./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdc5a1717dfd5e838e2925a531ca4d85547079ab ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/stack_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdc5a1717dfd5e838e2925a531ca4d85547079ab ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: 0 --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:44:46,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:44:46,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:44:46,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:44:46,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:44:46,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:44:46,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:44:46,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:44:46,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:44:46,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:44:46,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:44:46,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:44:46,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:44:46,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:44:46,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:44:46,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:44:46,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:44:46,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:44:46,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:44:46,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:44:46,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:44:46,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:44:46,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:44:46,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:44:46,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:44:46,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:44:46,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:44:46,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:44:46,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:44:46,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:44:46,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:44:46,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:44:46,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:44:46,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:44:46,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:44:46,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:44:46,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:44:46,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:44:46,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:44:46,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:44:46,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:44:46,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 02:44:46,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:44:46,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:44:46,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:44:46,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:44:46,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:44:46,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:44:46,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:44:46,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 02:44:46,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:44:46,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:44:46,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:44:46,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:44:46,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:44:46,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:44:46,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:44:46,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:44:46,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:44:46,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:44:46,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:44:46,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:44:46,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:44:46,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:44:46,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:44:46,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:44:46,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:44:46,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 02:44:46,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 02:44:46,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:44:46,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:44:46,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdc5a1717dfd5e838e2925a531ca4d85547079ab [2020-10-20 02:44:46,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:44:46,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:44:46,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:44:46,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:44:46,773 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:44:46,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2020-10-20 02:44:46,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7708f8b20/842b89665f484e02aa71328b47a9afbb/FLAG3fab1fcf0 [2020-10-20 02:44:47,503 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:44:47,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2020-10-20 02:44:47,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7708f8b20/842b89665f484e02aa71328b47a9afbb/FLAG3fab1fcf0 [2020-10-20 02:44:47,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7708f8b20/842b89665f484e02aa71328b47a9afbb [2020-10-20 02:44:47,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:44:47,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:44:47,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:44:47,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:44:47,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:44:47,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:44:47" (1/1) ... [2020-10-20 02:44:47,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9c5af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:47, skipping insertion in model container [2020-10-20 02:44:47,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:44:47" (1/1) ... [2020-10-20 02:44:47,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:44:47,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:44:48,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:44:48,396 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:44:48,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:44:48,636 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:44:48,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48 WrapperNode [2020-10-20 02:44:48,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:44:48,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:44:48,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:44:48,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:44:48,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:44:48,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:44:48,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:44:48,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:44:48,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... [2020-10-20 02:44:48,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:44:48,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:44:48,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:44:48,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:44:48,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:44:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-20 02:44:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-20 02:44:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-20 02:44:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-20 02:44:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 02:44:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:44:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:44:48,895 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:44:49,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:44:49,431 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-10-20 02:44:49,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:44:49 BoogieIcfgContainer [2020-10-20 02:44:49,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:44:49,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:44:49,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:44:49,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:44:49,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:44:47" (1/3) ... [2020-10-20 02:44:49,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9bc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:44:49, skipping insertion in model container [2020-10-20 02:44:49,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:44:48" (2/3) ... [2020-10-20 02:44:49,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b9bc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:44:49, skipping insertion in model container [2020-10-20 02:44:49,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:44:49" (3/3) ... [2020-10-20 02:44:49,443 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2020-10-20 02:44:49,456 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:44:49,457 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:44:49,465 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:44:49,467 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:44:49,513 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,514 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,514 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,514 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,515 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,515 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,515 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,516 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,516 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,516 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,516 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,517 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,517 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,517 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,517 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,518 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,518 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,518 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,518 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,519 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,519 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,519 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,520 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,520 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,520 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,520 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,521 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,521 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,521 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,522 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,522 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,523 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,523 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,523 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,523 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,524 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,524 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,525 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,525 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,525 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,526 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,527 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,528 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,528 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,528 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,528 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,529 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,530 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,530 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,531 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,531 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,532 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,533 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,534 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,535 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,535 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,535 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,536 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,536 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,536 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,537 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,537 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,537 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,537 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,538 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,538 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,538 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,539 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,539 