/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 12:40:20,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 12:40:20,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 12:40:20,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 12:40:20,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 12:40:20,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 12:40:20,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 12:40:20,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 12:40:20,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 12:40:20,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 12:40:20,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 12:40:20,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 12:40:20,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 12:40:20,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 12:40:20,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 12:40:20,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 12:40:20,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 12:40:20,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 12:40:20,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 12:40:20,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 12:40:20,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 12:40:20,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 12:40:20,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 12:40:20,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 12:40:20,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 12:40:20,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 12:40:20,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 12:40:20,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 12:40:20,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 12:40:20,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 12:40:20,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 12:40:20,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 12:40:20,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 12:40:20,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 12:40:20,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 12:40:20,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 12:40:20,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 12:40:20,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 12:40:20,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 12:40:20,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 12:40:20,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 12:40:20,857 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-After.epf [2022-01-19 12:40:20,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 12:40:20,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 12:40:20,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 12:40:20,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 12:40:20,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 12:40:20,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 12:40:20,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 12:40:20,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 12:40:20,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 12:40:20,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 12:40:20,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:40:20,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 12:40:20,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 12:40:20,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 12:40:20,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 12:40:20,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 12:40:20,882 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 12:40:20,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 12:40:21,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 12:40:21,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 12:40:21,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 12:40:21,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 12:40:21,100 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 12:40:21,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-01-19 12:40:21,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7195c132/33622845924c4532927e8fcebd1eba0a/FLAGbd4cb8bb0 [2022-01-19 12:40:21,533 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 12:40:21,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-01-19 12:40:21,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7195c132/33622845924c4532927e8fcebd1eba0a/FLAGbd4cb8bb0 [2022-01-19 12:40:21,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7195c132/33622845924c4532927e8fcebd1eba0a [2022-01-19 12:40:21,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 12:40:21,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 12:40:21,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 12:40:21,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 12:40:21,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 12:40:21,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390a2086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21, skipping insertion in model container [2022-01-19 12:40:21,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 12:40:21,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 12:40:21,698 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/bench-exp2x4.wvr.c[2309,2322] [2022-01-19 12:40:21,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:40:21,705 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 12:40:21,718 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/bench-exp2x4.wvr.c[2309,2322] [2022-01-19 12:40:21,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:40:21,726 INFO L208 MainTranslator]: Completed translation [2022-01-19 12:40:21,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21 WrapperNode [2022-01-19 12:40:21,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 12:40:21,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 12:40:21,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 12:40:21,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 12:40:21,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,748 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-19 12:40:21,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 12:40:21,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 12:40:21,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 12:40:21,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 12:40:21,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 12:40:21,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 12:40:21,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 12:40:21,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 12:40:21,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (1/1) ... [2022-01-19 12:40:21,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:40:21,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:40:21,784 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 12:40:21,798 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 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 12:40:21,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 12:40:21,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 12:40:21,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 12:40:21,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 12:40:21,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 12:40:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 12:40:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 12:40:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 12:40:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 12:40:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 12:40:21,820 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 12:40:21,872 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 12:40:21,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 12:40:22,052 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 12:40:22,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 12:40:22,058 