/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-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:46:29,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:46:29,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:46:29,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:46:29,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:46:29,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:46:29,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:46:29,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:46:29,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:46:29,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:46:29,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:46:29,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:46:29,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:46:29,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:46:29,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:46:29,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:46:29,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:46:29,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:46:29,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:46:29,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:46:29,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:46:29,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:46:29,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:46:29,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:46:29,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:46:29,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:46:29,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:46:29,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:46:29,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:46:29,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:46:29,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:46:29,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:46:29,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:46:29,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:46:29,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:46:29,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:46:29,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:46:29,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:46:29,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:46:29,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:46:29,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:46:29,733 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-NoLbe.epf [2020-04-18 06:46:29,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:46:29,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:46:29,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:46:29,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:46:29,760 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:46:29,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:46:29,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:46:29,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:46:29,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:46:29,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:46:29,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:46:29,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:46:29,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:46:29,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:46:29,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:46:29,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:46:29,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:46:29,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:46:29,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:46:29,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:46:29,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:46:29,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:46:29,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:46:29,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:46:29,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:46:30,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:46:30,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:46:30,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:46:30,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:46:30,087 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:46:30,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-04-18 06:46:30,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f6d8a1/a050525ea50b4334898a69eaa9f1911c/FLAGb44bb65b2 [2020-04-18 06:46:30,680 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:46:30,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-04-18 06:46:30,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f6d8a1/a050525ea50b4334898a69eaa9f1911c/FLAGb44bb65b2 [2020-04-18 06:46:30,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f6d8a1/a050525ea50b4334898a69eaa9f1911c [2020-04-18 06:46:30,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:46:30,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:46:31,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:46:31,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:46:31,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:46:31,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:46:30" (1/1) ... [2020-04-18 06:46:31,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1db9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31, skipping insertion in model container [2020-04-18 06:46:31,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:46:30" (1/1) ... [2020-04-18 06:46:31,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:46:31,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:46:31,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:46:31,554 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:46:31,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:46:31,688 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:46:31,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31 WrapperNode [2020-04-18 06:46:31,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:46:31,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:46:31,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:46:31,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:46:31,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:46:31,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:46:31,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:46:31,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:46:31,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (1/1) ... [2020-04-18 06:46:31,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:46:31,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:46:31,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:46:31,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:46:31,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (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 06:46:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:46:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:46:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:46:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:46:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:46:31,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:46:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:46:31,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:46:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:46:31,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:46:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:46:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:46:31,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:46:31,846 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 06:46:32,251 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:46:32,252 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:46:32,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:46:32 BoogieIcfgContainer [2020-04-18 06:46:32,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:46:32,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:46:32,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:46:32,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:46:32,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:46:30" (1/3) ... [2020-04-18 06:46:32,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b24cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:46:32, skipping