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,540 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,540 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,540 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,540 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,541 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,541 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,541 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,542 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,542 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,542 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,543 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,544 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,545 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,546 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,547 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,548 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,549 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,549 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,549 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,550 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,551 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,551 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,551 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,555 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,556 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,556 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,556 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,557 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,557 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,558 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,559 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,559 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,560 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,560 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,560 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,561 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,561 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,561 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,568 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,569 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,569 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,569 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,570 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,572 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,572 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,573 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,573 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:44:49,584 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-20 02:44:49,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 02:44:49,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:44:49,624 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:44:49,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:44:49,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:44:49,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:44:49,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:44:49,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:44:49,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:44:49,642 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:44:49,646 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 152 transitions, 326 flow [2020-10-20 02:44:49,649 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 152 transitions, 326 flow [2020-10-20 02:44:49,651 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 145 places, 152 transitions, 326 flow [2020-10-20 02:44:49,736 INFO L129 PetriNetUnfolder]: 13/152 cut-off events. [2020-10-20 02:44:49,736 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-20 02:44:49,745 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 152 events. 13/152 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 397 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 116. Up to 3 conditions per place. [2020-10-20 02:44:49,755 INFO L117 LiptonReduction]: Number of co-enabled transitions 6874 [2020-10-20 02:44:51,686 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-20 02:44:53,108 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-20 02:44:53,226 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-20 02:44:54,118 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2020-10-20 02:44:54,576 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-20 02:44:54,617 INFO L132 LiptonReduction]: Checked pairs total: 12128 [2020-10-20 02:44:54,618 INFO L134 LiptonReduction]: Total number of compositions: 149 [2020-10-20 02:44:54,625 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-10-20 02:44:54,650 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-10-20 02:44:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-20 02:44:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 02:44:54,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:54,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 02:44:54,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1786919100, now seen corresponding path program 1 times [2020-10-20 02:44:54,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:54,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016355215] [2020-10-20 02:44:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:54,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016355215] [2020-10-20 02:44:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:54,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:44:54,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842496298] [2020-10-20 02:44:54,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:44:54,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:54,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:44:54,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:54,990 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-10-20 02:44:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:55,089 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-10-20 02:44:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:44:55,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 02:44:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:55,122 INFO L225 Difference]: With dead ends: 504 [2020-10-20 02:44:55,122 INFO L226 Difference]: Without dead ends: 460 [2020-10-20 02:44:55,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-20 02:44:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-10-20 02:44:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-20 02:44:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-10-20 02:44:55,252 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-10-20 02:44:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:55,253 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-10-20 02:44:55,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:44:55,253 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-10-20 02:44:55,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:44:55,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:55,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:55,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 02:44:55,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1640121652, now seen corresponding path program 1 times [2020-10-20 02:44:55,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:55,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144821386] [2020-10-20 02:44:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:55,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144821386] [2020-10-20 02:44:55,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:55,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 02:44:55,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339353378] [2020-10-20 02:44:55,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:44:55,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:44:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:55,337 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-10-20 02:44:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:55,357 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-10-20 02:44:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:44:55,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 02:44:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:55,361 INFO L225 Difference]: With dead ends: 464 [2020-10-20 02:44:55,361 INFO L226 Difference]: Without dead ends: 464 [2020-10-20 02:44:55,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-20 02:44:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-20 02:44:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-20 02:44:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-10-20 02:44:55,379 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-10-20 02:44:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:55,379 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-10-20 02:44:55,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:44:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-10-20 02:44:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:44:55,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:55,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:55,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 02:44:55,382 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1317417300, now seen corresponding path program 1 times [2020-10-20 02:44:55,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:55,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130003867] [2020-10-20 02:44:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:55,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130003867] [2020-10-20 02:44:55,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992455904] [2020-10-20 02:44:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:55,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 02:44:55,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:44:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:55,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:44:55,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-20 02:44:55,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564362606] [2020-10-20 02:44:55,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 02:44:55,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 02:44:55,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 02:44:55,617 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-10-20 02:44:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:55,733 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-10-20 02:44:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:44:55,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 02:44:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:55,740 INFO L225 Difference]: With dead ends: 866 [2020-10-20 02:44:55,740 INFO L226 Difference]: Without dead ends: 851 [2020-10-20 02:44:55,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:44:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-20 02:44:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-10-20 02:44:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-20 02:44:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-10-20 02:44:55,762 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-10-20 02:44:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:55,762 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-10-20 02:44:55,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 02:44:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-10-20 02:44:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 02:44:55,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:55,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:55,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 02:44:55,980 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 150162657, now seen corresponding path program 1 times [2020-10-20 02:44:55,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:55,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350141101] [2020-10-20 02:44:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:56,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350141101] [2020-10-20 02:44:56,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:56,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:44:56,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367640870] [2020-10-20 02:44:56,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:44:56,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:56,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:44:56,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:56,052 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-10-20 02:44:56,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:56,074 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-10-20 02:44:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:44:56,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-20 02:44:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:56,077 INFO L225 Difference]: With dead ends: 304 [2020-10-20 02:44:56,077 INFO L226 Difference]: Without dead ends: 304 [2020-10-20 02:44:56,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-20 02:44:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-10-20 