/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-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 12:41:03,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 12:41:03,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 12:41:03,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 12:41:03,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 12:41:03,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 12:41:03,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 12:41:03,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 12:41:03,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 12:41:03,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 12:41:03,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 12:41:03,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 12:41:03,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 12:41:03,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 12:41:03,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 12:41:03,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 12:41:03,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 12:41:03,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 12:41:03,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 12:41:03,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 12:41:03,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 12:41:03,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 12:41:03,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 12:41:03,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 12:41:03,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 12:41:03,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 12:41:03,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 12:41:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 12:41:03,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 12:41:03,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 12:41:03,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 12:41:03,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 12:41:03,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 12:41:03,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 12:41:03,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 12:41:03,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 12:41:03,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 12:41:03,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 12:41:03,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 12:41:03,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 12:41:03,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 12:41:03,600 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 12:41:03,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 12:41:03,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 12:41:03,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 12:41:03,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 12:41:03,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 12:41:03,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 12:41:03,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 12:41:03,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 12:41:03,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:41:03,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 12:41:03,626 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 12:41:03,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 12:41:03,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 12:41:03,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 12:41:03,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 12:41:03,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 12:41:03,815 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 12:41:03,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2022-01-19 12:41:03,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5637a6497/009d028ae9bb4399a04488097e9fd6a5/FLAG12d2d9cb7 [2022-01-19 12:41:04,252 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 12:41:04,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2022-01-19 12:41:04,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5637a6497/009d028ae9bb4399a04488097e9fd6a5/FLAG12d2d9cb7 [2022-01-19 12:41:04,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5637a6497/009d028ae9bb4399a04488097e9fd6a5 [2022-01-19 12:41:04,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 12:41:04,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 12:41:04,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 12:41:04,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 12:41:04,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 12:41:04,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3eb0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04, skipping insertion in model container [2022-01-19 12:41:04,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 12:41:04,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 12:41:04,422 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-exp2x6.wvr.c[2453,2466] [2022-01-19 12:41:04,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:41:04,429 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 12:41:04,442 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-exp2x6.wvr.c[2453,2466] [2022-01-19 12:41:04,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:41:04,451 INFO L208 MainTranslator]: Completed translation [2022-01-19 12:41:04,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04 WrapperNode [2022-01-19 12:41:04,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 12:41:04,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 12:41:04,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 12:41:04,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 12:41:04,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,480 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-19 12:41:04,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 12:41:04,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 12:41:04,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 12:41:04,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 12:41:04,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 12:41:04,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 12:41:04,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 12:41:04,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 12:41:04,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (1/1) ... [2022-01-19 12:41:04,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:41:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:04,530 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 12:41:04,546 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 12:41:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 12:41:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 12:41:04,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 12:41:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 12:41:04,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 12:41:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 12:41:04,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 12:41:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 12:41:04,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 12:41:04,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 12:41:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 12:41:04,566 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 12:41:04,622 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 12:41:04,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 12:41:04,767 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 12:41:04,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 12:41:04,773 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 12:41:04,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:41:04 BoogieIcfgContainer [2022-01-19 12:41:04,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 12:41:04,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 12:41:04,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 12:41:04,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 12:41:04,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:41:04" (1/3) ... [2022-01-19 12:41:04,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6860d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:41:04, skipping insertion in model container [2022-01-19 