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 12:40:22,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:40:22 BoogieIcfgContainer [2022-01-19 12:40:22,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 12:40:22,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 12:40:22,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 12:40:22,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 12:40:22,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:40:21" (1/3) ... [2022-01-19 12:40:22,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:40:22, skipping insertion in model container [2022-01-19 12:40:22,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:40:21" (2/3) ... [2022-01-19 12:40:22,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3413c05f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:40:22, skipping insertion in model container [2022-01-19 12:40:22,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:40:22" (3/3) ... [2022-01-19 12:40:22,065 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2022-01-19 12:40:22,082 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 12:40:22,083 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 12:40:22,083 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 12:40:22,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,147 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,149 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,149 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,149 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,149 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,154 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,154 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,161 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,162 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:40:22,174 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 12:40:22,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 12:40:22,209 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 12:40:22,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 12:40:22,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 129 transitions, 290 flow [2022-01-19 12:40:22,274 INFO L129 PetriNetUnfolder]: 10/125 cut-off events. [2022-01-19 12:40:22,275 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:40:22,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-01-19 12:40:22,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 129 transitions, 290 flow [2022-01-19 12:40:22,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2022-01-19 12:40:22,300 INFO L129 PetriNetUnfolder]: 10/111 cut-off events. [2022-01-19 12:40:22,301 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:40:22,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:22,302 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] [2022-01-19 12:40:22,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1320447835, now seen corresponding path program 1 times [2022-01-19 12:40:22,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:22,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019871487] [2022-01-19 12:40:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:22,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:22,516 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 12:40:22,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:22,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019871487] [2022-01-19 12:40:22,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019871487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:22,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:22,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 12:40:22,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317113599] [2022-01-19 12:40:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:22,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 12:40:22,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 12:40:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 12:40:22,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 129 [2022-01-19 12:40:22,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 12:40:22,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:22,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 129 [2022-01-19 12:40:22,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:22,621 INFO L129 PetriNetUnfolder]: 4/106 cut-off events. [2022-01-19 12:40:22,621 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 12:40:22,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 106 events. 4/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 18/118 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2022-01-19 12:40:22,623 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 8 selfloop transitions, 0 changer transitions 2/106 dead transitions. [2022-01-19 12:40:22,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 252 flow [2022-01-19 12:40:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 12:40:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 12:40:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2022-01-19 12:40:22,634 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.937984496124031 [2022-01-19 12:40:22,634 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2022-01-19 12:40:22,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2022-01-19 12:40:22,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:22,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2022-01-19 12:40:22,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 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 12:40:22,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 12:40:22,657 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 12:40:22,658 INFO L186 Difference]: Start difference. First operand has 115 places, 112 transitions, 248 flow. Second operand 2 states and 242 transitions. [2022-01-19 12:40:22,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 252 flow [2022-01-19 12:40:22,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 12:40:22,664 INFO L242 Difference]: Finished difference. Result has 108 places, 104 transitions, 216 flow [2022-01-19 12:40:22,665 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-01-19 12:40:22,672 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, -7 predicate places. [2022-01-19 12:40:22,673 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 216 flow [2022-01-19 12:40:22,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 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 12:40:22,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:22,674 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] [2022-01-19 12:40:22,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 12:40:22,674 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1027447866, now seen corresponding path program 1 times [2022-01-19 12:40:22,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:22,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967180478] [2022-01-19 12:40:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:22,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:23,057 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 12:40:23,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:23,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967180478] [2022-01-19 12:40:23,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967180478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:23,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:23,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:40:23,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991707103] [2022-01-19 12:40:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:23,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:40:23,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:23,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:40:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:40:23,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 129 [2022-01-19 12:40:23,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 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 12:40:23,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:23,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 129 [2022-01-19 12:40:23,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:23,475 INFO L129 PetriNetUnfolder]: 1672/2858 cut-off events. [2022-01-19 12:40:23,475 INFO L130 PetriNetUnfolder]: For 125/177 co-relation queries the response was YES. [2022-01-19 12:40:23,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 2858 events. 