning and 339.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-19 07:46:27,374 INFO L158 Benchmark]: TraceAbstraction took 832900.42ms. Allocated memory was 394.3MB in the beginning and 10.5GB in the end (delta: 10.1GB). Free memory was 339.2MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 8.4GB. Max. memory is 16.0GB. [2022-01-19 07:46:27,375 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 394.3MB. Free memory was 357.0MB in the beginning and 356.9MB in the end (delta: 83.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 346.33ms. Allocated memory is still 394.3MB. Free memory was 340.4MB in the beginning and 366.1MB in the end (delta: -25.7MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 394.3MB. Free memory was 366.1MB in the beginning and 363.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.11ms. Allocated memory is still 394.3MB. Free memory was 363.8MB in the beginning and 362.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 638.32ms. Allocated memory is still 394.3MB. Free memory was 362.0MB in the beginning and 339.7MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 832900.42ms. Allocated memory was 394.3MB in the beginning and 10.5GB in the end (delta: 10.1GB). Free memory was 339.2MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 8.4GB. 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: 161]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 162 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 24ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 215 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 832.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 56.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3534 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3534 mSDsluCounter, 3254 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2743 IncrementalHoareTripleChecker+Unchecked, 6662 mSDsCounter, 406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7981 IncrementalHoareTripleChecker+Invalid, 11130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 406 mSolverCounterUnsat, 312 mSDtfsCounter, 7981 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1666 GetRequests, 1211 SyntacticMatches, 29 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 9607 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15951occurred in iteration=11, InterpolantAutomatonStates: 244, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 2723 NumberOfCodeBlocks, 2695 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3026 ConstructedInterpolants, 55 QuantifiedInterpolants, 19464 SizeOfPredicates, 120 NumberOfNonLiveVariables, 2246 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 7/17 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