12:41:04,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:04" (2/3) ... [2022-01-19 12:41:04,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6860d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:41:04, skipping insertion in model container [2022-01-19 12:41:04,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:41:04" (3/3) ... [2022-01-19 12:41:04,779 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2022-01-19 12:41:04,782 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 12:41:04,783 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 12:41:04,783 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 12:41:04,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,819 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,819 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,822 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,827 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,828 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,829 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,829 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:04,836 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 12:41:04,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 12:41:04,870 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 12:41:04,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 12:41:04,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 137 transitions, 306 flow [2022-01-19 12:41:04,918 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2022-01-19 12:41:04,918 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:41:04,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 10/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-01-19 12:41:04,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 137 transitions, 306 flow [2022-01-19 12:41:04,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 120 transitions, 264 flow [2022-01-19 12:41:04,945 INFO L129 PetriNetUnfolder]: 10/119 cut-off events. [2022-01-19 12:41:04,945 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:41:04,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:04,946 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 12:41:04,946 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 12:41:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 681650960, now seen corresponding path program 1 times [2022-01-19 12:41:04,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:04,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029766694] [2022-01-19 12:41:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:04,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:05,123 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 12:41:05,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:05,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029766694] [2022-01-19 12:41:05,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029766694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:05,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:05,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 12:41:05,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761683694] [2022-01-19 12:41:05,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:05,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 12:41:05,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 12:41:05,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 12:41:05,159 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 137 [2022-01-19 12:41:05,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 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 12:41:05,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:05,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 137 [2022-01-19 12:41:05,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:05,194 INFO L129 PetriNetUnfolder]: 4/114 cut-off events. [2022-01-19 12:41:05,194 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 12:41:05,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 114 events. 4/114 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 18/126 useless extension candidates. Maximal degree in co-relation 92. Up to 9 conditions per place. [2022-01-19 12:41:05,196 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 8 selfloop transitions, 0 changer transitions 2/114 dead transitions. [2022-01-19 12:41:05,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 114 transitions, 268 flow [2022-01-19 12:41:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 12:41:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 12:41:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2022-01-19 12:41:05,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2022-01-19 12:41:05,211 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2022-01-19 12:41:05,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2022-01-19 12:41:05,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:05,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2022-01-19 12:41:05,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 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 12:41:05,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 12:41:05,220 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 12:41:05,221 INFO L186 Difference]: Start difference. First operand has 123 places, 120 transitions, 264 flow. Second operand 2 states and 258 transitions. [2022-01-19 12:41:05,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 114 transitions, 268 flow [2022-01-19 12:41:05,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 252 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 12:41:05,226 INFO L242 Difference]: Finished difference. Result has 116 places, 112 transitions, 232 flow [2022-01-19 12:41:05,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=232, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2022-01-19 12:41:05,230 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, -7 predicate places. [2022-01-19 12:41:05,230 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 232 flow [2022-01-19 12:41:05,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 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 12:41:05,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:05,231 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 12:41:05,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 12:41:05,231 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 12:41:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -712841604, now seen corresponding path program 1 times [2022-01-19 12:41:05,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012881251] [2022-01-19 12:41:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:05,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:05,484 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 12:41:05,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:05,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012881251] [2022-01-19 12:41:05,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012881251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:05,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:05,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:41:05,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786978638] [2022-01-19 12:41:05,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:05,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:41:05,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:41:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:41:05,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 137 [2022-01-19 12:41:05,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 232 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 12:41:05,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:05,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 137 [2022-01-19 12:41:05,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:06,420 INFO L129 PetriNetUnfolder]: 5788/8844 cut-off events. [2022-01-19 12:41:06,420 INFO L130 PetriNetUnfolder]: For 299/351 co-relation queries the response was YES. [2022-01-19 12:41:06,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16925 conditions, 8844 events. 