02:44:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-20 02:44:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-10-20 02:44:56,086 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-10-20 02:44:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:56,088 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-10-20 02:44:56,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:44:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-10-20 02:44:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 02:44:56,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:56,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:56,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 02:44:56,090 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:56,091 INFO L82 PathProgramCache]: Analyzing trace with hash 129653450, now seen corresponding path program 1 times [2020-10-20 02:44:56,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:56,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860121261] [2020-10-20 02:44:56,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:56,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860121261] [2020-10-20 02:44:56,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:56,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 02:44:56,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791076108] [2020-10-20 02:44:56,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:44:56,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:44:56,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:56,134 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-10-20 02:44:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:56,189 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-10-20 02:44:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:44:56,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 02:44:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:56,192 INFO L225 Difference]: With dead ends: 372 [2020-10-20 02:44:56,192 INFO L226 Difference]: Without dead ends: 372 [2020-10-20 02:44:56,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:44:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-20 02:44:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-10-20 02:44:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-20 02:44:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-10-20 02:44:56,201 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-10-20 02:44:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:56,202 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-10-20 02:44:56,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:44:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-10-20 02:44:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 02:44:56,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:56,203 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 02:44:56,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 02:44:56,204 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1112399292, now seen corresponding path program 2 times [2020-10-20 02:44:56,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:56,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405923046] [2020-10-20 02:44:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:56,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405923046] [2020-10-20 02:44:56,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601435906] [2020-10-20 02:44:56,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:56,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:44:56,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:44:56,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 02:44:56,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:44:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:56,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:44:56,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 02:44:56,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459361825] [2020-10-20 02:44:56,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 02:44:56,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:56,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 02:44:56,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 02:44:56,432 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 9 states. [2020-10-20 02:44:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:56,571 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-10-20 02:44:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 02:44:56,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 02:44:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:56,575 INFO L225 Difference]: With dead ends: 542 [2020-10-20 02:44:56,576 INFO L226 Difference]: Without dead ends: 542 [2020-10-20 02:44:56,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-20 02:44:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-20 02:44:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-10-20 02:44:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-20 02:44:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-10-20 02:44:56,587 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-10-20 02:44:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:56,588 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-10-20 02:44:56,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 02:44:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-10-20 02:44:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:44:56,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:56,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:56,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:56,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2122602692, now seen corresponding path program 1 times [2020-10-20 02:44:56,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:56,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381545626] [2020-10-20 02:44:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:57,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381545626] [2020-10-20 02:44:57,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:57,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 02:44:57,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137558562] [2020-10-20 02:44:57,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:44:57,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:44:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:44:57,149 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 8 states. [2020-10-20 02:44:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:57,444 INFO L93 Difference]: Finished difference Result 664 states and 1430 transitions. [2020-10-20 02:44:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:44:57,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 02:44:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:57,449 INFO L225 Difference]: With dead ends: 664 [2020-10-20 02:44:57,449 INFO L226 Difference]: Without dead ends: 603 [2020-10-20 02:44:57,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-20 02:44:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-20 02:44:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 428. [2020-10-20 02:44:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-20 02:44:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 948 transitions. [2020-10-20 02:44:57,469 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 948 transitions. Word has length 21 [2020-10-20 02:44:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 948 transitions. [2020-10-20 02:44:57,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:44:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 948 transitions. [2020-10-20 02:44:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:44:57,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:57,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:57,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 02:44:57,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash -216122834, now seen corresponding path program 2 times [2020-10-20 02:44:57,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:57,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329198053] [2020-10-20 02:44:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:57,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329198053] [2020-10-20 02:44:57,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:57,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 02:44:57,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225083471] [2020-10-20 02:44:57,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:44:57,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:44:57,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:44:57,800 INFO L87 Difference]: Start difference. First operand 428 states and 948 transitions. Second operand 8 states. [2020-10-20 02:44:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:58,059 INFO L93 Difference]: Finished difference Result 691 states and 1490 transitions. [2020-10-20 02:44:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:44:58,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 02:44:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:58,063 INFO L225 Difference]: With dead ends: 691 [2020-10-20 02:44:58,064 INFO L226 Difference]: Without dead ends: 629 [2020-10-20 02:44:58,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:44:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-10-20 02:44:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 416. [2020-10-20 02:44:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-20 02:44:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 916 transitions. [2020-10-20 02:44:58,083 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 916 transitions. Word has length 21 [2020-10-20 02:44:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:58,084 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 916 transitions. [2020-10-20 02:44:58,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:44:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 916 transitions. [2020-10-20 02:44:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 02:44:58,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:58,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:58,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 02:44:58,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:58,087 INFO L82 PathProgramCache]: Analyzing trace with hash -345042698, now seen corresponding path program 1 times [2020-10-20 02:44:58,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:58,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838835421] [2020-10-20 02:44:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:58,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838835421] [2020-10-20 02:44:58,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729392268] [2020-10-20 02:44:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:58,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 02:44:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:44:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:44:58,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 02:44:58,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-10-20 02:44:58,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558336458] [2020-10-20 02:44:58,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 02:44:58,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:58,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 02:44:58,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:44:58,299 INFO L87 Difference]: Start difference. First operand 416 states and 916 transitions. Second operand 6 states. [2020-10-20 02:44:58,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:58,397 INFO L93 Difference]: Finished difference Result 576 states and 1231 transitions. [2020-10-20 02:44:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 02:44:58,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-20 02:44:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:58,419 INFO L225 Difference]: With dead ends: 576 [2020-10-20 02:44:58,420 INFO L226 Difference]: Without dead ends: 566 [2020-10-20 02:44:58,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-20 02:44:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-20 02:44:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 476. [2020-10-20 02:44:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-20 02:44:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1042 transitions. [2020-10-20 02:44:58,435 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1042 transitions. Word has length 24 [2020-10-20 02:44:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:58,436 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 1042 transitions. [2020-10-20 02:44:58,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 02:44:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1042 transitions. [2020-10-20 02:44:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 02:44:58,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:58,438 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-20 02:44:58,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:58,653 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1313270868, now seen corresponding path program 3 times [2020-10-20 