1672/2858 cut-off events. For 125/177 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15534 event pairs, 727 based on Foata normal form. 1/2129 useless extension candidates. Maximal degree in co-relation 5258. Up to 1838 conditions per place. [2022-01-19 12:40:23,501 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 51 selfloop transitions, 7 changer transitions 4/126 dead transitions. [2022-01-19 12:40:23,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 391 flow [2022-01-19 12:40:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:40:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:40:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2022-01-19 12:40:23,506 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2022-01-19 12:40:23,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2022-01-19 12:40:23,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2022-01-19 12:40:23,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:23,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2022-01-19 12:40:23,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 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 12:40:23,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:23,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:23,536 INFO L186 Difference]: Start difference. First operand has 108 places, 104 transitions, 216 flow. Second operand 7 states and 623 transitions. [2022-01-19 12:40:23,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 391 flow [2022-01-19 12:40:23,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:40:23,539 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 257 flow [2022-01-19 12:40:23,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-01-19 12:40:23,542 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 0 predicate places. [2022-01-19 12:40:23,542 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 257 flow [2022-01-19 12:40:23,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 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 12:40:23,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:23,543 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] [2022-01-19 12:40:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 12:40:23,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:23,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2095688119, now seen corresponding path program 1 times [2022-01-19 12:40:23,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:23,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506306142] [2022-01-19 12:40:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:23,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:23,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:23,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506306142] [2022-01-19 12:40:23,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506306142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:23,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:23,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:40:23,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036646863] [2022-01-19 12:40:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:23,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:40:23,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:40:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:40:23,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:23,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:23,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:23,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:23,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:24,204 INFO L129 PetriNetUnfolder]: 1645/2775 cut-off events. [2022-01-19 12:40:24,205 INFO L130 PetriNetUnfolder]: For 410/472 co-relation queries the response was YES. [2022-01-19 12:40:24,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 2775 events. 1645/2775 cut-off events. For 410/472 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 15426 event pairs, 251 based on Foata normal form. 0/2123 useless extension candidates. Maximal degree in co-relation 5875. Up to 1840 conditions per place. [2022-01-19 12:40:24,224 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 60 selfloop transitions, 13 changer transitions 1/136 dead transitions. [2022-01-19 12:40:24,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 136 transitions, 483 flow [2022-01-19 12:40:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:40:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:40:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-01-19 12:40:24,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7028423772609819 [2022-01-19 12:40:24,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-01-19 12:40:24,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-01-19 12:40:24,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:24,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-01-19 12:40:24,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 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 12:40:24,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:24,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:24,230 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 257 flow. Second operand 6 states and 544 transitions. [2022-01-19 12:40:24,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 136 transitions, 483 flow [2022-01-19 12:40:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 466 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 12:40:24,237 INFO L242 Difference]: Finished difference. Result has 115 places, 114 transitions, 311 flow [2022-01-19 12:40:24,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2022-01-19 12:40:24,238 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 0 predicate places. [2022-01-19 12:40:24,239 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 311 flow [2022-01-19 12:40:24,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:24,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:24,239 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] [2022-01-19 12:40:24,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 12:40:24,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1439782455, now seen corresponding path program 2 times [2022-01-19 12:40:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320627719] [2022-01-19 12:40:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:24,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:24,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:24,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320627719] [2022-01-19 12:40:24,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320627719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:24,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:24,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:40:24,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488595323] [2022-01-19 12:40:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:40:24,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:40:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:40:24,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:24,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:24,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:24,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:24,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:24,788 INFO L129 PetriNetUnfolder]: 1568/2655 cut-off events. [2022-01-19 12:40:24,789 INFO L130 PetriNetUnfolder]: For 969/1016 co-relation queries the response was YES. [2022-01-19 12:40:24,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6238 conditions, 2655 events. 