5788/8844 cut-off events. For 299/351 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 52550 event pairs, 3285 based on Foata normal form. 1/7225 useless extension candidates. Maximal degree in co-relation 16922. Up to 7342 conditions per place. [2022-01-19 12:41:06,475 INFO L132 encePairwiseOnDemand]: 127/137 looper letters, 59 selfloop transitions, 7 changer transitions 4/134 dead transitions. [2022-01-19 12:41:06,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 134 transitions, 423 flow [2022-01-19 12:41:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:41:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:41:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2022-01-19 12:41:06,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6579770594369134 [2022-01-19 12:41:06,481 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2022-01-19 12:41:06,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2022-01-19 12:41:06,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:06,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2022-01-19 12:41:06,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 0 states have call successors, (0), 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 12:41:06,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:06,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:06,489 INFO L186 Difference]: Start difference. First operand has 116 places, 112 transitions, 232 flow. Second operand 7 states and 631 transitions. [2022-01-19 12:41:06,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 134 transitions, 423 flow [2022-01-19 12:41:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 134 transitions, 423 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:41:06,494 INFO L242 Difference]: Finished difference. Result has 123 places, 116 transitions, 273 flow [2022-01-19 12:41:06,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=123, PETRI_TRANSITIONS=116} [2022-01-19 12:41:06,495 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2022-01-19 12:41:06,495 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 273 flow [2022-01-19 12:41:06,495 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 12:41:06,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:06,496 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] [2022-01-19 12:41:06,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 12:41:06,496 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 12:41:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash 577411595, now seen corresponding path program 1 times [2022-01-19 12:41:06,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:06,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443322039] [2022-01-19 12:41:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:06,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:06,655 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 12:41:06,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:06,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443322039] [2022-01-19 12:41:06,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443322039] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:41:06,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801319513] [2022-01-19 12:41:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:06,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:41:06,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:06,660 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 12:41:06,683 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 12:41:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:06,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:41:06,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:41:07,171 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 12:41:07,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:41:07,407 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 12:41:07,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801319513] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:41:07,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:41:07,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-19 12:41:07,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810794070] [2022-01-19 12:41:07,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:41:07,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 12:41:07,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 12:41:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-19 12:41:07,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 137 [2022-01-19 12:41:07,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 273 flow. Second operand has 10 states, 10 states have (on average 94.7) internal successors, (947), 10 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:07,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:07,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 137 [2022-01-19 12:41:07,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:08,109 INFO L129 PetriNetUnfolder]: 3382/6436 cut-off events. [2022-01-19 12:41:08,110 INFO L130 PetriNetUnfolder]: For 673/783 co-relation queries the response was YES. [2022-01-19 12:41:08,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12443 conditions, 6436 events. 3382/6436 cut-off events. For 673/783 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 49630 event pairs, 717 based on Foata normal form. 41/5036 useless extension candidates. Maximal degree in co-relation 12436. Up to 2263 conditions per place. [2022-01-19 12:41:08,193 INFO L132 encePairwiseOnDemand]: 124/137 looper letters, 103 selfloop transitions, 20 changer transitions 0/199 dead transitions. [2022-01-19 12:41:08,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 199 transitions, 737 flow [2022-01-19 12:41:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 12:41:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 12:41:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1205 transitions. [2022-01-19 12:41:08,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7329683698296837 [2022-01-19 12:41:08,196 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1205 transitions. [2022-01-19 12:41:08,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1205 transitions. [2022-01-19 12:41:08,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:08,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1205 transitions. [2022-01-19 12:41:08,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.41666666666667) internal successors, (1205), 12 states have internal predecessors, (1205), 0 states have call successors, (0), 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 12:41:08,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 137.0) internal successors, (1781), 13 states have internal predecessors, (1781), 0 states have call successors, (0), 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 12:41:08,201 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 137.0) internal successors, (1781), 13 states have internal predecessors, (1781), 0 states have call successors, (0), 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 12:41:08,201 INFO L186 Difference]: Start difference. First operand has 123 places, 116 transitions, 273 flow. Second operand 12 states and 1205 transitions. [2022-01-19 12:41:08,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 199 transitions, 737 flow [2022-01-19 12:41:08,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 199 transitions, 716 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-01-19 12:41:08,205 INFO L242 Difference]: Finished difference. Result has 134 places, 128 transitions, 390 flow [2022-01-19 12:41:08,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=390, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2022-01-19 12:41:08,206 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 11 predicate places. [2022-01-19 12:41:08,206 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 390 flow [2022-01-19 12:41:08,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.7) internal successors, (947), 10 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:08,207 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:08,207 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] [2022-01-19 12:41:08,226 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 12:41:08,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:41:08,426 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 12:41:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash -8459349, now seen corresponding path program 2 times [2022-01-19 12:41:08,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:08,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43698480] [2022-01-19 