02:44:58,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:58,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125126426] [2020-10-20 02:44:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:58,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125126426] [2020-10-20 02:44:58,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364001884] [2020-10-20 02:44:58,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:58,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 02:44:58,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:44:58,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:44:58,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:44:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:44:58,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:44:58,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-20 02:44:58,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479512202] [2020-10-20 02:44:58,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 02:44:58,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 02:44:58,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-20 02:44:58,881 INFO L87 Difference]: Start difference. First operand 476 states and 1042 transitions. Second operand 11 states. [2020-10-20 02:44:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:44:59,015 INFO L93 Difference]: Finished difference Result 789 states and 1669 transitions. [2020-10-20 02:44:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 02:44:59,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-20 02:44:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:44:59,020 INFO L225 Difference]: With dead ends: 789 [2020-10-20 02:44:59,020 INFO L226 Difference]: Without dead ends: 789 [2020-10-20 02:44:59,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-20 02:44:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-20 02:44:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 553. [2020-10-20 02:44:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-20 02:44:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1211 transitions. [2020-10-20 02:44:59,036 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1211 transitions. Word has length 27 [2020-10-20 02:44:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:44:59,037 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1211 transitions. [2020-10-20 02:44:59,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 02:44:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1211 transitions. [2020-10-20 02:44:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 02:44:59,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:44:59,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:44:59,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:44:59,254 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:44:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:44:59,254 INFO L82 PathProgramCache]: Analyzing trace with hash 683248086, now seen corresponding path program 3 times [2020-10-20 02:44:59,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:44:59,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420591254] [2020-10-20 02:44:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:44:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:44:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:44:59,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420591254] [2020-10-20 02:44:59,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:44:59,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 02:44:59,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517776887] [2020-10-20 02:44:59,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 02:44:59,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:44:59,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 02:44:59,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:44:59,512 INFO L87 Difference]: Start difference. First operand 553 states and 1211 transitions. Second operand 13 states. [2020-10-20 02:45:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:00,950 INFO L93 Difference]: Finished difference Result 1158 states and 2471 transitions. [2020-10-20 02:45:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 02:45:00,950 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-20 02:45:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:00,956 INFO L225 Difference]: With dead ends: 1158 [2020-10-20 02:45:00,956 INFO L226 Difference]: Without dead ends: 1103 [2020-10-20 02:45:00,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2020-10-20 02:45:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-10-20 02:45:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 543. [2020-10-20 02:45:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-20 02:45:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1192 transitions. [2020-10-20 02:45:00,978 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1192 transitions. Word has length 28 [2020-10-20 02:45:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:00,980 INFO L481 AbstractCegarLoop]: Abstraction has 543 states and 1192 transitions. [2020-10-20 02:45:00,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 02:45:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1192 transitions. [2020-10-20 02:45:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 02:45:00,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:00,983 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:00,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 02:45:00,983 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash 795373220, now seen corresponding path program 2 times [2020-10-20 02:45:00,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:00,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009024403] [2020-10-20 02:45:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:45:01,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009024403] [2020-10-20 02:45:01,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540081409] [2020-10-20 02:45:01,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:01,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:01,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:01,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:45:01,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:45:01,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:01,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-20 02:45:01,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890962637] [2020-10-20 02:45:01,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 02:45:01,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:01,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 02:45:01,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-20 02:45:01,221 INFO L87 Difference]: Start difference. First operand 543 states and 1192 transitions. Second operand 10 states. [2020-10-20 02:45:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:01,350 INFO L93 Difference]: Finished difference Result 859 states and 1820 transitions. [2020-10-20 02:45:01,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 02:45:01,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-20 02:45:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:01,356 INFO L225 Difference]: With dead ends: 859 [2020-10-20 02:45:01,357 INFO L226 Difference]: Without dead ends: 859 [2020-10-20 02:45:01,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-20 02:45:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-10-20 02:45:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 587. [2020-10-20 02:45:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-20 02:45:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 1316 transitions. [2020-10-20 02:45:01,380 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 1316 transitions. Word has length 31 [2020-10-20 02:45:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:01,380 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 1316 transitions. [2020-10-20 02:45:01,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 02:45:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 1316 transitions. [2020-10-20 02:45:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 02:45:01,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:01,383 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-20 02:45:01,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 02:45:01,597 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2041265476, now seen corresponding path program 4 times [2020-10-20 02:45:01,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:01,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773005177] [2020-10-20 02:45:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:01,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773005177] [2020-10-20 02:45:01,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502112591] [2020-10-20 02:45:01,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:01,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 02:45:01,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:01,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 02:45:01,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:01,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:01,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-20 02:45:01,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688411960] [2020-10-20 02:45:01,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 02:45:01,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 02:45:01,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:01,918 INFO L87 Difference]: Start difference. First operand 587 states and 1316 transitions. Second operand 13 states. [2020-10-20 02:45:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:02,082 INFO L93 Difference]: Finished difference Result 931 states and 2006 transitions. [2020-10-20 02:45:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 02:45:02,083 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-20 02:45:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:02,090 INFO L225 Difference]: With dead ends: 931 [2020-10-20 02:45:02,090 INFO L226 Difference]: Without dead ends: 931 [2020-10-20 02:45:02,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-20 02:45:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-10-20 02:45:02,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 664. [2020-10-20 02:45:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-20 02:45:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1485 transitions. [2020-10-20 02:45:02,124 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1485 transitions. Word has length 34 [2020-10-20 02:45:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:02,125 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1485 transitions. [2020-10-20 02:45:02,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 02:45:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1485 transitions. [2020-10-20 02:45:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 02:45:02,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:02,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:02,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:02,341 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash 695939425, now seen corresponding path program 1 times [2020-10-20 02:45:02,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 02:45:02,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540801820] [2020-10-20 02:45:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 02:45:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:02,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540801820] [2020-10-20 02:45:02,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049905377] [2020-10-20 02:45:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 02:45:02,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:02,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2527 treesize of output 2399 [2020-10-20 02:45:03,005 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:03,198 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2020-10-20 02:45:03,200 INFO L625 ElimStorePlain]: treesize reduction 2168, result has 2.2 percent of original size [2020-10-20 02:45:03,210 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: need array sort [2020-10-20 02:45:03,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 02:45:03,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-20 02:45:03,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425450151] [2020-10-20 02:45:03,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 02:45:03,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 02:45:03,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 02:45:03,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-20 02:45:03,212 INFO L87 Difference]: Start difference. First operand 664 states and 1485 transitions. Second operand 18 states. [2020-10-20 02:45:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 02:45:03,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 02:45:03,423 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@478a9a20 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 02:45:03,427 INFO L168 Benchmark]: Toolchain (without parser) took 15729.91 ms. Allocated memory was 36.2 MB in the beginning and 111.7 MB in the end (delta: 75.5 MB). Free memory was 9.7 MB in the beginning and 67.7 MB in the end (delta: -58.