1568/2655 cut-off events. For 969/1016 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 14367 event pairs, 348 based on Foata normal form. 26/2273 useless extension candidates. Maximal degree in co-relation 6231. Up to 1799 conditions per place. [2022-01-19 12:40:24,808 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 61 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2022-01-19 12:40:24,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 533 flow [2022-01-19 12:40:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:40:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:40:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-01-19 12:40:24,809 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7002583979328165 [2022-01-19 12:40:24,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-01-19 12:40:24,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-01-19 12:40:24,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:24,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-01-19 12:40:24,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 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 12:40:24,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:24,812 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:24,812 INFO L186 Difference]: Start difference. First operand has 115 places, 114 transitions, 311 flow. Second operand 6 states and 542 transitions. [2022-01-19 12:40:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 533 flow [2022-01-19 12:40:24,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 511 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:40:24,817 INFO L242 Difference]: Finished difference. Result has 118 places, 116 transitions, 344 flow [2022-01-19 12:40:24,817 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2022-01-19 12:40:24,818 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 3 predicate places. [2022-01-19 12:40:24,818 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 344 flow [2022-01-19 12:40:24,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:24,818 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:24,819 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] [2022-01-19 12:40:24,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 12:40:24,819 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash -289692152, now seen corresponding path program 1 times [2022-01-19 12:40:24,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:24,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817342305] [2022-01-19 12:40:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:24,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:25,017 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 12:40:25,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817342305] [2022-01-19 12:40:25,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817342305] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:40:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993718750] [2022-01-19 12:40:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:25,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:40:25,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:40:25,020 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 12:40:25,021 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 12:40:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:25,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:40:25,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:40:25,542 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 12:40:25,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:40:25,790 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 12:40:25,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993718750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:40:25,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:40:25,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 12:40:25,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76790982] [2022-01-19 12:40:25,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:40:25,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 12:40:25,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:25,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 12:40:25,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 12:40:25,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:25,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 344 flow. Second operand has 14 states, 14 states have (on average 82.64285714285714) internal successors, (1157), 14 states have internal predecessors, (1157), 0 states have call successors, (0), 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 12:40:25,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:25,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:25,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:26,649 INFO L129 PetriNetUnfolder]: 2935/5102 cut-off events. [2022-01-19 12:40:26,649 INFO L130 PetriNetUnfolder]: For 2538/2572 co-relation queries the response was YES. [2022-01-19 12:40:26,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 5102 events. 2935/5102 cut-off events. For 2538/2572 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32037 event pairs, 402 based on Foata normal form. 127/4540 useless extension candidates. Maximal degree in co-relation 12354. Up to 1211 conditions per place. [2022-01-19 12:40:26,691 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 145 selfloop transitions, 28 changer transitions 2/237 dead transitions. [2022-01-19 12:40:26,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 237 transitions, 1062 flow [2022-01-19 12:40:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 12:40:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 12:40:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1267 transitions. [2022-01-19 12:40:26,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2022-01-19 12:40:26,694 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1267 transitions. [2022-01-19 12:40:26,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1267 transitions. [2022-01-19 12:40:26,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:26,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1267 transitions. [2022-01-19 12:40:26,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.5) internal successors, (1267), 14 states have internal predecessors, (1267), 0 states have call successors, (0), 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 12:40:26,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 0 states have call successors, (0), 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 12:40:26,700 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 0 states have call successors, (0), 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 12:40:26,700 INFO L186 Difference]: Start difference. First operand has 118 places, 116 transitions, 344 flow. Second operand 14 states and 1267 transitions. [2022-01-19 12:40:26,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 237 transitions, 1062 flow [2022-01-19 12:40:26,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 237 transitions, 1025 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 12:40:26,709 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 486 flow [2022-01-19 12:40:26,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=486, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-01-19 12:40:26,710 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 20 predicate places. [2022-01-19 12:40:26,710 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 486 flow [2022-01-19 12:40:26,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.64285714285714) internal successors, (1157), 14 states have internal predecessors, (1157), 0 states have call successors, (0), 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 12:40:26,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:26,711 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] [2022-01-19 12:40:26,735 