/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:56:35,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:56:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:56:35,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:56:35,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:56:35,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:56:35,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:56:35,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:56:35,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:56:35,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:56:35,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:56:35,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:56:35,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:56:35,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:56:35,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:56:35,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:56:35,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:56:35,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:56:35,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:56:35,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:56:35,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:56:35,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:56:35,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:56:35,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:56:35,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:56:35,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:56:35,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:56:35,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:56:35,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:56:35,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:56:35,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:56:35,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:56:35,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:56:35,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:56:35,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:56:35,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:56:35,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:56:35,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:56:35,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:56:35,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:56:35,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:56:35,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:56:35,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:56:35,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:56:35,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:56:35,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:56:35,623 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:56:35,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:56:35,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:56:35,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:56:35,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:56:35,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:56:35,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:56:35,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:56:35,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:56:35,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:56:35,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:56:35,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:56:35,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:56:35,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:56:35,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:56:35,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:56:35,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:56:35,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:56:35,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:56:35,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:56:35,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:56:35,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:56:35,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:56:35,630 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:56:35,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:56:35,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:56:35,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:56:35,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:56:35,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:56:35,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:56:35,934 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:56:35,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-04-18 02:56:35,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1748f1c/0ce8dc3823e3467e8b477d7564d7414a/FLAG73775c3f4 [2020-04-18 02:56:36,542 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:56:36,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-04-18 02:56:36,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1748f1c/0ce8dc3823e3467e8b477d7564d7414a/FLAG73775c3f4 [2020-04-18 02:56:36,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1748f1c/0ce8dc3823e3467e8b477d7564d7414a [2020-04-18 02:56:36,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:56:36,868 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:56:36,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:56:36,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:56:36,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:56:36,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:36" (1/1) ... [2020-04-18 02:56:36,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:36, skipping insertion in model container [2020-04-18 02:56:36,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:36" (1/1) ... [2020-04-18 02:56:36,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:56:36,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:56:37,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:56:37,517 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:56:37,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:56:37,678 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:56:37,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37 WrapperNode [2020-04-18 02:56:37,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:56:37,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:56:37,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:56:37,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:56:37,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:56:37,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:56:37,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:56:37,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:56:37,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:56:37,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:56:37,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:56:37,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:56:37,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (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 [2020-04-18 02:56:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:56:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:56:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:56:37,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:56:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:56:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:56:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:56:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:56:37,833 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:56:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:56:37,834 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:56:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:56:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:56:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:56:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:56:37,837 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:56:38,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:56:38,293 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:56:38,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:38 BoogieIcfgContainer [2020-04-18 02:56:38,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:56:38,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:56:38,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:56:38,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:56:38,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:56:36" (1/3) ... [2020-04-18 02:56:38,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4902cddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:38, skipping insertion in model container [2020-04-18 02:56:38,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37" (2/3) ... [2020-04-18 02:56:38,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4902cddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:38, skipping insertion in model container [2020-04-18 02:56:38,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:38" (3/3) ... [2020-04-18 02:56:38,307 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-04-18 02:56:38,318 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:56:38,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:56:38,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:56:38,327 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:56:38,366 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,367 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,368 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,368 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,369 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,369 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,370 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,370 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,370 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,371 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,373 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,373 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,374 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,375 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,376 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,376 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,376 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,376 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,379 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,380 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,386 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,386 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,386 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,386 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,392 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,392 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,392 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,393 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,395 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,395 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,396 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,396 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,399 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,399 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,399 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,400 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:56:38,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:56:38,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:56:38,439 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:56:38,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:56:38,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:56:38,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:56:38,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:56:38,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:56:38,456 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,458 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,506 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:56:38,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:56:38,513 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:56:38,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,544 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:56:38,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:56:38,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:56:38,548 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 02:56:38,550 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:56:40,177 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 02:56:40,242 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 02:56:40,242 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 02:56:40,246 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 02:56:40,365 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 02:56:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 02:56:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:56:40,389 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:40,390 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:40,391 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 02:56:40,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:40,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331149637] [2020-04-18 02:56:40,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:40,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331149637] [2020-04-18 02:56:40,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:40,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:40,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157658398] [2020-04-18 