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,428 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 34.1 MB. Free memory was 15.6 MB in the beginning and 15.5 MB in the end (delta: 67.2 kB). Peak memory consumption was 33.6 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 935.31 ms. Allocated memory was 36.2 MB in the beginning and 49.3 MB in the end (delta: 13.1 MB). Free memory was 8.7 MB in the beginning and 15.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.99 ms. Allocated memory is still 49.3 MB. Free memory was 15.5 MB in the beginning and 12.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,430 INFO L168 Benchmark]: Boogie Preprocessor took 51.94 ms. Allocated memory was 49.3 MB in the beginning and 48.8 MB in the end (delta: -524.3 kB). Free memory was 12.6 MB in the beginning and 29.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 396.7 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,431 INFO L168 Benchmark]: RCFGBuilder took 636.49 ms. Allocated memory was 48.8 MB in the beginning and 51.4 MB in the end (delta: 2.6 MB). Free memory was 29.5 MB in the beginning and 14.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,431 INFO L168 Benchmark]: TraceAbstraction took 13990.87 ms. Allocated memory was 51.4 MB in the beginning and 111.7 MB in the end (delta: 60.3 MB). Free memory was 13.7 MB in the beginning and 67.7 MB in the end (delta: -54.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:03,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 34.1 MB. Free memory was 15.6 MB in the beginning and 15.5 MB in the end (delta: 67.2 kB). Peak memory consumption was 33.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 935.31 ms. Allocated memory was 36.2 MB in the beginning and 49.3 MB in the end (delta: 13.1 MB). Free memory was 8.7 MB in the beginning and 15.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 103.99 ms. Allocated memory is still 49.3 MB. Free memory was 15.5 MB in the beginning and 12.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 51.94 ms. Allocated memory was 49.3 MB in the beginning and 48.8 MB in the end (delta: -524.3 kB). Free memory was 12.6 MB in the beginning and 29.5 MB in the end (delta: -16.9 MB). Peak memory consumption was 396.7 kB. Max. memory is 14.3 GB. * RCFGBuilder took 636.49 ms. Allocated memory was 48.8 MB in the beginning and 51.4 MB in the end (delta: 2.6 MB). Free memory was 29.5 MB in the beginning and 14.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 13990.87 ms. Allocated memory was 51.4 MB in the beginning and 111.7 MB in the end (delta: 60.3 MB). Free memory was 13.7 MB in the beginning and 67.7 MB in the end (delta: -54.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4969 VarBasedMoverChecksPositive, 89 VarBasedMoverChecksNegative, 26 SemBasedMoverChecksPositive, 63 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 338 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 145 PlacesBefore, 40 PlacesAfterwards, 152 TransitionsBefore, 40 TransitionsAfterwards, 6874 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 87 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 12128 MoverChecksTotal - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@478a9a20 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@478a9a20: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 02:45:05,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 02:45:05,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 02:45:05,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 02:45:05,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 02:45:05,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 02:45:05,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 02:45:05,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 02:45:05,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 02:45:05,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 02:45:05,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 02:45:05,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 02:45:05,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 02:45:05,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 02:45:05,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 02:45:05,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 02:45:05,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 02:45:05,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 02:45:05,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 02:45:05,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 02:45:05,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 02:45:05,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 02:45:05,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 02:45:05,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 02:45:05,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 02:45:05,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 02:45:05,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 02:45:05,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 02:45:05,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 02:45:05,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 02:45:05,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 02:45:05,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 02:45:05,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 02:45:05,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 02:45:05,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 02:45:05,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 02:45:05,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 02:45:05,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 02:45:05,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 02:45:05,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 02:45:05,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 02:45:05,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 02:45:05,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 02:45:05,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 02:45:05,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 02:45:05,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 02:45:05,747 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 02:45:05,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 02:45:05,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 02:45:05,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 02:45:05,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 02:45:05,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 02:45:05,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 02:45:05,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 02:45:05,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 02:45:05,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 02:45:05,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 02:45:05,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 02:45:05,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 02:45:05,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:05,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 02:45:05,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 02:45:05,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 02:45:05,751 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 02:45:05,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 02:45:05,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 02:45:05,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 02:45:05,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 02:45:05,752 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdc5a1717dfd5e838e2925a531ca4d85547079ab [2020-10-20 02:45:06,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 02:45:06,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 02:45:06,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 02:45:06,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 02:45:06,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 02:45:06,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2020-10-20 02:45:06,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4975e069/260cd8ac7a1041429e27e5e12a721be0/FLAGae7012477 [2020-10-20 02:45:06,795 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 02:45:06,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2020-10-20 02:45:06,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4975e069/260cd8ac7a1041429e27e5e12a721be0/FLAGae7012477 [2020-10-20 02:45:07,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4975e069/260cd8ac7a1041429e27e5e12a721be0 [2020-10-20 02:45:07,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 02:45:07,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 02:45:07,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:07,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 02:45:07,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 02:45:07,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:07" (1/1) ... [2020-10-20 02:45:07,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b1375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:07, skipping insertion in model container [2020-10-20 02:45:07,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 02:45:07" (1/1) ... [2020-10-20 02:45:07,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 02:45:07,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 02:45:07,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:07,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 02:45:07,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 02:45:08,020 INFO L208 MainTranslator]: Completed translation [2020-10-20 02:45:08,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08 WrapperNode [2020-10-20 02:45:08,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 02:45:08,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:08,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 02:45:08,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 02:45:08,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 02:45:08,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 02:45:08,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 02:45:08,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 02:45:08,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... [2020-10-20 02:45:08,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 02:45:08,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 02:45:08,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 02:45:08,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 02:45:08,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 02:45:08,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 02:45:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-20 02:45:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-20 02:45:08,201 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-20 02:45:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-20 02:45:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 02:45:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 02:45:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 02:45:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 02:45:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2020-10-20 02:45:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 02:45:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 02:45:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 02:45:08,205 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 02:45:08,757 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 02:45:08,758 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-10-20 02:45:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:08 BoogieIcfgContainer [2020-10-20 02:45:08,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 02:45:08,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 02:45:08,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 02:45:08,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 02:45:08,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 02:45:07" (1/3) ... [2020-10-20 02:45:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d4dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:08, skipping insertion in model container [2020-10-20 02:45:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 02:45:08" (2/3) ... [2020-10-20 02:45:08,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d4dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 02:45:08, skipping insertion in model container [2020-10-20 02:45:08,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 02:45:08" (3/3) ... [2020-10-20 02:45:08,768 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2020-10-20 02:45:08,780 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 02:45:08,781 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 02:45:08,789 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 02:45:08,790 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 02:45:08,840 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,842 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,847 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,848 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,848 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,848 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,848 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,849 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,849 