/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:20:01,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:20:01,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:20:01,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:20:01,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:20:01,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:20:01,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:20:01,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:20:01,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:20:01,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:20:01,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:20:01,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:20:01,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:20:01,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:20:01,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:20:01,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:20:01,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:20:01,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:20:01,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:20:01,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:20:01,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:20:01,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:20:01,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:20:01,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:20:01,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:20:01,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:20:01,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:20:01,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:20:01,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:20:01,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:20:01,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:20:01,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:20:01,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:20:01,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:20:01,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:20:01,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:20:01,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:20:01,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:20:01,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:20:01,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:20:01,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:20:01,714 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 02:20:01,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:20:01,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:20:01,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:20:01,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:20:01,744 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:20:01,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:20:01,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:20:01,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:20:01,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:20:01,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:20:01,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:20:01,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:20:01,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:20:01,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:20:01,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:20:01,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:20:01,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:20:01,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:20:01,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:20:01,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:20:01,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:20:01,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:20:01,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:20:01,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:20:01,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:20:01,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:20:01,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:20:01,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:20:01,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:20:01,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:20:02,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:20:02,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:20:02,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:20:02,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:20:02,062 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:20:02,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 02:20:02,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5f457e5/c91b073e462d4f80ae3e8095a06a406e/FLAGc33a8ee16 [2020-04-18 02:20:02,748 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:20:02,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 02:20:02,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5f457e5/c91b073e462d4f80ae3e8095a06a406e/FLAGc33a8ee16 [2020-04-18 02:20:03,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5f457e5/c91b073e462d4f80ae3e8095a06a406e [2020-04-18 02:20:03,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:20:03,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:20:03,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:20:03,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:20:03,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:20:03,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18164ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03, skipping insertion in model container [2020-04-18 02:20:03,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:20:03,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:20:03,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:20:03,647 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:20:03,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:20:03,791 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:20:03,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03 WrapperNode [2020-04-18 02:20:03,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:20:03,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:20:03,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:20:03,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:20:03,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:20:03,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:20:03,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:20:03,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:20:03,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (1/1) ... [2020-04-18 02:20:03,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:20:03,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:20:03,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:20:03,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:20:03,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (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 02:20:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:20:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:20:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:20:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:20:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:20:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:20:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:20:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:20:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:20:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:20:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:20:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:20:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:20:03,951 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 02:20:04,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:20:04,345 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:20:04,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:20:04 BoogieIcfgContainer [2020-04-18 02:20:04,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:20:04,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:20:04,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:20:04,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:20:04,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:20:03" (1/3) ... [2020-04-18 02:20:04,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a852530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:20:04, skipping insertion in model container [2020-04-18 02:20:04,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:20:03" (2/3) ... [2020-04-18 02:20:04,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a852530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:20:04, skipping insertion in model container [2020-04-18 02:20:04,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:20:04" (3/3) ... [2020-04-18 02:20:04,360 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-04-18 02:20:04,370 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:20:04,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:20:04,377 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:20:04,378 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:20:04,417 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,417 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,418 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,419 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,419 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,419 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,421 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,421 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,422 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,423 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,423 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,423 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,425 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,426 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,426 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,426 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,427 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,427 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,434 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,434 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,434 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,435 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,444 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,444 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,444 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,444 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,447 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,448 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:20:04,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:20:04,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:20:04,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:20:04,484 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:20:04,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:20:04,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:20:04,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:20:04,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:20:04,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:20:04,500 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 02:20:04,503 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:20:04,553 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:20:04,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:20:04,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:20:04,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:20:04,583 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:20:04,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:20:04,584 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:20:04,587 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:20:04,588 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:20:05,923 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 02:20:06,047 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 02:20:06,047 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:20:06,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:20:06,102 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:20:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:20:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:20:06,119 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:06,120 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:06,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 02:20:06,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:06,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860747847] [2020-04-18 02:20:06,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:06,466 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 02:20:06,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860747847] [2020-04-18 02:20:06,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:06,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:20:06,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507651439] [2020-04-18 02:20:06,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:20:06,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:06,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:20:06,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:20:06,496 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:20:06,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:06,535 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:20:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:20:06,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:20:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:06,568 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:20:06,568 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:20:06,569 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 02:20:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:20:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:20:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:20:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:20:06,641 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:20:06,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:06,643 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:20:06,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:20:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:20:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:20:06,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:06,645 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:06,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:06,645 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 02:20:06,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:06,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819822997] [2020-04-18 02:20:06,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:06,814 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 02:20:06,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819822997] [2020-04-18 02:20:06,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:06,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:20:06,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655056793] [2020-04-18 02:20:06,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:20:06,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:06,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:20:06,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:20:06,819 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:20:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:06,852 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:20:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:20:06,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:20:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:06,856 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:20:06,856 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:20:06,857 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 02:20:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:20:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:20:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:20:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:20:06,885 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:20:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:06,886 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:20:06,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:20:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:20:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:20:06,888 