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 12:40:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:40:26,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1112995835, now seen corresponding path program 3 times [2022-01-19 12:40:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:26,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974348328] [2022-01-19 12:40:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:26,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:27,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:27,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974348328] [2022-01-19 12:40:27,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974348328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:27,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:27,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:40:27,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457122309] [2022-01-19 12:40:27,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:27,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:40:27,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:40:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:40:27,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:27,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 486 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 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 12:40:27,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:27,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:27,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:27,548 INFO L129 PetriNetUnfolder]: 3245/5392 cut-off events. [2022-01-19 12:40:27,549 INFO L130 PetriNetUnfolder]: For 7270/7305 co-relation queries the response was YES. [2022-01-19 12:40:27,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15794 conditions, 5392 events. 3245/5392 cut-off events. For 7270/7305 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32477 event pairs, 835 based on Foata normal form. 84/4718 useless extension candidates. Maximal degree in co-relation 15779. Up to 2724 conditions per place. [2022-01-19 12:40:27,597 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 88 selfloop transitions, 17 changer transitions 2/169 dead transitions. [2022-01-19 12:40:27,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 169 transitions, 867 flow [2022-01-19 12:40:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:40:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:40:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-01-19 12:40:27,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7032115171650055 [2022-01-19 12:40:27,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-01-19 12:40:27,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-01-19 12:40:27,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:27,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-01-19 12:40:27,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 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 12:40:27,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:27,601 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:27,601 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 486 flow. Second operand 7 states and 635 transitions. [2022-01-19 12:40:27,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 169 transitions, 867 flow [2022-01-19 12:40:27,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 840 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-01-19 12:40:27,626 INFO L242 Difference]: Finished difference. Result has 138 places, 129 transitions, 522 flow [2022-01-19 12:40:27,626 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=138, PETRI_TRANSITIONS=129} [2022-01-19 12:40:27,627 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 23 predicate places. [2022-01-19 12:40:27,627 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 129 transitions, 522 flow [2022-01-19 12:40:27,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 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 12:40:27,627 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:27,628 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] [2022-01-19 12:40:27,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 12:40:27,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1950645235, now seen corresponding path program 1 times [2022-01-19 12:40:27,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:27,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806895102] [2022-01-19 12:40:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:27,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:27,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:27,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806895102] [2022-01-19 12:40:27,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806895102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:27,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:27,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:40:27,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412136414] [2022-01-19 12:40:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:27,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:40:27,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:40:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:40:27,736 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:27,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 129 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:27,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:27,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:27,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:28,166 INFO L129 PetriNetUnfolder]: 3216/5334 cut-off events. [2022-01-19 12:40:28,166 INFO L130 PetriNetUnfolder]: For 10161/10223 co-relation queries the response was YES. [2022-01-19 12:40:28,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16884 conditions, 5334 events. 3216/5334 cut-off events. For 10161/10223 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32411 event pairs, 1031 based on Foata normal form. 2/4612 useless extension candidates. Maximal degree in co-relation 16867. Up to 4108 conditions per place. [2022-01-19 12:40:28,210 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 80 selfloop transitions, 21 changer transitions 2/165 dead transitions. [2022-01-19 12:40:28,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 165 transitions, 978 flow [2022-01-19 12:40:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:40:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:40:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-01-19 12:40:28,212 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7028423772609819 [2022-01-19 12:40:28,212 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-01-19 12:40:28,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-01-19 12:40:28,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:28,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-01-19 12:40:28,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 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 12:40:28,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:28,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:28,215 INFO L186 Difference]: Start difference. First operand has 138 places, 129 transitions, 522 flow. Second operand 6 states and 544 transitions. [2022-01-19 12:40:28,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 165 transitions, 978 flow [2022-01-19 12:40:28,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 165 transitions, 949 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:40:28,242 INFO L242 Difference]: Finished difference. Result has 141 places, 139 transitions, 668 flow [2022-01-19 12:40:28,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2022-01-19 12:40:28,243 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 26 predicate places. [2022-01-19 12:40:28,243 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 668 flow [2022-01-19 12:40:28,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:28,243 