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,850 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,850 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,853 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,853 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,853 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,854 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,854 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,854 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,855 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,855 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,856 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,856 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,856 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,857 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,858 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,858 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,859 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,859 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,860 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,860 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,861 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,861 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,862 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,862 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,862 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,862 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,863 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,863 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,863 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,864 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,864 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,864 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,864 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,864 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,865 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,865 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,865 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,866 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,867 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,867 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,867 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,868 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,868 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,869 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,869 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,869 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,870 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,870 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,871 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,873 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,873 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,874 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,874 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,874 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,875 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,876 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,876 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,877 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,878 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,878 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,879 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,879 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,880 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,880 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,881 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,882 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,883 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,884 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,885 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,885 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,886 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,889 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,890 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,890 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,890 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,891 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,891 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,891 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,892 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,893 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,893 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,893 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,902 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,904 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,904 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,905 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,905 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,905 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,905 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,906 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,906 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,906 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,906 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,910 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,911 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,911 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,912 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,912 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,912 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,912 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,915 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,915 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,917 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,917 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,918 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,925 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,925 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,926 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,927 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,927 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,927 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,927 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,928 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,928 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,928 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,929 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,929 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,929 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,929 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,930 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,930 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,943 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,943 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,943 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,943 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,943 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,944 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,945 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,945 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,945 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,946 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,946 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,946 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,947 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,947 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,947 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 02:45:08,961 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-20 02:45:08,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 02:45:09,002 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 02:45:09,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 02:45:09,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 02:45:09,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 02:45:09,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 02:45:09,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 02:45:09,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 02:45:09,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 02:45:09,019 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 02:45:09,022 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 149 transitions, 320 flow [2020-10-20 02:45:09,025 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 149 transitions, 320 flow [2020-10-20 02:45:09,027 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 142 places, 149 transitions, 320 flow [2020-10-20 02:45:09,114 INFO L129 PetriNetUnfolder]: 13/149 cut-off events. [2020-10-20 02:45:09,114 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-20 02:45:09,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 149 events. 13/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 373 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 112. Up to 3 conditions per place. [2020-10-20 02:45:09,129 INFO L117 LiptonReduction]: Number of co-enabled transitions 6410 [2020-10-20 02:45:11,074 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-20 02:45:12,099 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-20 02:45:12,234 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-20 02:45:13,376 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-20 02:45:13,730 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-20 02:45:14,702 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-20 02:45:15,402 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-20 02:45:17,441 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 142 [2020-10-20 02:45:18,897 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 136 [2020-10-20 02:45:18,966 INFO L132 LiptonReduction]: Checked pairs total: 11581 [2020-10-20 02:45:18,966 INFO L134 LiptonReduction]: Total number of compositions: 141 [2020-10-20 02:45:18,973 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 41 transitions, 104 flow [2020-10-20 02:45:19,000 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-10-20 02:45:19,002 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-10-20 02:45:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 02:45:19,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1262390740, now seen corresponding path program 1 times [2020-10-20 02:45:19,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:19,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240594305] [2020-10-20 02:45:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 02:45:19,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240594305] [2020-10-20 02:45:19,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 02:45:19,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210425243] [2020-10-20 02:45:19,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:19,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:19,248 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 4 states. [2020-10-20 02:45:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,387 INFO L93 Difference]: Finished difference Result 770 states and 1924 transitions. [2020-10-20 02:45:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 02:45:19,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 02:45:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,410 INFO L225 Difference]: With dead ends: 770 [2020-10-20 02:45:19,410 INFO L226 Difference]: Without dead ends: 710 [2020-10-20 02:45:19,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-20 02:45:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 501. [2020-10-20 02:45:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-20 02:45:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1344 transitions. [2020-10-20 02:45:19,508 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1344 transitions. Word has length 6 [2020-10-20 02:45:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,509 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 1344 transitions. [2020-10-20 02:45:19,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1344 transitions. [2020-10-20 02:45:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 02:45:19,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:19,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 02:45:19,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:19,726 INFO L82 PathProgramCache]: Analyzing trace with hash 316237771, now seen corresponding path program 1 times [2020-10-20 02:45:19,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:19,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075292773] [2020-10-20 02:45:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:19,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 02:45:19,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:19,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075292773] [2020-10-20 02:45:19,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:19,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 02:45:19,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346924521] [2020-10-20 