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:06,888 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:06,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-18 02:20:06,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:06,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293404738] [2020-04-18 02:20:06,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:06,957 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 02:20:06,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293404738] [2020-04-18 02:20:06,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:06,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:20:06,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298798227] [2020-04-18 02:20:06,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:20:06,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:06,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:20:06,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:20:06,960 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 02:20:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:06,988 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-18 02:20:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:20:06,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:20:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:06,991 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:20:06,992 INFO L226 Difference]: Without dead ends: 242 [2020-04-18 02:20:06,992 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 02:20:06,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-18 02:20:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-18 02:20:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 02:20:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-18 02:20:07,007 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-18 02:20:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,007 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-18 02:20:07,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:20:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-18 02:20:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:20:07,009 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,009 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:07,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-18 02:20:07,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854778731] [2020-04-18 02:20:07,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,083 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 02:20:07,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854778731] [2020-04-18 02:20:07,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:20:07,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863817866] [2020-04-18 02:20:07,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:20:07,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:20:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:20:07,089 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-18 02:20:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,142 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-04-18 02:20:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:20:07,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:20:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,144 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:20:07,145 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:20:07,145 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 02:20:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:20:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:20:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:20:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 02:20:07,152 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-04-18 02:20:07,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,152 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 02:20:07,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:20:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 02:20:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:20:07,154 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,154 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:07,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 02:20:07,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439123479] [2020-04-18 02:20:07,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,235 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 02:20:07,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439123479] [2020-04-18 02:20:07,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:20:07,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115716282] [2020-04-18 02:20:07,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:20:07,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:20:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:20:07,238 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-04-18 02:20:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,297 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-04-18 02:20:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:20:07,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:20:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,299 INFO L225 Difference]: With dead ends: 176 [2020-04-18 02:20:07,299 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:20:07,299 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 02:20:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:20:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:20:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:20:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 02:20:07,304 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-04-18 02:20:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,304 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 02:20:07,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:20:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 02:20:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:20:07,305 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,305 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:07,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 02:20:07,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786905006] [2020-04-18 02:20:07,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,374 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 02:20:07,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786905006] [2020-04-18 02:20:07,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:20:07,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429006907] [2020-04-18 02:20:07,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:20:07,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:20:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:20:07,378 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-04-18 02:20:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,423 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-04-18 02:20:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:20:07,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:20:07,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,425 INFO L225 Difference]: With dead ends: 91 [2020-04-18 02:20:07,425 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 02:20:07,425 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:20:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 02:20:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 02:20:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 02:20:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-04-18 02:20:07,428 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-04-18 02:20:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,428 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-04-18 02:20:07,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:20:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-04-18 02:20:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:20:07,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,429 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:07,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,430 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-04-18 02:20:07,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767250803] [2020-04-18 02:20:07,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,509 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 02:20:07,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767250803] [2020-04-18 02:20:07,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:20:07,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298387637] [2020-04-18 02:20:07,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:20:07,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:20:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:20:07,512 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-04-18 02:20:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,561 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-04-18 02:20:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:20:07,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-18 02:20:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,563 INFO L225 Difference]: With dead ends: 65 [2020-04-18 02:20:07,563 INFO L226 Difference]: Without dead ends: 50 [2020-04-18 02:20:07,564 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:20:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-04-18 02:20:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-04-18 02:20:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-04-18 02:20:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-04-18 02:20:07,567 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-04-18 02:20:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,568 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-04-18 02:20:07,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:20:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-04-18 02:20:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:20:07,569 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,569 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:20:07,569 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-04-18 02:20:07,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22077700] [2020-04-18 02:20:07,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,658 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 02:20:07,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22077700] [2020-04-18 02:20:07,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:20:07,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157561161] [2020-04-18 02:20:07,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:20:07,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:20:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:20:07,661 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-04-18 02:20:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,741 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-04-18 02:20:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:20:07,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-18 02:20:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,743 INFO L225 Difference]: With dead ends: 43 [2020-04-18 02:20:07,743 INFO L226 Difference]: Without dead ends: 37 [2020-04-18 02:20:07,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:20:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-04-18 02:20:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-04-18 02:20:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-04-18 02:20:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-04-18 02:20:07,745 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-04-18 02:20:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,746 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-04-18 02:20:07,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:20:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-04-18 02:20:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:20:07,747 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:20:07,747 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 02:20:07,747 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:20:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:20:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-04-18 02:20:07,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:20:07,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144701606] [2020-04-18 02:20:07,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:20:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:20:07,849 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 02:20:07,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144701606] [2020-04-18 02:20:07,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:20:07,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:20:07,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231311055] [2020-04-18 02:20:07,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:20:07,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:20:07,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:20:07,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:20:07,854 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-04-18 02:20:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:20:07,878 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-04-18 02:20:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:20:07,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:20:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:20:07,879 INFO L225 Difference]: With dead ends: 36 [2020-04-18 02:20:07,879 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:20:07,880 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:20:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:20:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:20:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:20:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:20:07,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:20:07,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:20:07,881 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:20:07,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:20:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:20:07,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:20:07,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:20:07 BasicIcfg [2020-04-18 02:20:07,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:20:07,889 INFO L168 Benchmark]: Toolchain (without parser) took 4866.24 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 101.3 MB in the beginning and 196.4 MB in the end (delta: -95.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,890 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.30 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 99.3 MB in the beginning and 159.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.46 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 156.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,897 INFO L168 Benchmark]: Boogie Preprocessor took 28.24 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,898 INFO L168 Benchmark]: RCFGBuilder took 478.68 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:20:07,899 INFO L168 Benchmark]: TraceAbstraction took 3534.68 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.7 MB in the beginning and 196.4 MB in the end (delta: -63.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:20:07,910 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.30 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 99.3 MB in the beginning and 159.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.46 ms. Allocated memory is still 202.4 MB. Free memory was 159.5 MB in the beginning and 156.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.24 ms. Allocated memory is still 202.4 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.68 ms. Allocated memory is still 202.4 MB. Free memory was 155.4 MB in the beginning and 133.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3534.68 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 132.7 MB in the beginning and 196.4 MB in the end (delta: -63.8 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: 1.5s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 678 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 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 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 188 SDtfs, 183 SDslu, 268 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 3871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...