12:41:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:08,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:08,562 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 12:41:08,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:08,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43698480] [2022-01-19 12:41:08,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43698480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:08,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:08,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:08,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587927978] [2022-01-19 12:41:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:08,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:08,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:08,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:41:08,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:08,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:08,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:41:08,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:09,626 INFO L129 PetriNetUnfolder]: 9701/14002 cut-off events. [2022-01-19 12:41:09,627 INFO L130 PetriNetUnfolder]: For 14085/14168 co-relation queries the response was YES. [2022-01-19 12:41:09,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37368 conditions, 14002 events. 9701/14002 cut-off events. For 14085/14168 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 84281 event pairs, 3214 based on Foata normal form. 37/12742 useless extension candidates. Maximal degree in co-relation 37357. Up to 12875 conditions per place. [2022-01-19 12:41:09,730 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 82 selfloop transitions, 11 changer transitions 1/156 dead transitions. [2022-01-19 12:41:09,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 156 transitions, 686 flow [2022-01-19 12:41:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2022-01-19 12:41:09,732 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6690997566909975 [2022-01-19 12:41:09,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2022-01-19 12:41:09,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2022-01-19 12:41:09,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:09,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2022-01-19 12:41:09,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 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 12:41:09,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:09,735 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:09,735 INFO L186 Difference]: Start difference. First operand has 134 places, 128 transitions, 390 flow. Second operand 6 states and 550 transitions. [2022-01-19 12:41:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 156 transitions, 686 flow [2022-01-19 12:41:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 156 transitions, 680 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 12:41:09,758 INFO L242 Difference]: Finished difference. Result has 138 places, 132 transitions, 449 flow [2022-01-19 12:41:09,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2022-01-19 12:41:09,759 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 15 predicate places. [2022-01-19 12:41:09,759 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 449 flow [2022-01-19 12:41:09,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:09,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:09,759 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] [2022-01-19 12:41:09,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 12:41:09,759 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 12:41:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -64222800, now seen corresponding path program 1 times [2022-01-19 12:41:09,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:09,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789532831] [2022-01-19 12:41:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:09,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:09,909 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 12:41:09,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:09,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789532831] [2022-01-19 12:41:09,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789532831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:09,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:09,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:09,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676931752] [2022-01-19 12:41:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:09,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:09,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:09,912 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:41:09,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:09,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:09,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:41:09,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:11,005 INFO L129 PetriNetUnfolder]: 9680/15017 cut-off events. [2022-01-19 12:41:11,005 INFO L130 PetriNetUnfolder]: For 18936/19005 co-relation queries the response was YES. [2022-01-19 12:41:11,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39640 conditions, 15017 events. 9680/15017 cut-off events. For 18936/19005 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 103181 event pairs, 4003 based on Foata normal form. 0/13720 useless extension candidates. Maximal degree in co-relation 39626. Up to 12875 conditions per place. [2022-01-19 12:41:11,095 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 88 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-01-19 12:41:11,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 168 transitions, 869 flow [2022-01-19 12:41:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 552 transitions. [2022-01-19 12:41:11,097 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6715328467153284 [2022-01-19 12:41:11,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 552 transitions. [2022-01-19 12:41:11,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 552 transitions. [2022-01-19 12:41:11,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:11,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 552 transitions. [2022-01-19 12:41:11,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 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 12:41:11,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:11,099 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:11,099 INFO L186 Difference]: Start difference. First operand has 138 places, 132 transitions, 449 flow. Second operand 6 states and 552 transitions. [2022-01-19 12:41:11,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 168 transitions, 869 flow [2022-01-19 12:41:11,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 168 transitions, 823 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 12:41:11,112 INFO L242 Difference]: Finished difference. Result has 141 places, 140 transitions, 524 flow [2022-01-19 12:41:11,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2022-01-19 12:41:11,113 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 18 predicate places. [2022-01-19 12:41:11,113 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 524 flow [2022-01-19 12:41:11,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:11,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:11,113 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] [2022-01-19 12:41:11,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 12:41:11,114 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 12:41:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1319488414, now seen corresponding path program 2 times [2022-01-19 12:41:11,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:11,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029984934] [2022-01-19 12:41:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:11,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:11,246 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 12:41:11,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029984934] [2022-01-19 12:41:11,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029984934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:11,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:11,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:11,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784860324] [2022-01-19 12:41:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:11,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:11,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:11,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:11,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:41:11,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:11,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:11,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:41:11,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:12,339 INFO L129 PetriNetUnfolder]: 9627/14931 cut-off events. [2022-01-19 12:41:12,339 INFO L130 PetriNetUnfolder]: For 20442/20521 co-relation queries the response was YES. [2022-01-19 12:41:12,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41539 conditions, 14931 events. 