02:45:19,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 02:45:19,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 02:45:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:19,861 INFO L87 Difference]: Start difference. First operand 501 states and 1344 transitions. Second operand 4 states. [2020-10-20 02:45:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:19,883 INFO L93 Difference]: Finished difference Result 563 states and 1505 transitions. [2020-10-20 02:45:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:19,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 02:45:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:19,888 INFO L225 Difference]: With dead ends: 563 [2020-10-20 02:45:19,888 INFO L226 Difference]: Without dead ends: 563 [2020-10-20 02:45:19,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 02:45:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-20 02:45:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-10-20 02:45:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-20 02:45:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1505 transitions. [2020-10-20 02:45:19,927 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1505 transitions. Word has length 10 [2020-10-20 02:45:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:19,927 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 1505 transitions. [2020-10-20 02:45:19,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 02:45:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1505 transitions. [2020-10-20 02:45:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 02:45:19,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:19,930 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:20,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 02:45:20,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2117508340, now seen corresponding path program 1 times [2020-10-20 02:45:20,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:20,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700199526] [2020-10-20 02:45:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:20,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 02:45:20,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:20,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:20,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700199526] [2020-10-20 02:45:20,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:20,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-20 02:45:20,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403047326] [2020-10-20 02:45:20,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 02:45:20,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:20,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 02:45:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 02:45:20,325 INFO L87 Difference]: Start difference. First operand 563 states and 1505 transitions. Second operand 8 states. [2020-10-20 02:45:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:20,662 INFO L93 Difference]: Finished difference Result 1549 states and 3897 transitions. [2020-10-20 02:45:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 02:45:20,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-20 02:45:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:20,677 INFO L225 Difference]: With dead ends: 1549 [2020-10-20 02:45:20,677 INFO L226 Difference]: Without dead ends: 1544 [2020-10-20 02:45:20,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-20 02:45:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-10-20 02:45:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1085. [2020-10-20 02:45:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-10-20 02:45:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 2923 transitions. [2020-10-20 02:45:20,743 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 2923 transitions. Word has length 13 [2020-10-20 02:45:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:20,744 INFO L481 AbstractCegarLoop]: Abstraction has 1085 states and 2923 transitions. [2020-10-20 02:45:20,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 02:45:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 2923 transitions. [2020-10-20 02:45:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 02:45:20,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:20,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:20,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 02:45:20,969 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash -689692045, now seen corresponding path program 1 times [2020-10-20 02:45:20,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:20,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232746152] [2020-10-20 02:45:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:21,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 02:45:21,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:21,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 02:45:21,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:21,118 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-20 02:45:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:21,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:21,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232746152] [2020-10-20 02:45:21,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:21,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 02:45:21,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719616374] [2020-10-20 02:45:21,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 02:45:21,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:21,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 02:45:21,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:21,138 INFO L87 Difference]: Start difference. First operand 1085 states and 2923 transitions. Second operand 3 states. [2020-10-20 02:45:21,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:21,211 INFO L93 Difference]: Finished difference Result 499 states and 1129 transitions. [2020-10-20 02:45:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 02:45:21,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-20 02:45:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:21,215 INFO L225 Difference]: With dead ends: 499 [2020-10-20 02:45:21,216 INFO L226 Difference]: Without dead ends: 493 [2020-10-20 02:45:21,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 02:45:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-20 02:45:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 435. [2020-10-20 02:45:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-20 02:45:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 973 transitions. [2020-10-20 02:45:21,244 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 973 transitions. Word has length 20 [2020-10-20 02:45:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:21,247 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 973 transitions. [2020-10-20 02:45:21,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 02:45:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 973 transitions. [2020-10-20 02:45:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 02:45:21,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:21,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:21,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 02:45:21,462 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1731070885, now seen corresponding path program 1 times [2020-10-20 02:45:21,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:21,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569248814] [2020-10-20 02:45:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:21,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 02:45:21,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:21,665 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 02:45:21,666 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,676 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:21,677 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,677 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2020-10-20 02:45:21,948 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-20 02:45:21,949 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:21,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 02:45:21,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-20 02:45:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:21,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:22,586 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2020-10-20 02:45:22,587 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-20 02:45:22,632 INFO L625 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2020-10-20 02:45:22,633 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-20 02:45:22,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2020-10-20 02:45:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:22,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569248814] [2020-10-20 02:45:22,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:22,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 26 [2020-10-20 02:45:22,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518739715] [2020-10-20 02:45:22,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-20 02:45:22,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-20 02:45:22,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-20 02:45:22,895 INFO L87 Difference]: Start difference. First operand 435 states and 973 transitions. Second operand 27 states. [2020-10-20 02:45:32,588 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-20 02:45:33,249 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-20 02:45:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:38,807 INFO L93 Difference]: Finished difference Result 1657 states and 3658 transitions. [2020-10-20 02:45:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-20 02:45:38,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 21 [2020-10-20 02:45:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:38,818 INFO L225 Difference]: With dead ends: 1657 [2020-10-20 02:45:38,819 INFO L226 Difference]: Without dead ends: 1551 [2020-10-20 02:45:38,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=891, Invalid=5751, Unknown=0, NotChecked=0, Total=6642 [2020-10-20 02:45:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2020-10-20 02:45:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 621. [2020-10-20 02:45:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-20 02:45:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1439 transitions. [2020-10-20 02:45:38,846 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1439 transitions. Word has length 21 [2020-10-20 02:45:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:38,847 INFO L481 AbstractCegarLoop]: Abstraction has 621 states and 1439 transitions. [2020-10-20 02:45:38,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-20 02:45:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1439 transitions. [2020-10-20 02:45:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 02:45:38,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:38,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:39,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 02:45:39,050 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 34948064, now seen corresponding path program 1 times [2020-10-20 02:45:39,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:39,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827644961] [2020-10-20 02:45:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:39,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 02:45:39,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:39,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:39,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827644961] [2020-10-20 02:45:39,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:39,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-20 02:45:39,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694930201] [2020-10-20 02:45:39,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 02:45:39,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:39,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 02:45:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-20 02:45:39,241 INFO L87 Difference]: Start difference. First operand 621 states and 1439 transitions. Second operand 12 states. [2020-10-20 02:45:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:39,556 INFO L93 Difference]: Finished difference Result 1343 states and 3034 transitions. [2020-10-20 02:45:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 02:45:39,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-20 02:45:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:39,565 INFO L225 Difference]: With dead ends: 1343 [2020-10-20 02:45:39,565 INFO L226 Difference]: Without dead ends: 1336 [2020-10-20 02:45:39,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-20 02:45:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-10-20 02:45:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 622. [2020-10-20 02:45:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-20 02:45:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1431 transitions. [2020-10-20 02:45:39,602 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1431 transitions. Word