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:28,243 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] [2022-01-19 12:40:28,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 12:40:28,244 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 875749367, now seen corresponding path program 2 times [2022-01-19 12:40:28,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:28,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104228226] [2022-01-19 12:40:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:28,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:28,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104228226] [2022-01-19 12:40:28,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104228226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:28,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:28,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:40:28,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647334711] [2022-01-19 12:40:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:28,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:40:28,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:40:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:40:28,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:28,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:28,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:28,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:28,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:28,779 INFO L129 PetriNetUnfolder]: 3137/5160 cut-off events. [2022-01-19 12:40:28,779 INFO L130 PetriNetUnfolder]: For 10173/10194 co-relation queries the response was YES. [2022-01-19 12:40:28,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17462 conditions, 5160 events. 3137/5160 cut-off events. For 10173/10194 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31236 event pairs, 783 based on Foata normal form. 22/5026 useless extension candidates. Maximal degree in co-relation 17442. Up to 4065 conditions per place. [2022-01-19 12:40:28,818 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 82 selfloop transitions, 17 changer transitions 2/163 dead transitions. [2022-01-19 12:40:28,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 976 flow [2022-01-19 12:40:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:40:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:40:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-01-19 12:40:28,819 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7002583979328165 [2022-01-19 12:40:28,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-01-19 12:40:28,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-01-19 12:40:28,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:28,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-01-19 12:40:28,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 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 12:40:28,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:28,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 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 12:40:28,822 INFO L186 Difference]: Start difference. First operand has 141 places, 139 transitions, 668 flow. Second operand 6 states and 542 transitions. [2022-01-19 12:40:28,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 976 flow [2022-01-19 12:40:28,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 163 transitions, 959 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 12:40:28,850 INFO L242 Difference]: Finished difference. Result has 145 places, 137 transitions, 662 flow [2022-01-19 12:40:28,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-01-19 12:40:28,850 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 30 predicate places. [2022-01-19 12:40:28,850 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 662 flow [2022-01-19 12:40:28,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 12:40:28,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:28,851 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] [2022-01-19 12:40:28,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 12:40:28,851 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1833408498, now seen corresponding path program 1 times [2022-01-19 12:40:28,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:28,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112555207] [2022-01-19 12:40:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:28,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:28,978 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 12:40:28,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:28,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112555207] [2022-01-19 12:40:28,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112555207] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:40:28,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459435093] [2022-01-19 12:40:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:28,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:40:28,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:40:28,980 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 12:40:28,981 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 12:40:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:29,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:40:29,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:40:29,322 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 12:40:29,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:40:29,546 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 12:40:29,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459435093] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:40:29,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:40:29,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 12:40:29,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630973365] [2022-01-19 12:40:29,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:40:29,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 12:40:29,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:29,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 12:40:29,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 12:40:29,549 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:29,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 662 flow. Second operand has 14 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 0 states have call successors, (0), 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 12:40:29,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:29,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:29,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:30,935 INFO L129 PetriNetUnfolder]: 6276/10416 cut-off events. [2022-01-19 12:40:30,936 INFO L130 PetriNetUnfolder]: For 26456/26511 co-relation queries the response was YES. [2022-01-19 12:40:30,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36261 conditions, 10416 events. 