insertion in model container [2020-04-18 06:46:32,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:46:31" (2/3) ... [2020-04-18 06:46:32,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b24cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:46:32, skipping insertion in model container [2020-04-18 06:46:32,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:46:32" (3/3) ... [2020-04-18 06:46:32,274 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-04-18 06:46:32,283 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:46:32,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:46:32,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:46:32,292 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:46:32,320 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,321 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,321 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,321 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,322 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,322 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,323 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,323 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,323 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,324 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,324 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,324 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,325 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,325 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,325 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,326 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,326 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,326 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,331 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,331 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,332 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,332 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,339 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,340 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,340 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,340 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,344 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,344 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:46:32,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:46:32,382 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:46:32,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:46:32,383 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:46:32,383 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:46:32,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:46:32,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:46:32,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:46:32,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:46:32,408 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 06:46:32,897 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7267 states. [2020-04-18 06:46:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states. [2020-04-18 06:46:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 06:46:32,935 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:32,936 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:32,936 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -42514807, now seen corresponding path program 1 times [2020-04-18 06:46:32,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:32,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429813141] [2020-04-18 06:46:32,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:33,526 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 06:46:33,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429813141] [2020-04-18 06:46:33,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:33,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:46:33,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357474529] [2020-04-18 06:46:33,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:46:33,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:33,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:46:33,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:46:33,553 INFO L87 Difference]: Start difference. First operand 7267 states. Second operand 6 states. [2020-04-18 06:46:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:34,067 INFO L93 Difference]: Finished difference Result 15559 states and 53305 transitions. [2020-04-18 06:46:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:46:34,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 06:46:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:34,137 INFO L225 Difference]: With dead ends: 15559 [2020-04-18 06:46:34,137 INFO L226 Difference]: Without dead ends: 4777 [2020-04-18 06:46:34,139 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-04-18 06:46:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4057. [2020-04-18 06:46:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-04-18 06:46:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 13594 transitions. [2020-04-18 06:46:34,430 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 13594 transitions. Word has length 35 [2020-04-18 06:46:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:34,432 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 13594 transitions. [2020-04-18 06:46:34,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:46:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 13594 transitions. [2020-04-18 06:46:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 06:46:34,446 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:34,446 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:34,447 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:34,448 INFO L82 PathProgramCache]: Analyzing trace with hash 638524266, now seen corresponding path program 1 times [2020-04-18 06:46:34,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:34,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753466918] [2020-04-18 06:46:34,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:34,669 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 06:46:34,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753466918] [2020-04-18 06:46:34,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:34,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:34,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030983943] [2020-04-18 06:46:34,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:34,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:34,681 INFO L87 Difference]: Start difference. First operand 4057 states and 13594 transitions. Second operand 7 states. [2020-04-18 06:46:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:35,081 INFO L93 Difference]: Finished difference Result 5737 states and 18888 transitions. [2020-04-18 06:46:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:46:35,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 06:46:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:35,115 INFO L225 Difference]: With dead ends: 5737 [2020-04-18 06:46:35,115 INFO L226 Difference]: Without dead ends: 4417 [2020-04-18 06:46:35,116 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2020-04-18 06:46:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3697. [2020-04-18 06:46:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3697 states. [2020-04-18 06:46:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 12334 transitions. [2020-04-18 06:46:35,266 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 12334 transitions. Word has length 37 [2020-04-18 06:46:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:35,267 INFO L479 AbstractCegarLoop]: Abstraction has 3697 states and 12334 transitions. [2020-04-18 06:46:35,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 12334 transitions. [2020-04-18 06:46:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 06:46:35,277 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:35,277 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:35,278 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:35,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:35,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1941266888, now seen corresponding path program 1 times [2020-04-18 06:46:35,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:35,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989964657] [2020-04-18 