9627/14931 cut-off events. For 20442/20521 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 99744 event pairs, 5941 based on Foata normal form. 20/14615 useless extension candidates. Maximal degree in co-relation 41523. Up to 12846 conditions per place. [2022-01-19 12:41:12,423 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 89 selfloop transitions, 15 changer transitions 2/168 dead transitions. [2022-01-19 12:41:12,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 168 transitions, 890 flow [2022-01-19 12:41:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2022-01-19 12:41:12,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6690997566909975 [2022-01-19 12:41:12,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2022-01-19 12:41:12,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2022-01-19 12:41:12,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:12,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2022-01-19 12:41:12,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 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 12:41:12,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:12,427 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 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 12:41:12,428 INFO L186 Difference]: Start difference. First operand has 141 places, 140 transitions, 524 flow. Second operand 6 states and 550 transitions. [2022-01-19 12:41:12,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 168 transitions, 890 flow [2022-01-19 12:41:12,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 168 transitions, 875 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 12:41:12,440 INFO L242 Difference]: Finished difference. Result has 145 places, 140 transitions, 562 flow [2022-01-19 12:41:12,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=562, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2022-01-19 12:41:12,440 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 22 predicate places. [2022-01-19 12:41:12,441 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 562 flow [2022-01-19 12:41:12,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 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 12:41:12,441 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:12,441 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] [2022-01-19 12:41:12,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 12:41:12,441 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 12:41:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1243219261, now seen corresponding path program 1 times [2022-01-19 12:41:12,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:12,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715327983] [2022-01-19 12:41:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:12,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:12,592 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 12:41:12,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:12,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715327983] [2022-01-19 12:41:12,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715327983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:41:12,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816112537] [2022-01-19 12:41:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:12,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:41:12,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:12,595 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 12:41:12,691 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 12:41:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:12,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:41:12,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:41:13,100 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 12:41:13,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:41:13,339 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 12:41:13,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816112537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:41:13,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:41:13,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 12:41:13,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766694128] [2022-01-19 12:41:13,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:41:13,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 12:41:13,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 12:41:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 12:41:13,341 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:41:13,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 562 flow. Second operand has 14 states, 14 states have (on average 82.71428571428571) internal successors, (1158), 14 states have internal predecessors, (1158), 0 states have call successors, (0), 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 12:41:13,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:13,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:41:13,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:15,527 INFO L129 PetriNetUnfolder]: 15101/24323 cut-off events. [2022-01-19 12:41:15,528 INFO L130 PetriNetUnfolder]: For 35551/35592 co-relation queries the response was YES. [2022-01-19 12:41:15,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69278 conditions, 24323 events. 15101/24323 cut-off events. For 35551/35592 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 182953 event pairs, 2152 based on Foata normal form. 603/24680 useless extension candidates. Maximal degree in co-relation 69260. Up to 10026 conditions per place. [2022-01-19 12:41:15,675 INFO L132 encePairwiseOnDemand]: 122/137 looper letters, 253 selfloop transitions, 30 changer transitions 2/347 dead transitions. [2022-01-19 12:41:15,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 347 transitions, 2192 flow [2022-01-19 12:41:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 12:41:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 12:41:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1303 transitions. [2022-01-19 12:41:15,678 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6793534932221064 [2022-01-19 12:41:15,678 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1303 transitions. [2022-01-19 12:41:15,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1303 transitions. [2022-01-19 12:41:15,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:15,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1303 transitions. [2022-01-19 12:41:15,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.07142857142857) internal successors, (1303), 14 states have internal predecessors, (1303), 0 states have call successors, (0), 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 12:41:15,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 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 12:41:15,683 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 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 12:41:15,683 INFO L186 Difference]: Start difference. First operand has 145 places, 140 transitions, 562 flow. Second operand 14 states and 1303 transitions. [2022-01-19 12:41:15,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 347 transitions, 2192 flow [2022-01-19 12:41:15,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 347 transitions, 2153 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 12:41:15,716 INFO L242 Difference]: Finished difference. Result has 162 places, 152 transitions, 712 flow [2022-01-19 