6276/10416 cut-off events. For 26456/26511 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 72818 event pairs, 1406 based on Foata normal form. 314/10464 useless extension candidates. Maximal degree in co-relation 36239. Up to 3503 conditions per place. [2022-01-19 12:40:31,016 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 224 selfloop transitions, 32 changer transitions 2/320 dead transitions. [2022-01-19 12:40:31,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 320 transitions, 2354 flow [2022-01-19 12:40:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 12:40:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 12:40:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1267 transitions. [2022-01-19 12:40:31,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2022-01-19 12:40:31,019 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1267 transitions. [2022-01-19 12:40:31,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1267 transitions. [2022-01-19 12:40:31,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:31,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1267 transitions. [2022-01-19 12:40:31,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.5) internal successors, (1267), 14 states have internal predecessors, (1267), 0 states have call successors, (0), 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 12:40:31,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 0 states have call successors, (0), 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 12:40:31,024 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 0 states have call successors, (0), 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 12:40:31,024 INFO L186 Difference]: Start difference. First operand has 145 places, 137 transitions, 662 flow. Second operand 14 states and 1267 transitions. [2022-01-19 12:40:31,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 320 transitions, 2354 flow [2022-01-19 12:40:31,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 320 transitions, 2313 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 12:40:31,070 INFO L242 Difference]: Finished difference. Result has 162 places, 149 transitions, 816 flow [2022-01-19 12:40:31,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=816, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-01-19 12:40:31,071 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 47 predicate places. [2022-01-19 12:40:31,071 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 816 flow [2022-01-19 12:40:31,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 0 states have call successors, (0), 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 12:40:31,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:31,072 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] [2022-01-19 12:40:31,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 12:40:31,288 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,SelfDestructingSolverStorable8 [2022-01-19 12:40:31,288 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:31,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash 381671547, now seen corresponding path program 3 times [2022-01-19 12:40:31,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301112017] [2022-01-19 12:40:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:31,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:31,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:31,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301112017] [2022-01-19 12:40:31,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301112017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:40:31,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:40:31,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:40:31,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247129589] [2022-01-19 12:40:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:40:31,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:40:31,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:40:31,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:40:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:40:31,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 12:40:31,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 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 12:40:31,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:40:31,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 12:40:31,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:40:32,541 INFO L129 PetriNetUnfolder]: 6954/11287 cut-off events. [2022-01-19 12:40:32,541 INFO L130 PetriNetUnfolder]: For 41762/41780 co-relation queries the response was YES. [2022-01-19 12:40:32,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45133 conditions, 11287 events. 6954/11287 cut-off events. For 41762/41780 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 77533 event pairs, 2720 based on Foata normal form. 204/11218 useless extension candidates. Maximal degree in co-relation 45105. Up to 6746 conditions per place. [2022-01-19 12:40:32,656 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 120 selfloop transitions, 21 changer transitions 2/205 dead transitions. [2022-01-19 12:40:32,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 205 transitions, 1491 flow [2022-01-19 12:40:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:40:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:40:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-01-19 12:40:32,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7032115171650055 [2022-01-19 12:40:32,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-01-19 12:40:32,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-01-19 12:40:32,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:40:32,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-01-19 12:40:32,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 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 12:40:32,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:32,661 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 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 12:40:32,662 INFO L186 Difference]: Start difference. First operand has 162 places, 149 transitions, 816 flow. Second operand 7 states and 635 transitions. [2022-01-19 12:40:32,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 205 transitions, 1491 flow [2022-01-19 12:40:32,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 205 transitions, 1458 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 12:40:32,734 INFO L242 Difference]: Finished difference. Result has 165 places, 150 transitions, 858 flow [2022-01-19 12:40:32,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=858, PETRI_PLACES=165, PETRI_TRANSITIONS=150} [2022-01-19 12:40:32,736 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 50 predicate places. [2022-01-19 12:40:32,736 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 150 transitions, 858 flow [2022-01-19 12:40:32,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 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 12:40:32,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:40:32,737 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] [2022-01-19 12:40:32,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 12:40:32,737 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:40:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:40:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1676109041, now seen corresponding path program 1 times [2022-01-19 12:40:32,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:40:32,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923014664] [2022-01-19 12:40:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:32,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:40:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:40:33,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:40:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923014664] [2022-01-19 12:40:33,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923014664] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:40:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946331371] [2022-01-19 12:40:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:40:33,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:40:33,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:40:33,918 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 12:40:33,918 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 12:40:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:40:52,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-19 12:40:52,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:42:22,894 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:23,198 INFO L884 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:23,370 INFO L884 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:23,686 INFO L884 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:24,139 INFO L884 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:24,655 INFO L884 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:25,381 INFO L884 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:26,268 INFO