06:46:35,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:35,444 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 06:46:35,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989964657] [2020-04-18 06:46:35,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:35,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:46:35,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396754151] [2020-04-18 06:46:35,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:46:35,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:35,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:46:35,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:46:35,447 INFO L87 Difference]: Start difference. First operand 3697 states and 12334 transitions. Second operand 6 states. [2020-04-18 06:46:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:35,669 INFO L93 Difference]: Finished difference Result 4177 states and 13808 transitions. [2020-04-18 06:46:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:46:35,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 06:46:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:35,695 INFO L225 Difference]: With dead ends: 4177 [2020-04-18 06:46:35,695 INFO L226 Difference]: Without dead ends: 3337 [2020-04-18 06:46:35,696 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2020-04-18 06:46:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3337. [2020-04-18 06:46:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3337 states. [2020-04-18 06:46:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 11026 transitions. [2020-04-18 06:46:35,809 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 11026 transitions. Word has length 37 [2020-04-18 06:46:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:35,810 INFO L479 AbstractCegarLoop]: Abstraction has 3337 states and 11026 transitions. [2020-04-18 06:46:35,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:46:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 11026 transitions. [2020-04-18 06:46:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 06:46:35,819 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:35,819 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:35,819 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash -710180247, now seen corresponding path program 1 times [2020-04-18 06:46:35,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:35,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998563380] [2020-04-18 06:46:35,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:35,965 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 06:46:35,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998563380] [2020-04-18 06:46:35,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:35,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:46:35,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618435988] [2020-04-18 06:46:35,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:46:35,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:35,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:46:35,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:46:35,970 INFO L87 Difference]: Start difference. First operand 3337 states and 11026 transitions. Second operand 8 states. [2020-04-18 06:46:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:36,211 INFO L93 Difference]: Finished difference Result 5209 states and 16973 transitions. [2020-04-18 06:46:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:46:36,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 06:46:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:36,250 INFO L225 Difference]: With dead ends: 5209 [2020-04-18 06:46:36,250 INFO L226 Difference]: Without dead ends: 2971 [2020-04-18 06:46:36,251 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-04-18 06:46:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2491. [2020-04-18 06:46:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-04-18 06:46:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 7980 transitions. [2020-04-18 06:46:36,332 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 7980 transitions. Word has length 39 [2020-04-18 06:46:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:36,334 INFO L479 AbstractCegarLoop]: Abstraction has 2491 states and 7980 transitions. [2020-04-18 06:46:36,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:46:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 7980 transitions. [2020-04-18 06:46:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 06:46:36,341 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:36,341 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:36,341 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:36,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:36,342 INFO L82 PathProgramCache]: Analyzing trace with hash 313649386, now seen corresponding path program 1 times [2020-04-18 06:46:36,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:36,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926102711] [2020-04-18 06:46:36,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:36,483 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 06:46:36,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926102711] [2020-04-18 06:46:36,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:36,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:46:36,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073619877] [2020-04-18 06:46:36,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:46:36,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:46:36,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:46:36,486 INFO L87 Difference]: Start difference. First operand 2491 states and 7980 transitions. Second operand 6 states. [2020-04-18 06:46:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:36,720 INFO L93 Difference]: Finished difference Result 3262 states and 10314 transitions. [2020-04-18 06:46:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:46:36,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-04-18 06:46:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:36,730 INFO L225 Difference]: With dead ends: 3262 [2020-04-18 06:46:36,731 INFO L226 Difference]: Without dead ends: 2302 [2020-04-18 06:46:36,731 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-04-18 06:46:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2020-04-18 06:46:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-04-18 06:46:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 7269 transitions. [2020-04-18 06:46:36,802 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 7269 transitions. Word has length 41 [2020-04-18 06:46:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:36,804 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 7269 transitions. [2020-04-18 06:46:36,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:46:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 7269 transitions. [2020-04-18 06:46:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 06:46:36,810 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:36,810 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:36,815 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:36,817 INFO L82 PathProgramCache]: Analyzing trace with hash -198753646, now seen corresponding path program 1 times [2020-04-18 06:46:36,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:36,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175427239] [2020-04-18 06:46:36,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:37,015 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 06:46:37,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175427239] [2020-04-18 06:46:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:37,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:37,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442490273] [2020-04-18 06:46:37,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:37,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:37,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:37,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:37,017 INFO L87 Difference]: Start difference. First operand 2302 states and 7269 transitions. Second operand 7 states. [2020-04-18 06:46:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:37,160 INFO L93 Difference]: Finished difference Result 2536 states and 7794 transitions. [2020-04-18 