02:56:40,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:56:40,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:40,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:56:40,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:56:40,667 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 02:56:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:40,768 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 02:56:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:56:40,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:56:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:40,837 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 02:56:40,837 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 02:56:40,838 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:56:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 02:56:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 02:56:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 02:56:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 02:56:41,000 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 02:56:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,005 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 02:56:41,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:56:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 02:56:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:56:41,020 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,021 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 02:56:41,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793320310] [2020-04-18 02:56:41,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793320310] [2020-04-18 02:56:41,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148327446] [2020-04-18 02:56:41,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,222 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 02:56:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,314 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 02:56:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:56:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,325 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 02:56:41,325 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 02:56:41,327 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 02:56:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 02:56:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 02:56:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 02:56:41,372 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 02:56:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,373 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 02:56:41,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 02:56:41,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:56:41,375 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,375 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-04-18 02:56:41,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549241822] [2020-04-18 02:56:41,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549241822] [2020-04-18 02:56:41,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213379843] [2020-04-18 02:56:41,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,511 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-18 02:56:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,555 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 02:56:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:56:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,564 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 02:56:41,565 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 02:56:41,565 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 02:56:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 02:56:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 02:56:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 02:56:41,611 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 02:56:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,612 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 02:56:41,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 02:56:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:56:41,614 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,614 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,615 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-04-18 02:56:41,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761829720] [2020-04-18 02:56:41,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761829720] [2020-04-18 02:56:41,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193481121] [2020-04-18 02:56:41,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,721 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-18 02:56:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,764 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 02:56:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:56:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,771 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 02:56:41,771 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 02:56:41,772 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 02:56:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 02:56:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 02:56:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 02:56:41,808 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 02:56:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,809 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 02:56:41,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 02:56:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:56:41,810 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,811 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash 517018401, now seen corresponding path program 1 times [2020-04-18 02:56:41,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908735862] [2020-04-18 02:56:41,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908735862] [2020-04-18 02:56:41,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:41,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076185218] [2020-04-18 02:56:41,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:41,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,886 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 5 states. [2020-04-18 02:56:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,955 INFO L93 Difference]: Finished difference Result 1090 states and 3695 transitions. [2020-04-18 02:56:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:41,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:56:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,960 INFO L225 Difference]: With dead ends: 1090 [2020-04-18 02:56:41,960 INFO L226 Difference]: Without dead ends: 472 [2020-04-18 02:56:41,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-18 02:56:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-18 02:56:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-18 02:56:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-18 02:56:41,981 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 14 [2020-04-18 02:56:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,982 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-18 02:56:41,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:41,982 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-18 02:56:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:56:41,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,985 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-18 02:56:41,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945223329] [2020-04-18 02:56:41,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945223329] [2020-04-18 02:56:42,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875576772] [2020-04-18 02:56:42,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,063 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-04-18 02:56:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,115 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-04-18 02:56:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:56:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,118 INFO L225 Difference]: With dead ends: 586 [2020-04-18 02:56:42,118 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 02:56:42,119 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 02:56:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 02:56:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 02:56:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-04-18 02:56:42,128 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-04-18 02:56:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,128 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-04-18 02:56:42,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-04-18 02:56:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:56:42,129 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,130 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash 704255862, now seen corresponding path program 1 times [2020-04-18 02:56:42,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543390782] [2020-04-18 02:56:42,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543390782] [2020-04-18 02:56:42,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889227521] [2020-04-18 02:56:42,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,211 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-04-18 02:56:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,270 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-04-18 02:56:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 02:56:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,272 INFO L225 Difference]: With dead ends: 358 [2020-04-18 02:56:42,272 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 02:56:42,273 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 02:56:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 02:56:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 02:56:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-04-18 02:56:42,279 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-04-18 02:56:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,279 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-04-18 02:56:42,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-04-18 02:56:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:56:42,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,280 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,280 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-04-18 02:56:42,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141312981] [2020-04-18 02:56:42,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141312981] [2020-04-18 02:56:42,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203947070] [2020-04-18 02:56:42,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,389 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-04-18 02:56:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,429 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-04-18 02:56:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:56:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,430 INFO L225 Difference]: With dead ends: 130 [2020-04-18 02:56:42,430 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:56:42,431 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:56:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:56:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:56:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:56:42,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:56:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,432 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:56:42,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:56:42,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:56:42,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:56:42 BasicIcfg [2020-04-18 02:56:42,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:56:42,444 INFO L168 Benchmark]: Toolchain (without parser) took 5590.90 ms. Allocated memory was 146.3 MB in the beginning and 286.8 MB in the end (delta: 140.5 MB). Free memory was 101.8 MB in the beginning and 221.1 MB in the end (delta: -119.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,446 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.39 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,448 INFO L168 Benchmark]: Boogie Preprocessor took 28.36 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,453 INFO L168 Benchmark]: RCFGBuilder took 538.65 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 130.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,454 INFO L168 Benchmark]: TraceAbstraction took 4142.73 ms. Allocated memory was 203.9 MB in the beginning and 286.8 MB in the end (delta: 82.8 MB). Free memory was 130.1 MB in the beginning and 221.1 MB in the end (delta: -90.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:56:42,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 809.39 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.36 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 155.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 538.65 ms. Allocated memory is still 203.9 MB. Free memory was 155.1 MB in the beginning and 130.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4142.73 ms. Allocated memory was 203.9 MB in the beginning and 286.8 MB in the end (delta: 82.8 MB). Free memory was 130.1 MB in the beginning and 221.1 MB in the end (delta: -90.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 233 SDtfs, 258 SDslu, 315 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 4087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...