has length 24 [2020-10-20 02:45:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:39,602 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 1431 transitions. [2020-10-20 02:45:39,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 02:45:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1431 transitions. [2020-10-20 02:45:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 02:45:39,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:39,604 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-20 02:45:39,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 02:45:39,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:39,821 INFO L82 PathProgramCache]: Analyzing trace with hash 67637772, now seen corresponding path program 2 times [2020-10-20 02:45:39,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:39,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046990578] [2020-10-20 02:45:39,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:39,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 02:45:39,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:39,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:45:39,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:39,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 02:45:40,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046990578] [2020-10-20 02:45:40,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:40,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-20 02:45:40,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666898001] [2020-10-20 02:45:40,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 02:45:40,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 02:45:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-20 02:45:40,098 INFO L87 Difference]: Start difference. First operand 622 states and 1431 transitions. Second operand 16 states. [2020-10-20 02:45:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:40,634 INFO L93 Difference]: Finished difference Result 1735 states and 3798 transitions. [2020-10-20 02:45:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 02:45:40,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-10-20 02:45:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:40,643 INFO L225 Difference]: With dead ends: 1735 [2020-10-20 02:45:40,643 INFO L226 Difference]: Without dead ends: 1721 [2020-10-20 02:45:40,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-20 02:45:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2020-10-20 02:45:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 979. [2020-10-20 02:45:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-20 02:45:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 2246 transitions. [2020-10-20 02:45:40,672 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 2246 transitions. Word has length 27 [2020-10-20 02:45:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:40,673 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 2246 transitions. [2020-10-20 02:45:40,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 02:45:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 2246 transitions. [2020-10-20 02:45:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 02:45:40,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:40,675 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:40,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 02:45:40,889 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:40,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1054824207, now seen corresponding path program 1 times [2020-10-20 02:45:40,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:40,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455589498] [2020-10-20 02:45:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 02:45:40,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 02:45:40,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:45:41,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 02:45:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 02:45:41,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455589498] [2020-10-20 02:45:41,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 02:45:41,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-20 02:45:41,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655082836] [2020-10-20 02:45:41,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 02:45:41,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 02:45:41,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 02:45:41,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-20 02:45:41,120 INFO L87 Difference]: Start difference. First operand 979 states and 2246 transitions. Second operand 14 states. [2020-10-20 02:45:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 02:45:41,628 INFO L93 Difference]: Finished difference Result 1791 states and 3937 transitions. [2020-10-20 02:45:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 02:45:41,633 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-20 02:45:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 02:45:41,642 INFO L225 Difference]: With dead ends: 1791 [2020-10-20 02:45:41,643 INFO L226 Difference]: Without dead ends: 1777 [2020-10-20 02:45:41,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2020-10-20 02:45:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2020-10-20 02:45:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1074. [2020-10-20 02:45:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-20 02:45:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2471 transitions. [2020-10-20 02:45:41,674 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2471 transitions. Word has length 31 [2020-10-20 02:45:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 02:45:41,675 INFO L481 AbstractCegarLoop]: Abstraction has 1074 states and 2471 transitions. [2020-10-20 02:45:41,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 02:45:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2471 transitions. [2020-10-20 02:45:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 02:45:41,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 02:45:41,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 02:45:41,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 02:45:41,892 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 02:45:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 02:45:41,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1688032285, now seen corresponding path program 2 times [2020-10-20 02:45:41,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 02:45:41,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764521768] [2020-10-20 02:45:41,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 02:45:42,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 02:45:42,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:42,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 02:45:42,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:42,116 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 02:45:42,117 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:42,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:42,131 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 02:45:42,132 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-10-20 02:45:42,219 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:42,219 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 58 [2020-10-20 02:45:42,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 02:45:42,224 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:42,261 INFO L625 ElimStorePlain]: treesize reduction 36, result has 37.9 percent of original size [2020-10-20 02:45:42,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 02:45:42,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:22 [2020-10-20 02:45:42,905 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 02:45:42,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2020-10-20 02:45:42,908 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-20 02:45:42,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764521768] [2020-10-20 02:45:42,910 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 02:45:42,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [904777350] [2020-10-20 02:45:42,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 02:45:43,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 02:45:43,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:43,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 02:45:43,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:43,235 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 504 treesize of output 496 [2020-10-20 02:45:43,238 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:43,410 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2020-10-20 02:45:43,412 INFO L625 ElimStorePlain]: treesize reduction 455, result has 6.6 percent of original size [2020-10-20 02:45:43,412 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 02:45:43,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355626172] [2020-10-20 02:45:43,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 02:45:43,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 02:45:43,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 02:45:43,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 02:45:43,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 02:45:43,576 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 103 [2020-10-20 02:45:43,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 02:45:43,660 INFO L625 ElimStorePlain]: treesize reduction 71, result has 31.1 percent of original size [2020-10-20 02:45:43,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 02:45:43,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 02:45:43,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 02:45:43,662 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 02:45:43,663 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 02:45:44,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 02:45:44,279 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: 0 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.petrinetlbe.PetriNetLargeBlockEncoding.translateExecution(PetriNetLargeBlockEncoding.java:203) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getRcfgProgramExecution(BasicCegarLoop.java:1162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 02:45:44,283 INFO L168 Benchmark]: Toolchain (without parser) took 37192.46 ms. Allocated memory was 41.4 MB in the beginning and 110.1 MB in the end (delta: 68.7 MB). Free memory was 17.2 MB in the beginning and 24.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 61.4 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,284 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 922.87 ms. Allocated memory was 41.4 MB in the beginning and 47.2 MB in the end (delta: 5.8 MB). Free memory was 16.3 MB in the beginning and 15.8 MB in the end (delta: 555.9 kB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.01 ms. Allocated memory is still 47.2 MB. Free memory was 15.8 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,293 INFO L168 Benchmark]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 10.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,296 INFO L168 Benchmark]: RCFGBuilder took 627.88 ms. Allocated memory was 47.7 MB in the beginning and 49.8 MB in the end (delta: 2.1 MB). Free memory was 30.2 MB in the beginning and 14.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,296 INFO L168 Benchmark]: TraceAbstraction took 35519.64 ms. Allocated memory was 49.8 MB in the beginning and 110.1 MB in the end (delta: 60.3 MB). Free memory was 13.7 MB in the beginning and 24.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 14.3 GB. [2020-10-20 02:45:44,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 922.87 ms. Allocated memory was 41.4 MB in the beginning and 47.2 MB in the end (delta: 5.8 MB). Free memory was 16.3 MB in the beginning and 15.8 MB in the end (delta: 555.9 kB). Peak memory consumption was 9.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.01 ms. Allocated memory is still 47.2 MB. Free memory was 15.8 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 10.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 627.88 ms. Allocated memory was 47.7 MB in the beginning and 49.8 MB in the end (delta: 2.1 MB). Free memory was 30.2 MB in the beginning and 14.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 35519.64 ms. Allocated memory was 49.8 MB in the beginning and 110.1 MB in the end (delta: 60.3 MB). Free memory was 13.7 MB in the beginning and 24.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 49.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4580 VarBasedMoverChecksPositive, 89 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 71 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.9s, 340 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 9.9s, 142 PlacesBefore, 41 PlacesAfterwards, 149 TransitionsBefore, 41 TransitionsAfterwards, 6410 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 141 TotalNumberOfCompositions, 11581 MoverChecksTotal - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: 0: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.petrinetlbe.PetriNetLargeBlockEncoding.translateExecution(PetriNetLargeBlockEncoding.java:203) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...