06:46:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:46:37,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-04-18 06:46:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:37,166 INFO L225 Difference]: With dead ends: 2536 [2020-04-18 06:46:37,166 INFO L226 Difference]: Without dead ends: 1708 [2020-04-18 06:46:37,166 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:46:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-04-18 06:46:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1708. [2020-04-18 06:46:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-04-18 06:46:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 5151 transitions. [2020-04-18 06:46:37,208 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 5151 transitions. Word has length 42 [2020-04-18 06:46:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:37,208 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 5151 transitions. [2020-04-18 06:46:37,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 5151 transitions. [2020-04-18 06:46:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:46:37,213 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:37,213 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:37,214 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:37,214 INFO L82 PathProgramCache]: Analyzing trace with hash 130248879, now seen corresponding path program 1 times [2020-04-18 06:46:37,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:37,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158081621] [2020-04-18 06:46:37,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:37,315 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 06:46:37,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158081621] [2020-04-18 06:46:37,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:37,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:46:37,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820271517] [2020-04-18 06:46:37,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:46:37,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:37,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:46:37,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:46:37,317 INFO L87 Difference]: Start difference. First operand 1708 states and 5151 transitions. Second operand 8 states. [2020-04-18 06:46:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:37,467 INFO L93 Difference]: Finished difference Result 1456 states and 4257 transitions. [2020-04-18 06:46:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:46:37,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-04-18 06:46:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:37,470 INFO L225 Difference]: With dead ends: 1456 [2020-04-18 06:46:37,471 INFO L226 Difference]: Without dead ends: 748 [2020-04-18 06:46:37,471 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:46:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-04-18 06:46:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 716. [2020-04-18 06:46:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-04-18 06:46:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2020 transitions. [2020-04-18 06:46:37,488 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 2020 transitions. Word has length 44 [2020-04-18 06:46:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:37,488 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 2020 transitions. [2020-04-18 06:46:37,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:46:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 2020 transitions. [2020-04-18 06:46:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:46:37,491 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:46:37,491 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:46:37,491 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:46:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:46:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1664387346, now seen corresponding path program 1 times [2020-04-18 06:46:37,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:46:37,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193497169] [2020-04-18 06:46:37,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:46:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:46:37,590 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 06:46:37,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193497169] [2020-04-18 06:46:37,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:46:37,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:46:37,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050784541] [2020-04-18 06:46:37,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:46:37,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:46:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:46:37,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:46:37,593 INFO L87 Difference]: Start difference. First operand 716 states and 2020 transitions. Second operand 7 states. [2020-04-18 06:46:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:46:37,745 INFO L93 Difference]: Finished difference Result 694 states and 1954 transitions. [2020-04-18 06:46:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 06:46:37,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-04-18 06:46:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:46:37,746 INFO L225 Difference]: With dead ends: 694 [2020-04-18 06:46:37,746 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:46:37,747 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:46:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:46:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:46:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:46:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:46:37,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 06:46:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:46:37,748 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:46:37,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:46:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:46:37,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:46:37,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:46:37 BasicIcfg [2020-04-18 06:46:37,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:46:37,764 INFO L168 Benchmark]: Toolchain (without parser) took 6779.11 ms. Allocated memory was 145.2 MB in the beginning and 372.2 MB in the end (delta: 227.0 MB). Free memory was 102.2 MB in the beginning and 284.2 MB in the end (delta: -182.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,765 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.04 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 157.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,767 INFO L168 Benchmark]: Boogie Preprocessor took 34.86 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 154.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,771 INFO L168 Benchmark]: RCFGBuilder took 473.02 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 132.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,772 INFO L168 Benchmark]: TraceAbstraction took 5497.36 ms. Allocated memory was 202.9 MB in the beginning and 372.2 MB in the end (delta: 169.3 MB). Free memory was 131.3 MB in the beginning and 284.2 MB in the end (delta: -152.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-04-18 06:46:37,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.04 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 157.4 MB in the end (delta: -57.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.47 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.86 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 154.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.02 ms. Allocated memory is still 202.9 MB. Free memory was 154.0 MB in the beginning and 132.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5497.36 ms. Allocated memory was 202.9 MB in the beginning and 372.2 MB in the end (delta: 169.3 MB). Free memory was 131.3 MB in the beginning and 284.2 MB in the end (delta: -152.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 703 SDtfs, 1220 SDslu, 2284 SDs, 0 SdLazy, 343 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7267occurred 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: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1952 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 49725 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...