L884 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:27,399 INFO L884 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:28,830 INFO L884 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:30,599 INFO L884 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:32,612 INFO L884 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:34,978 INFO L884 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:37,768 INFO L884 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:40,974 INFO L884 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:44,650 INFO L884 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:48,803 INFO L884 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:53,527 INFO L884 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:42:58,745 INFO L884 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:04,581 INFO L884 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:11,099 INFO L884 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:18,236 INFO L884 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:26,085 INFO L884 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:34,663 INFO L884 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:43,995 INFO L884 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:43:54,100 INFO L884 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:44:05,056 INFO L884 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:44:16,855 INFO L884 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:44:29,537 INFO L884 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:44:43,073 INFO L884 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:44:57,581 INFO L884 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:45:13,032 INFO L884 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:45:29,498 INFO L884 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:45:47,043 INFO L884 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:05,642 INFO L884 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:25,355 INFO L884 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:46,181 INFO L884 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:08,235 INFO L884 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:31,413 INFO L884 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:56,003 INFO L884 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:21,893 INFO L884 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:49,202 INFO L884 QuantifierPusher]: Run 420 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:49:17,917 INFO L884 QuantifierPusher]: Run 430 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:49:47,872 INFO L884 QuantifierPusher]: Run 440 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:50:19,045 INFO L884 QuantifierPusher]: Run 450 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:50:51,770 INFO L884 QuantifierPusher]: Run 460 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:51:26,243 INFO L884 QuantifierPusher]: Run 470 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:52:02,138 INFO L884 QuantifierPusher]: Run 480 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:52:39,374 INFO L884 QuantifierPusher]: Run 490 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:53:17,941 INFO L884 QuantifierPusher]: Run 500 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:53:58,238 INFO L884 QuantifierPusher]: Run 510 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:54:40,025 INFO L884 QuantifierPusher]: Run 520 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-01-19 12:54:59,552 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 12:54:59,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 12:55:00,564 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 12:55:00,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-01-19 12:55:01,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 12:55:01,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 12:55:01,074 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2022-01-19 12:55:01,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 12:55:01,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 12:55:01,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 12:55:01,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 12:55:01,078 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2022-01-19 12:55:01,079 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 12:55:01,079 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 12:55:01,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:55:01 BasicIcfg [2022-01-19 12:55:01,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 12:55:01,089 INFO L158 Benchmark]: Toolchain (without parser) took 879539.06ms. Allocated memory was 398.5MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 345.1MB in the beginning and 487.6MB in the end (delta: -142.6MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-19 12:55:01,089 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 361.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 12:55:01,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.60ms. Allocated memory is still 398.5MB. Free memory was 344.9MB in the beginning and 370.1MB in the end (delta: -25.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. [2022-01-19 12:55:01,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.12ms. Allocated memory is still 398.5MB. Free memory was 370.1MB in the beginning and 368.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 12:55:01,089 INFO L158 Benchmark]: Boogie Preprocessor took 14.74ms. Allocated memory is still 398.5MB. Free memory was 368.6MB in the beginning and 367.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 12:55:01,089 INFO L158 Benchmark]: RCFGBuilder took 295.36ms. Allocated memory is still 398.5MB. Free memory was 367.4MB in the beginning and 353.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 12:55:01,090 INFO L158 Benchmark]: TraceAbstraction took 879028.16ms. Allocated memory was 398.5MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 353.3MB in the beginning and 487.6MB in the end (delta: -134.3MB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-19 12:55:01,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 361.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 171.60ms. Allocated memory is still 398.5MB. Free memory was 344.9MB in the beginning and 370.1MB in the end (delta: -25.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.12ms. Allocated memory is still 398.5MB. Free memory was 370.1MB in the beginning and 368.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.74ms. Allocated memory is still 398.5MB. Free memory was 368.6MB in the beginning and 367.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 295.36ms. Allocated memory is still 398.5MB. Free memory was 367.4MB in the beginning and 353.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 879028.16ms. Allocated memory was 398.5MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 353.3MB in the beginning and 487.6MB in the end (delta: -134.3MB). Peak memory consumption was 1.3GB. 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: 96]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 89]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 87]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 88]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 86]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 878.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 920 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 920 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1972 IncrementalHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 192 mSDtfsCounter, 1972 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=858occurred in iteration=10, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1134 NumberOfCodeBlocks, 1134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1310 ConstructedInterpolants, 0 QuantifiedInterpolants, 16646 SizeOfPredicates, 20 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 6/12 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