12:41:15,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=712, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-01-19 12:41:15,717 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 39 predicate places. [2022-01-19 12:41:15,717 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 712 flow [2022-01-19 12:41:15,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.71428571428571) internal successors, (1158), 14 states have internal predecessors, (1158), 0 states have call successors, (0), 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 12:41:15,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:15,717 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] [2022-01-19 12:41:15,733 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 12:41:15,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 12:41:15,931 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 12:41:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 462475452, now seen corresponding path program 3 times [2022-01-19 12:41:15,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:15,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690716828] [2022-01-19 12:41:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:15,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:16,114 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 12:41:16,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690716828] [2022-01-19 12:41:16,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690716828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:16,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:16,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:41:16,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556697965] [2022-01-19 12:41:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:16,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:41:16,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:41:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:41:16,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:41:16,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 712 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 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 12:41:16,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:16,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:41:16,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:18,155 INFO L129 PetriNetUnfolder]: 16638/25929 cut-off events. [2022-01-19 12:41:18,155 INFO L130 PetriNetUnfolder]: For 59419/59479 co-relation queries the response was YES. [2022-01-19 12:41:18,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85714 conditions, 25929 events. 16638/25929 cut-off events. For 59419/59479 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 188660 event pairs, 6905 based on Foata normal form. 480/26168 useless extension candidates. Maximal degree in co-relation 85690. Up to 16663 conditions per place. [2022-01-19 12:41:18,389 INFO L132 encePairwiseOnDemand]: 127/137 looper letters, 132 selfloop transitions, 19 changer transitions 2/215 dead transitions. [2022-01-19 12:41:18,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 215 transitions, 1389 flow [2022-01-19 12:41:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:41:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:41:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2022-01-19 12:41:18,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6767466110531803 [2022-01-19 12:41:18,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 649 transitions. [2022-01-19 12:41:18,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 649 transitions. [2022-01-19 12:41:18,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:18,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 649 transitions. [2022-01-19 12:41:18,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.71428571428571) internal successors, (649), 7 states have internal predecessors, (649), 0 states have call successors, (0), 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 12:41:18,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:18,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:18,394 INFO L186 Difference]: Start difference. First operand has 162 places, 152 transitions, 712 flow. Second operand 7 states and 649 transitions. [2022-01-19 12:41:18,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 215 transitions, 1389 flow [2022-01-19 12:41:18,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 215 transitions, 1358 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 12:41:18,508 INFO L242 Difference]: Finished difference. Result has 165 places, 153 transitions, 750 flow [2022-01-19 12:41:18,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=750, PETRI_PLACES=165, PETRI_TRANSITIONS=153} [2022-01-19 12:41:18,509 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 42 predicate places. [2022-01-19 12:41:18,509 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 153 transitions, 750 flow [2022-01-19 12:41:18,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 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 12:41:18,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:18,510 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] [2022-01-19 12:41:18,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 12:41:18,510 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 12:41:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 490795772, now seen corresponding path program 1 times [2022-01-19 12:41:18,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:18,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068061040] [2022-01-19 12:41:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:18,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:18,570 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 12:41:18,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068061040] [2022-01-19 12:41:18,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068061040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:18,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:18,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:18,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650746216] [2022-01-19 12:41:18,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:18,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:18,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:18,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 137 [2022-01-19 12:41:18,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 153 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 0 states have call successors, (0), 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 12:41:18,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:18,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 137 [2022-01-19 12:41:18,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:19,920 INFO L129 PetriNetUnfolder]: 8363/15959 cut-off events. [2022-01-19 12:41:19,921 INFO L130 PetriNetUnfolder]: For 50271/51003 co-relation queries the response was YES. [2022-01-19 12:41:19,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55578 conditions, 15959 events. 8363/15959 cut-off events. For 50271/51003 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 140944 event pairs, 3114 based on Foata normal form. 249/15626 useless extension candidates. Maximal degree in co-relation 55552. Up to 6793 conditions per place. [2022-01-19 12:41:20,060 INFO L132 encePairwiseOnDemand]: 126/137 looper letters, 121 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2022-01-19 12:41:20,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 1467 flow [2022-01-19 12:41:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:41:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:41:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 723 transitions. [2022-01-19 12:41:20,062 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7539103232533889 [2022-01-19 12:41:20,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 723 transitions. [2022-01-19 12:41:20,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 723 transitions. [2022-01-19 12:41:20,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:20,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 723 transitions. [2022-01-19 12:41:20,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 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 12:41:20,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:20,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 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 12:41:20,065 INFO L186 Difference]: Start difference. First operand has 165 places, 153 transitions, 750 flow. Second operand 7 states and 723 transitions. [2022-01-19 12:41:20,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 1467 flow [2022-01-19 12:41:20,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 1444 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:41:20,253 INFO L242 Difference]: Finished difference. Result has 170 places, 156 transitions, 828 flow [2022-01-19 12:41:20,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=170, PETRI_TRANSITIONS=156} [2022-01-19 12:41:20,254 INFO L334 CegarLoopForPetriNet]: 123 programPoint places, 47 predicate places. [2022-01-19 12:41:20,254 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 156 transitions, 828 flow [2022-01-19 12:41:20,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 0 states have call successors, (0), 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 12:41:20,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:20,255 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:20,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 12:41:20,255 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 12:41:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1971918019, now seen corresponding path program 1 times [2022-01-19 12:41:20,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835251579] [2022-01-19 12:41:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:20,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:21,063 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 12:41:21,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835251579] [2022-01-19 12:41:21,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835251579] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:41:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146832037] [2022-01-19 12:41:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:21,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:41:21,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:21,065 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 12:41:21,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Received shutdown request... [2022-01-19 12:55:47,874 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 12:55:47,875 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 12:55:48,881 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 12:55:49,075 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2022-01-19 12:55:49,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2022-01-19 12:55:49,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 12:55:49,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-19 12:55:49,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-01-19 12:55:49,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469844100] [2022-01-19 12:55:49,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-19 12:55:49,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 12:55:49,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:55:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 12:55:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-01-19 12:55:49,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 137 [2022-01-19 12:55:49,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 156 transitions, 828 flow. Second operand has 18 states, 18 states have (on average 80.22222222222223) internal successors, (1444), 18 states have internal predecessors, (1444), 0 states have call successors, (0), 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 12:55:49,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:55:49,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 137 [2022-01-19 12:55:49,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:55:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 12:55:49,086 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 12:55:49,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 12:55:49,086 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). [2022-01-19 12:55:49,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 12:55:49,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 12:55:49,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 12:55:49,090 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 12:55:49,092 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2022-01-19 12:55:49,093 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 12:55:49,093 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 12:55:49,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:55:49 BasicIcfg [2022-01-19 12:55:49,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 12:55:49,095 INFO L158 Benchmark]: Toolchain (without parser) took 884828.05ms. Allocated memory was 381.7MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 329.3MB in the beginning and 6.7GB in the end (delta: -6.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-19 12:55:49,095 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 381.7MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 12:55:49,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.79ms. Allocated memory is still 381.7MB. Free memory was 328.9MB in the beginning and 353.3MB in the end (delta: -24.3MB). Peak memory consumption was 19.5MB. Max. memory is 16.0GB. [2022-01-19 12:55:49,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.00ms. Allocated memory is still 381.7MB. Free memory was 353.3MB in the beginning and 352.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 12:55:49,096 INFO L158 Benchmark]: Boogie Preprocessor took 20.80ms. Allocated memory is still 381.7MB. Free memory was 352.2MB in the beginning and 350.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 12:55:49,096 INFO L158 Benchmark]: RCFGBuilder took 271.79ms. Allocated memory is still 381.7MB. Free memory was 350.1MB in the beginning and 335.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 12:55:49,096 INFO L158 Benchmark]: TraceAbstraction took 884319.58ms. Allocated memory was 381.7MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 334.4MB in the beginning and 6.7GB in the end (delta: -6.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-19 12:55:49,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 381.7MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 178.79ms. Allocated memory is still 381.7MB. Free memory was 328.9MB in the beginning and 353.3MB in the end (delta: -24.3MB). Peak memory consumption was 19.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.00ms. Allocated memory is still 381.7MB. Free memory was 353.3MB in the beginning and 352.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.80ms. Allocated memory is still 381.7MB. Free memory was 352.2MB in the beginning and 350.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 271.79ms. Allocated memory is still 381.7MB. Free memory was 350.1MB in the beginning and 335.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 884319.58ms. Allocated memory was 381.7MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 334.4MB in the beginning and 6.7GB in the end (delta: -6.3GB). Peak memory consumption was 1.2GB. 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: 104]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/137 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 30 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 164 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: 884.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 808 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 808 mSDsluCounter, 479 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 578 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1684 IncrementalHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 226 mSDtfsCounter, 1684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 479 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=828occurred in iteration=9, InterpolantAutomatonStates: 67, 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, 3.0s InterpolantComputationTime, 1159 NumberOfCodeBlocks, 1159 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1339 ConstructedInterpolants, 0 QuantifiedInterpolants, 18619 SizeOfPredicates, 20 NumberOfNonLiveVariables, 514 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 5/13 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